Merge branch 'v5.4' into v5.4

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clairblacketer 2021-08-18 13:52:15 -04:00 committed by GitHub
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cdmTableName,cdmFieldName,isRequired,cdmDatatype,userGuidance,etlConventions,isPrimaryKey,isForeignKey,fkTableName,fkFieldName,fkDomain,fkClass,unique DQ identifiers
PERSON,person_id,Yes,integer,It is assumed that every person with a different unique identifier is in fact a different person and should be treated independently.,"Any person linkage that needs to occur to uniquely identify Persons ought to be done prior to writing this table. This identifier can be the original id from the source data provided if it is an integer, otherwise it can be an autogenerated number.",Yes,No,,,,,
PERSON,gender_concept_id,Yes,integer,This field is meant to capture the biological sex at birth of the Person. This field should not be used to study gender identity issues.,Use the gender or sex value present in the data under the assumption that it is the biological sex at birth. If the source data captures gender identity it should be stored in the [OBSERVATION](https://ohdsi.github.io/CommonDataModel/cdm531.html#observation) table. [Accepted gender concepts](http://athena.ohdsi.org/search-terms/terms?domain=Gender&standardConcept=Standard&page=1&pageSize=15&query=),No,Yes,CONCEPT,CONCEPT_ID,Gender,,
PERSON,year_of_birth,Yes,integer,Compute age using year_of_birth.,"For data sources with date of birth, the year should be extracted. For data sources where the year of birth is not available, the approximate year of birth could be derived based on age group categorization, if available.",No,No,,,,,
PERSON,month_of_birth,No,integer,,"For data sources that provide the precise date of birth, the month should be extracted and stored in this field.",No,No,,,,,
PERSON,day_of_birth,No,integer,,"For data sources that provide the precise date of birth, the day should be extracted and stored in this field.",No,No,,,,,
PERSON,birth_datetime,No,datetime,,"This field is not required but highly encouraged. For data sources that provide the precise datetime of birth, that value should be stored in this field. If birth_datetime is not provided in the source, use the following logic to infer the date: If day_of_birth is null and month_of_birth is not null then use the first of the month in that year. If month_of_birth is null or if day_of_birth AND month_of_birth are both null and the person has records during their year of birth then use the date of the earliest record, otherwise use the 15th of June of that year. If time of birth is not given use midnight (00:00:0000).",No,No,,,,,
PERSON,race_concept_id,Yes,integer,This field captures race or ethnic background of the person.,"Only use this field if you have information about race or ethnic background. The Vocabulary contains Concepts about the main races and ethnic backgrounds in a hierarchical system. Due to the imprecise nature of human races and ethnic backgrounds, this is not a perfect system. Mixed races are not supported. If a clear race or ethnic background cannot be established, use Concept_Id 0. [Accepted Race Concepts](http://athena.ohdsi.org/search-terms/terms?domain=Race&standardConcept=Standard&page=1&pageSize=15&query=).",No,Yes,CONCEPT,CONCEPT_ID,Race,,
PERSON,ethnicity_concept_id,Yes,integer,"This field captures Ethnicity as defined by the Office of Management and Budget (OMB) of the US Government: it distinguishes only between ""Hispanic"" and ""Not Hispanic"". Races and ethnic backgrounds are not stored here.",Only use this field if you have US-based data and a source of this information. Do not attempt to infer Ethnicity from the race or ethnic background of the Person. [Accepted ethnicity concepts](http://athena.ohdsi.org/search-terms/terms?domain=Ethnicity&standardConcept=Standard&page=1&pageSize=15&query=),No,Yes,CONCEPT,CONCEPT_ID,Ethnicity,,
PERSON,location_id,No,integer,The location refers to the physical address of the person. This field should capture the last known location of the person. ,"Put the location_id from the [LOCATION](https://ohdsi.github.io/CommonDataModel/cdm531.html#location) table here that represents the most granular location information for the person. This could represent anything from postal code or parts thereof, state, or county for example. Since many databases contain deidentified data, it is common that the precision of the location is reduced to prevent re-identification. This field should capture the last known location. ",No,Yes,LOCATION,LOCATION_ID,,,
PERSON,provider_id,No,integer,The Provider refers to the last known primary care provider (General Practitioner).,"Put the provider_id from the [PROVIDER](https://ohdsi.github.io/CommonDataModel/cdm531.html#provider) table of the last known general practitioner of the person. If there are multiple providers, it is up to the ETL to decide which to put here.",No,Yes,PROVIDER,PROVIDER_ID,,,
PERSON,care_site_id,No,integer,The Care Site refers to where the Provider typically provides the primary care.,,No,Yes,CARE_SITE,CARE_SITE_ID,,,
PERSON,person_source_value,No,varchar(50),Use this field to link back to persons in the source data. This is typically used for error checking of ETL logic.,Some use cases require the ability to link back to persons in the source data. This field allows for the storing of the person value as it appears in the source. This field is not required but strongly recommended.,No,No,,,,,
PERSON,gender_source_value,No,varchar(50),This field is used to store the biological sex of the person from the source data. It is not intended for use in standard analytics but for reference only.,Put the biological sex of the person as it appears in the source data.,No,No,,,,,
PERSON,gender_source_concept_id,No,integer,"Due to the small number of options, this tends to be zero.","If the source data codes biological sex in a non-standard vocabulary, store the concept_id here.",No,Yes,CONCEPT,CONCEPT_ID,,,
PERSON,race_source_value,No,varchar(50),This field is used to store the race of the person from the source data. It is not intended for use in standard analytics but for reference only.,Put the race of the person as it appears in the source data.,No,No,,,,,
PERSON,race_source_concept_id,No,integer,"Due to the small number of options, this tends to be zero.",If the source data codes race in an OMOP supported vocabulary store the concept_id here.,No,Yes,CONCEPT,CONCEPT_ID,,,
PERSON,ethnicity_source_value,No,varchar(50),This field is used to store the ethnicity of the person from the source data. It is not intended for use in standard analytics but for reference only.,"If the person has an ethnicity other than the OMB standard of ""Hispanic"" or ""Not Hispanic"" store that value from the source data here.",No,No,,,,,
PERSON,ethnicity_source_concept_id,No,integer,"Due to the small number of options, this tends to be zero.","If the source data codes ethnicity in an OMOP supported vocabulary, store the concept_id here.",No,Yes,CONCEPT,CONCEPT_ID,,,
OBSERVATION_PERIOD,observation_period_id,Yes,integer,A Person can have multiple discrete Observation Periods which are identified by the Observation_Period_Id.,Assign a unique observation_period_id to each discrete Observation Period for a Person.,Yes,No,,,,,
OBSERVATION_PERIOD,person_id,Yes,integer,The Person ID of the PERSON record for which the Observation Period is recorded.,,No,Yes,PERSON,PERSON_ID,,,
OBSERVATION_PERIOD,observation_period_start_date,Yes,date,Use this date to determine the start date of the Observation Period.,"It is often the case that the idea of Observation Periods does not exist in source data. In those cases, the observation_period_start_date can be inferred as the earliest Event date available for the Person. In insurance claim data, the Observation Period can be considered as the time period the Person is enrolled with a payer. If a Person switches plans but stays with the same payer, and therefore capturing of data continues, that change would be captured in [PAYER_PLAN_PERIOD](https://ohdsi.github.io/CommonDataModel/cdm531.html#payer_plan_period).",No,No,,,,,
OBSERVATION_PERIOD,observation_period_end_date,Yes,date,Use this date to determine the end date of the period for which we can assume that all events for a Person are recorded.,"It is often the case that the idea of Observation Periods does not exist in source data. In those cases, the observation_period_end_date can be inferred as the last Event date available for the Person. In insurance claim data, the Observation Period can be considered as the time period the Person is enrolled with a payer.",No,No,,,,,
OBSERVATION_PERIOD,period_type_concept_id,Yes,integer,"This field can be used to determine the provenance of the Observation Period as in whether the period was determined from an insurance enrollment file, EHR healthcare encounters, or other sources.",Choose the observation_period_type_concept_id that best represents how the period was determined. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Type+Concept&standardConcept=Standard&page=1&pageSize=15&query=).,No,Yes,CONCEPT,CONCEPT_ID,Type Concept,,
VISIT_OCCURRENCE,visit_occurrence_id,Yes,integer,Use this to identify unique interactions between a person and the health care system. This identifier links across the other CDM event tables to associate events with a visit.,This should be populated by creating a unique identifier for each unique interaction between a person and the healthcare system where the person receives a medical good or service over a span of time.,Yes,No,,,,,
VISIT_OCCURRENCE,person_id,Yes,integer,,,No,Yes,PERSON,PERSON_ID,,,
VISIT_OCCURRENCE,visit_concept_id,Yes,integer,"This field contains a concept id representing the kind of visit, like inpatient or outpatient. All concepts in this field should be standard and belong to the Visit domain.","Populate this field based on the kind of visit that took place for the person. For example this could be ""Inpatient Visit"", ""Outpatient Visit"", ""Ambulatory Visit"", etc. This table will contain standard concepts in the Visit domain. These concepts are arranged in a hierarchical structure to facilitate cohort definitions by rolling up to generally familiar Visits adopted in most healthcare systems worldwide. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Visit&standardConcept=Standard&page=1&pageSize=15&query=).",No,Yes,CONCEPT,CONCEPT_ID,Visit,,
VISIT_OCCURRENCE,visit_start_date,Yes,date,"For inpatient visits, the start date is typically the admission date. For outpatient visits the start date and end date will be the same.","When populating VISIT_START_DATE, you should think about the patient experience to make decisions on how to define visits. In the case of an inpatient visit this should be the date the patient was admitted to the hospital or institution. In all other cases this should be the date of the patient-provider interaction.",No,No,,,,,
VISIT_OCCURRENCE,visit_start_datetime,No,datetime,,"If no time is given for the start date of a visit, set it to midnight (00:00:0000).",No,No,,,,,
cdmTableName,cdmFieldName,isRequired,cdmDatatype,userGuidance,etlConventions,isPrimaryKey,isForeignKey,fkTableName,fkFieldName,fkDomain,fkClass,unique DQ identifiers
PERSON,person_id,Yes,integer,It is assumed that every person with a different unique identifier is in fact a different person and should be treated independently.,"Any person linkage that needs to occur to uniquely identify Persons ought to be done prior to writing this table. This identifier can be the original id from the source data provided if it is an integer, otherwise it can be an autogenerated number.",Yes,No,,,,,
PERSON,gender_concept_id,Yes,integer,This field is meant to capture the biological sex at birth of the Person. This field should not be used to study gender identity issues.,Use the gender or sex value present in the data under the assumption that it is the biological sex at birth. If the source data captures gender identity it should be stored in the [OBSERVATION](https://ohdsi.github.io/CommonDataModel/cdm531.html#observation) table. [Accepted gender concepts](http://athena.ohdsi.org/search-terms/terms?domain=Gender&standardConcept=Standard&page=1&pageSize=15&query=),No,Yes,CONCEPT,CONCEPT_ID,Gender,,
PERSON,year_of_birth,Yes,integer,Compute age using year_of_birth.,"For data sources with date of birth, the year should be extracted. For data sources where the year of birth is not available, the approximate year of birth could be derived based on age group categorization, if available.",No,No,,,,,
PERSON,month_of_birth,No,integer,,"For data sources that provide the precise date of birth, the month should be extracted and stored in this field.",No,No,,,,,
PERSON,day_of_birth,No,integer,,"For data sources that provide the precise date of birth, the day should be extracted and stored in this field.",No,No,,,,,
PERSON,birth_datetime,No,datetime,,"This field is not required but highly encouraged. For data sources that provide the precise datetime of birth, that value should be stored in this field. If birth_datetime is not provided in the source, use the following logic to infer the date: If day_of_birth is null and month_of_birth is not null then use the first of the month in that year. If month_of_birth is null or if day_of_birth AND month_of_birth are both null and the person has records during their year of birth then use the date of the earliest record, otherwise use the 15th of June of that year. If time of birth is not given use midnight (00:00:0000).",No,No,,,,,
PERSON,race_concept_id,Yes,integer,This field captures race or ethnic background of the person.,"Only use this field if you have information about race or ethnic background. The Vocabulary contains Concepts about the main races and ethnic backgrounds in a hierarchical system. Due to the imprecise nature of human races and ethnic backgrounds, this is not a perfect system. Mixed races are not supported. If a clear race or ethnic background cannot be established, use Concept_Id 0. [Accepted Race Concepts](http://athena.ohdsi.org/search-terms/terms?domain=Race&standardConcept=Standard&page=1&pageSize=15&query=).",No,Yes,CONCEPT,CONCEPT_ID,Race,,
PERSON,ethnicity_concept_id,Yes,integer,"This field captures Ethnicity as defined by the Office of Management and Budget (OMB) of the US Government: it distinguishes only between ""Hispanic"" and ""Not Hispanic"". Races and ethnic backgrounds are not stored here.",Only use this field if you have US-based data and a source of this information. Do not attempt to infer Ethnicity from the race or ethnic background of the Person. [Accepted ethnicity concepts](http://athena.ohdsi.org/search-terms/terms?domain=Ethnicity&standardConcept=Standard&page=1&pageSize=15&query=),No,Yes,CONCEPT,CONCEPT_ID,Ethnicity,,
PERSON,location_id,No,integer,The location refers to the physical address of the person. This field should capture the last known location of the person. ,"Put the location_id from the [LOCATION](https://ohdsi.github.io/CommonDataModel/cdm531.html#location) table here that represents the most granular location information for the person. This could represent anything from postal code or parts thereof, state, or county for example. Since many databases contain deidentified data, it is common that the precision of the location is reduced to prevent re-identification. This field should capture the last known location. ",No,Yes,LOCATION,LOCATION_ID,,,
PERSON,provider_id,No,integer,The Provider refers to the last known primary care provider (General Practitioner).,"Put the provider_id from the [PROVIDER](https://ohdsi.github.io/CommonDataModel/cdm531.html#provider) table of the last known general practitioner of the person. If there are multiple providers, it is up to the ETL to decide which to put here.",No,Yes,PROVIDER,PROVIDER_ID,,,
PERSON,care_site_id,No,integer,The Care Site refers to where the Provider typically provides the primary care.,,No,Yes,CARE_SITE,CARE_SITE_ID,,,
PERSON,person_source_value,No,varchar(50),Use this field to link back to persons in the source data. This is typically used for error checking of ETL logic.,Some use cases require the ability to link back to persons in the source data. This field allows for the storing of the person value as it appears in the source. This field is not required but strongly recommended.,No,No,,,,,
PERSON,gender_source_value,No,varchar(50),This field is used to store the biological sex of the person from the source data. It is not intended for use in standard analytics but for reference only.,Put the biological sex of the person as it appears in the source data.,No,No,,,,,
PERSON,gender_source_concept_id,No,integer,"Due to the small number of options, this tends to be zero.","If the source data codes biological sex in a non-standard vocabulary, store the concept_id here.",No,Yes,CONCEPT,CONCEPT_ID,,,
PERSON,race_source_value,No,varchar(50),This field is used to store the race of the person from the source data. It is not intended for use in standard analytics but for reference only.,Put the race of the person as it appears in the source data.,No,No,,,,,
PERSON,race_source_concept_id,No,integer,"Due to the small number of options, this tends to be zero.",If the source data codes race in an OMOP supported vocabulary store the concept_id here.,No,Yes,CONCEPT,CONCEPT_ID,,,
PERSON,ethnicity_source_value,No,varchar(50),This field is used to store the ethnicity of the person from the source data. It is not intended for use in standard analytics but for reference only.,"If the person has an ethnicity other than the OMB standard of ""Hispanic"" or ""Not Hispanic"" store that value from the source data here.",No,No,,,,,
PERSON,ethnicity_source_concept_id,No,integer,"Due to the small number of options, this tends to be zero.","If the source data codes ethnicity in an OMOP supported vocabulary, store the concept_id here.",No,Yes,CONCEPT,CONCEPT_ID,,,
OBSERVATION_PERIOD,observation_period_id,Yes,integer,A Person can have multiple discrete Observation Periods which are identified by the Observation_Period_Id.,Assign a unique observation_period_id to each discrete Observation Period for a Person.,Yes,No,,,,,
OBSERVATION_PERIOD,person_id,Yes,integer,The Person ID of the PERSON record for which the Observation Period is recorded.,,No,Yes,PERSON,PERSON_ID,,,
OBSERVATION_PERIOD,observation_period_start_date,Yes,date,Use this date to determine the start date of the Observation Period.,"It is often the case that the idea of Observation Periods does not exist in source data. In those cases, the observation_period_start_date can be inferred as the earliest Event date available for the Person. In insurance claim data, the Observation Period can be considered as the time period the Person is enrolled with a payer. If a Person switches plans but stays with the same payer, and therefore capturing of data continues, that change would be captured in [PAYER_PLAN_PERIOD](https://ohdsi.github.io/CommonDataModel/cdm531.html#payer_plan_period).",No,No,,,,,
OBSERVATION_PERIOD,observation_period_end_date,Yes,date,Use this date to determine the end date of the period for which we can assume that all events for a Person are recorded.,"It is often the case that the idea of Observation Periods does not exist in source data. In those cases, the observation_period_end_date can be inferred as the last Event date available for the Person. In insurance claim data, the Observation Period can be considered as the time period the Person is enrolled with a payer.",No,No,,,,,
OBSERVATION_PERIOD,period_type_concept_id,Yes,integer,"This field can be used to determine the provenance of the Observation Period as in whether the period was determined from an insurance enrollment file, EHR healthcare encounters, or other sources.",Choose the observation_period_type_concept_id that best represents how the period was determined. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Type+Concept&standardConcept=Standard&page=1&pageSize=15&query=).,No,Yes,CONCEPT,CONCEPT_ID,Type Concept,,
VISIT_OCCURRENCE,visit_occurrence_id,Yes,integer,Use this to identify unique interactions between a person and the health care system. This identifier links across the other CDM event tables to associate events with a visit.,This should be populated by creating a unique identifier for each unique interaction between a person and the healthcare system where the person receives a medical good or service over a span of time.,Yes,No,,,,,
VISIT_OCCURRENCE,person_id,Yes,integer,,,No,Yes,PERSON,PERSON_ID,,,
VISIT_OCCURRENCE,visit_concept_id,Yes,integer,"This field contains a concept id representing the kind of visit, like inpatient or outpatient. All concepts in this field should be standard and belong to the Visit domain.","Populate this field based on the kind of visit that took place for the person. For example this could be ""Inpatient Visit"", ""Outpatient Visit"", ""Ambulatory Visit"", etc. This table will contain standard concepts in the Visit domain. These concepts are arranged in a hierarchical structure to facilitate cohort definitions by rolling up to generally familiar Visits adopted in most healthcare systems worldwide. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Visit&standardConcept=Standard&page=1&pageSize=15&query=).",No,Yes,CONCEPT,CONCEPT_ID,Visit,,
VISIT_OCCURRENCE,visit_start_date,Yes,date,"For inpatient visits, the start date is typically the admission date. For outpatient visits the start date and end date will be the same.","When populating VISIT_START_DATE, you should think about the patient experience to make decisions on how to define visits. In the case of an inpatient visit this should be the date the patient was admitted to the hospital or institution. In all other cases this should be the date of the patient-provider interaction.",No,No,,,,,
VISIT_OCCURRENCE,visit_start_datetime,No,datetime,,"If no time is given for the start date of a visit, set it to midnight (00:00:0000).",No,No,,,,,
VISIT_OCCURRENCE,visit_end_date,Yes,date,For inpatient visits the end date is typically the discharge date.,"Visit end dates are mandatory. If end dates are not provided in the source there are three ways in which to derive them:
- Outpatient Visit: visit_end_datetime = visit_start_datetime
- Emergency Room Visit: visit_end_datetime = visit_start_datetime
- Inpatient Visit: Usually there is information about discharge. If not, you should be able to derive the end date from the sudden decline of activity or from the absence of inpatient procedures/drugs.
- Non-hospital institution Visits: Particularly for claims data, if end dates are not provided assume the visit is for the duration of month that it occurs.
For Inpatient Visits ongoing at the date of ETL, put date of processing the data into visit_end_datetime and visit_type_concept_id with 32220 ""Still patient"" to identify the visit as incomplete.
- All other Visits: visit_end_datetime = visit_start_datetime. If this is a one-day visit the end date should match the start date.",No,No,,,,,
VISIT_OCCURRENCE,visit_end_datetime,No,datetime,,"If no time is given for the end date of a visit, set it to midnight (00:00:0000).",No,No,,,,,
VISIT_OCCURRENCE,visit_type_concept_id,Yes,Integer,"Use this field to understand the provenance of the visit record, or where the record comes from.","Populate this field based on the provenance of the visit record, as in whether it came from an EHR record or billing claim. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Type+Concept&standardConcept=Standard&page=1&pageSize=15&query=).",No,Yes,CONCEPT,CONCEPT_ID,Type Concept,,
VISIT_OCCURRENCE,provider_id,No,integer,"There will only be one provider per visit record and the ETL document should clearly state how they were chosen (attending, admitting, etc.). If there are multiple providers associated with a visit in the source, this can be reflected in the event tables (CONDITION_OCCURRENCE, PROCEDURE_OCCURRENCE, etc.) or in the VISIT_DETAIL table.","If there are multiple providers associated with a visit, you will need to choose which one to put here. The additional providers can be stored in the [VISIT_DETAIL](https://ohdsi.github.io/CommonDataModel/cdm531.html#visit_detail) table.",No,Yes,PROVIDER,PROVIDER_ID,,,
VISIT_OCCURRENCE,care_site_id,No,integer,This field provides information about the Care Site where the Visit took place.,There should only be one Care Site associated with a Visit.,No,Yes,CARE_SITE,CARE_SITE_ID,,,
VISIT_OCCURRENCE,visit_source_value,No,varchar(50),"This field houses the verbatim value from the source data representing the kind of visit that took place (inpatient, outpatient, emergency, etc.)","If there is information about the kind of visit in the source data that value should be stored here. If a visit is an amalgamation of visits from the source then use a hierarchy to choose the visit source value, such as IP -> ER-> OP. This should line up with the logic chosen to determine how visits are created.",No,No,,,,,
VISIT_OCCURRENCE,visit_source_concept_id,No,integer,,If the visit source value is coded in the source data using an OMOP supported vocabulary put the concept id representing the source value here.,No,Yes,CONCEPT,CONCEPT_ID,,,
VISIT_OCCURRENCE,admitting_source_concept_id,No,integer,"Use this field to determine where the patient was admitted from. This concept is part of the visit domain and can indicate if a patient was admitted to the hospital from a long-term care facility, for example.","If available, map the admitted_from_source_value to a standard concept in the visit domain. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Visit&standardConcept=Standard&page=1&pageSize=15&query=).",No,Yes,CONCEPT,CONCEPT_ID,Visit,,
VISIT_OCCURRENCE,admitting_source_value,No,varchar(50),,"This information may be called something different in the source data but the field is meant to contain a value indicating where a person was admitted from. Typically this applies only to visits that have a length of stay, like inpatient visits or long-term care visits.",No,No,,,,,
VISIT_OCCURRENCE,discharge_to_concept_id,No,integer,"Use this field to determine where the patient was discharged to after a visit. This concept is part of the visit domain and can indicate if a patient was discharged to home or sent to a long-term care facility, for example.","If available, map the discharge_to_source_value to a standard concept in the visit domain. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Visit&standardConcept=Standard&page=1&pageSize=15&query=).",No,Yes,CONCEPT,CONCEPT_ID,Visit,,
VISIT_OCCURRENCE,discharge_to_source_value,No,varchar(50),,"This information may be called something different in the source data but the field is meant to contain a value indicating where a person was discharged to after a visit, as in they went home or were moved to long-term care. Typically this applies only to visits that have a length of stay of a day or more.",No,No,,,,,
VISIT_OCCURRENCE,preceding_visit_occurrence_id,No,integer,Use this field to find the visit that occurred for the person prior to the given visit. There could be a few days or a few years in between.,"This field can be used to link a visit immediately preceding the current visit. Note this is not symmetrical, and there is no such thing as a ""following_visit_id"".",No,Yes,VISIT_OCCURRENCE,VISIT_OCCURRENCE_ID,,,
VISIT_DETAIL,visit_detail_id,Yes,integer,Use this to identify unique interactions between a person and the health care system. This identifier links across the other CDM event tables to associate events with a visit detail.,This should be populated by creating a unique identifier for each unique interaction between a person and the healthcare system where the person receives a medical good or service over a span of time.,Yes,No,,,,,
VISIT_DETAIL,person_id,Yes,integer,,,No,Yes,PERSON,PERSON_ID,,,
VISIT_DETAIL,visit_detail_concept_id,Yes,integer,"This field contains a concept id representing the kind of visit detail, like inpatient or outpatient. All concepts in this field should be standard and belong to the Visit domain.","Populate this field based on the kind of visit that took place for the person. For example this could be ""Inpatient Visit"", ""Outpatient Visit"", ""Ambulatory Visit"", etc. This table will contain standard concepts in the Visit domain. These concepts are arranged in a hierarchical structure to facilitate cohort definitions by rolling up to generally familiar Visits adopted in most healthcare systems worldwide. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Visit&standardConcept=Standard&page=1&pageSize=15&query=).",No,Yes,CONCEPT,CONCEPT_ID,Visit,,
VISIT_DETAIL,visit_detail_start_date,Yes,date,This is the date of the start of the encounter. This may or may not be equal to the date of the Visit the Visit Detail is associated with.,"When populating VISIT_DETAIL_START_DATE, you should think about the patient experience to make decisions on how to define visits. Most likely this should be the date of the patient-provider interaction.",No,No,,,,,
VISIT_DETAIL,visit_detail_start_datetime,No,datetime,,"If no time is given for the start date of a visit, set it to midnight (00:00:0000).",No,No,,,,,
- All other Visits: visit_end_datetime = visit_start_datetime. If this is a one-day visit the end date should match the start date.",No,No,,,,,
VISIT_OCCURRENCE,visit_end_datetime,No,datetime,,"If no time is given for the end date of a visit, set it to midnight (00:00:0000).",No,No,,,,,
VISIT_OCCURRENCE,visit_type_concept_id,Yes,Integer,"Use this field to understand the provenance of the visit record, or where the record comes from.","Populate this field based on the provenance of the visit record, as in whether it came from an EHR record or billing claim. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Type+Concept&standardConcept=Standard&page=1&pageSize=15&query=).",No,Yes,CONCEPT,CONCEPT_ID,Type Concept,,
VISIT_OCCURRENCE,provider_id,No,integer,"There will only be one provider per visit record and the ETL document should clearly state how they were chosen (attending, admitting, etc.). If there are multiple providers associated with a visit in the source, this can be reflected in the event tables (CONDITION_OCCURRENCE, PROCEDURE_OCCURRENCE, etc.) or in the VISIT_DETAIL table.","If there are multiple providers associated with a visit, you will need to choose which one to put here. The additional providers can be stored in the [VISIT_DETAIL](https://ohdsi.github.io/CommonDataModel/cdm531.html#visit_detail) table.",No,Yes,PROVIDER,PROVIDER_ID,,,
VISIT_OCCURRENCE,care_site_id,No,integer,This field provides information about the Care Site where the Visit took place.,There should only be one Care Site associated with a Visit.,No,Yes,CARE_SITE,CARE_SITE_ID,,,
VISIT_OCCURRENCE,visit_source_value,No,varchar(50),"This field houses the verbatim value from the source data representing the kind of visit that took place (inpatient, outpatient, emergency, etc.)","If there is information about the kind of visit in the source data that value should be stored here. If a visit is an amalgamation of visits from the source then use a hierarchy to choose the visit source value, such as IP -> ER-> OP. This should line up with the logic chosen to determine how visits are created.",No,No,,,,,
VISIT_OCCURRENCE,visit_source_concept_id,No,integer,,If the visit source value is coded in the source data using an OMOP supported vocabulary put the concept id representing the source value here.,No,Yes,CONCEPT,CONCEPT_ID,,,
VISIT_OCCURRENCE,admitted_from_concept_id,No,integer,"Use this field to determine where the patient was admitted from. This concept is part of the visit domain and can indicate if a patient was admitted to the hospital from a long-term care facility, for example. If patient is admitted from home, set this field to zero.","If available, map the admitted_from_source_value to a standard concept in the visit domain. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Visit&standardConcept=Standard&page=1&pageSize=15&query=).",No,Yes,CONCEPT,CONCEPT_ID,Visit,,
VISIT_OCCURRENCE,admitted_from_source_value,No,varchar(50),,"This information may be called something different in the source data but the field is meant to contain a value indicating where a person was admitted from. Typically this applies only to visits that have a length of stay, like inpatient visits or long-term care visits.",No,No,,,,,
VISIT_OCCURRENCE,discharge_to_concept_id,No,integer,"Use this field to determine where the patient was discharged to after a visit. This concept is part of the visit domain and can indicate if a patient was discharged to home or sent to a long-term care facility, for example. If patient is discharged to home, set this field to zero.","If available, map the discharge_to_source_value to a standard concept in the visit domain. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Visit&standardConcept=Standard&page=1&pageSize=15&query=).",No,Yes,CONCEPT,CONCEPT_ID,Visit,,
VISIT_OCCURRENCE,discharge_to_source_value,No,varchar(50),,"This information may be called something different in the source data but the field is meant to contain a value indicating where a person was discharged to after a visit, as in they went home or were moved to long-term care. Typically this applies only to visits that have a length of stay of a day or more.",No,No,,,,,
VISIT_OCCURRENCE,preceding_visit_occurrence_id,No,integer,Use this field to find the visit that occurred for the person prior to the given visit. There could be a few days or a few years in between.,"This field can be used to link a visit immediately preceding the current visit. Note this is not symmetrical, and there is no such thing as a ""following_visit_id"".",No,Yes,VISIT_OCCURRENCE,VISIT_OCCURRENCE_ID,,,
VISIT_DETAIL,visit_detail_id,Yes,integer,Use this to identify unique interactions between a person and the health care system. This identifier links across the other CDM event tables to associate events with a visit detail.,This should be populated by creating a unique identifier for each unique interaction between a person and the healthcare system where the person receives a medical good or service over a span of time.,Yes,No,,,,,
VISIT_DETAIL,person_id,Yes,integer,,,No,Yes,PERSON,PERSON_ID,,,
VISIT_DETAIL,visit_detail_concept_id,Yes,integer,"This field contains a concept id representing the kind of visit detail, like inpatient or outpatient. All concepts in this field should be standard and belong to the Visit domain.","Populate this field based on the kind of visit that took place for the person. For example this could be ""Inpatient Visit"", ""Outpatient Visit"", ""Ambulatory Visit"", etc. This table will contain standard concepts in the Visit domain. These concepts are arranged in a hierarchical structure to facilitate cohort definitions by rolling up to generally familiar Visits adopted in most healthcare systems worldwide. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Visit&standardConcept=Standard&page=1&pageSize=15&query=).",No,Yes,CONCEPT,CONCEPT_ID,Visit,,
VISIT_DETAIL,visit_detail_start_date,Yes,date,This is the date of the start of the encounter. This may or may not be equal to the date of the Visit the Visit Detail is associated with.,"When populating VISIT_DETAIL_START_DATE, you should think about the patient experience to make decisions on how to define visits. Most likely this should be the date of the patient-provider interaction.",No,No,,,,,
VISIT_DETAIL,visit_detail_start_datetime,No,datetime,,"If no time is given for the start date of a visit, set it to midnight (00:00:0000).",No,No,,,,,
VISIT_DETAIL,visit_detail_end_date,Yes,date,This the end date of the patient-provider interaction.,"Visit Detail end dates are mandatory. If end dates are not provided in the source there are three ways in which to derive them:<br>
- Outpatient Visit Detail: visit_detail_end_datetime = visit_detail_start_datetime
- Emergency Room Visit Detail: visit_detail_end_datetime = visit_detail_start_datetime
- Inpatient Visit Detail: Usually there is information about discharge. If not, you should be able to derive the end date from the sudden decline of activity or from the absence of inpatient procedures/drugs.
- Non-hospital institution Visit Details: Particularly for claims data, if end dates are not provided assume the visit is for the duration of month that it occurs.<br>
For Inpatient Visit Details ongoing at the date of ETL, put date of processing the data into visit_detai_end_datetime and visit_detail_type_concept_id with 32220 ""Still patient"" to identify the visit as incomplete.
All other Visits Details: visit_detail_end_datetime = visit_detail_start_datetime. ",No,No,,,,,
VISIT_DETAIL,visit_detail_end_datetime,No,datetime,,"If no time is given for the end date of a visit, set it to midnight (00:00:0000).",No,No,,,,,
VISIT_DETAIL,visit_detail_type_concept_id,Yes,integer,"Use this field to understand the provenance of the visit detail record, or where the record comes from.","Populate this field based on the provenance of the visit detail record, as in whether it came from an EHR record or billing claim. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Type+Concept&standardConcept=Standard&page=1&pageSize=15&query=).",No,Yes,CONCEPT,CONCEPT_ID,Type Concept,,
VISIT_DETAIL,provider_id,No,integer,"There will only be one provider per **visit** record and the ETL document should clearly state how they were chosen (attending, admitting, etc.). This is a typical reason for leveraging the VISIT_DETAIL table as even though each VISIT_DETAIL record can only have one provider, there is no limit to the number of VISIT_DETAIL records that can be associated to a VISIT_OCCURRENCE record.",The additional providers associated to a Visit can be stored in this table where each VISIT_DETAIL record represents a different provider.,No,Yes,PROVIDER,PROVIDER_ID,,,
VISIT_DETAIL,care_site_id,No,integer,This field provides information about the Care Site where the Visit Detail took place.,There should only be one Care Site associated with a Visit Detail.,No,Yes,CARE_SITE,CARE_SITE_ID,,,
VISIT_DETAIL,visit_detail_source_value,No,varchar(50),"This field houses the verbatim value from the source data representing the kind of visit detail that took place (inpatient, outpatient, emergency, etc.)","If there is information about the kind of visit detail in the source data that value should be stored here. If a visit is an amalgamation of visits from the source then use a hierarchy to choose the VISIT_DETAIL_SOURCE_VALUE, such as IP -> ER-> OP. This should line up with the logic chosen to determine how visits are created.",No,No,,,,,
VISIT_DETAIL,visit_detail_source_concept_id,No,Integer,,If the VISIT_DETAIL_SOURCE_VALUE is coded in the source data using an OMOP supported vocabulary put the concept id representing the source value here.,No,Yes,CONCEPT,CONCEPT_ID,,,
VISIT_DETAIL,admitting_source_value,No,Varchar(50),,"This information may be called something different in the source data but the field is meant to contain a value indicating where a person was admitted from. Typically this applies only to visits that have a length of stay, like inpatient visits or long-term care visits.",No,No,,,,,
VISIT_DETAIL,admitting_source_concept_id,No,Integer,"Use this field to determine where the patient was admitted from. This concept is part of the visit domain and can indicate if a patient was admitted to the hospital from a long-term care facility, for example.","If available, map the admitted_from_source_value to a standard concept in the visit domain. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Visit&standardConcept=Standard&page=1&pageSize=15&query=).",No,Yes,CONCEPT,CONCEPT_ID,Visit,,
VISIT_DETAIL,discharge_to_source_value,No,Varchar(50),,"This information may be called something different in the source data but the field is meant to contain a value indicating where a person was discharged to after a visit, as in they went home or were moved to long-term care. Typically this applies only to visits that have a length of stay of a day or more.",No,No,,,,,
VISIT_DETAIL,discharge_to_concept_id,No,integer,"Use this field to determine where the patient was discharged to after a visit detail record. This concept is part of the visit domain and can indicate if a patient was discharged to home or sent to a long-term care facility, for example.","If available, map the DISCHARGE_TO_SOURCE_VALUE to a Standard Concept in the Visit domain. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Visit&standardConcept=Standard&page=1&pageSize=15&query=).",No,Yes,CONCEPT,CONCEPT_ID,Visit,,
VISIT_DETAIL,preceding_visit_detail_id,No,integer,Use this field to find the visit detail that occurred for the person prior to the given visit detail record. There could be a few days or a few years in between.,"The PRECEDING_VISIT_DETAIL_ID can be used to link a visit immediately preceding the current Visit Detail. Note this is not symmetrical, and there is no such thing as a ""following_visit_id"".",No,Yes,VISIT_DETAIL,VISIT_DETAIL_ID,,,
VISIT_DETAIL,visit_detail_parent_id,No,integer,Use this field to find the visit detail that subsumes the given visit detail record. This is used in the case that a visit detail record needs to be nested beyond the VISIT_OCCURRENCE/VISIT_DETAIL relationship.,"If there are multiple nested levels to how Visits are represented in the source, the VISIT_DETAIL_PARENT_ID can be used to record this relationship. ",No,Yes,VISIT_DETAIL,VISIT_DETAIL_ID,,,
VISIT_DETAIL,visit_occurrence_id,Yes,integer,Use this field to link the VISIT_DETAIL record to its VISIT_OCCURRENCE.,Put the VISIT_OCCURRENCE_ID that subsumes the VISIT_DETAIL record here.,No,Yes,VISIT_OCCURRENCE,VISIT_OCCURRENCE_ID,,,
CONDITION_OCCURRENCE,condition_occurrence_id,Yes,integer,The unique key given to a condition record for a person. Refer to the ETL for how duplicate conditions during the same visit were handled.,"Each instance of a condition present in the source data should be assigned this unique key. In some cases, a person can have multiple records of the same condition within the same visit. It is valid to keep these duplicates and assign them individual, unique, CONDITION_OCCURRENCE_IDs, though it is up to the ETL how they should be handled.",Yes,No,,,,,
CONDITION_OCCURRENCE,person_id,Yes,integer,The PERSON_ID of the PERSON for whom the condition is recorded.,,No,Yes,PERSON,PERSON_ID,,,
CONDITION_OCCURRENCE,condition_concept_id,Yes,integer,"The CONDITION_CONCEPT_ID field is recommended for primary use in analyses, and must be used for network studies. This is the standard concept mapped from the source value which represents a condition","The CONCEPT_ID that the CONDITION_SOURCE_VALUE maps to. Only records whose source values map to concepts with a domain of ""Condition"" should go in this table. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Condition&standardConcept=Standard&page=1&pageSize=15&query=).",No,Yes,CONCEPT,CONCEPT_ID,Condition,,
CONDITION_OCCURRENCE,condition_start_date,Yes,date,Use this date to determine the start date of the condition,"Most often data sources do not have the idea of a start date for a condition. Rather, if a source only has one date associated with a condition record it is acceptable to use that date for both the CONDITION_START_DATE and the CONDITION_END_DATE.",No,No,,,,,
CONDITION_OCCURRENCE,condition_start_datetime,No,datetime,,If a source does not specify datetime the convention is to set the time to midnight (00:00:0000),No,No,,,,,
CONDITION_OCCURRENCE,condition_end_date,No,date,Use this date to determine the end date of the condition,"Most often data sources do not have the idea of a start date for a condition. Rather, if a source only has one date associated with a condition record it is acceptable to use that date for both the CONDITION_START_DATE and the CONDITION_END_DATE.",No,No,,,,,
CONDITION_OCCURRENCE,condition_end_datetime,No,datetime,,If a source does not specify datetime the convention is to set the time to midnight (00:00:0000),No,No,,,,,
CONDITION_OCCURRENCE,condition_type_concept_id,Yes,integer,"This field can be used to determine the provenance of the Condition record, as in whether the condition was from an EHR system, insurance claim, registry, or other sources.",Choose the CONDITION_TYPE_CONCEPT_ID that best represents the provenance of the record. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Type+Concept&standardConcept=Standard&page=1&pageSize=15&query=).,No,Yes,CONCEPT,CONCEPT_ID,Type Concept,,
CONDITION_OCCURRENCE,condition_status_concept_id,No,integer,"This concept represents the point during the visit the diagnosis was given (admitting diagnosis, final diagnosis), whether the diagnosis was determined due to laboratory findings, if the diagnosis was exclusionary, or if it was a preliminary diagnosis, among others. ","Choose the Concept in the Condition Status domain that best represents the point during the visit when the diagnosis was given. These can include admitting diagnosis, principal diagnosis, and secondary diagnosis. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Condition+Status&standardConcept=Standard&page=1&pageSize=15&query=).",No,Yes,CONCEPT,CONCEPT_ID,Condition Status,,
CONDITION_OCCURRENCE,stop_reason,No,varchar(20),The Stop Reason indicates why a Condition is no longer valid with respect to the purpose within the source data. Note that a Stop Reason does not necessarily imply that the condition is no longer occurring.,This information is often not populated in source data and it is a valid etl choice to leave it blank if the information does not exist.,No,No,,,,,
CONDITION_OCCURRENCE,provider_id,No,integer,"The provider associated with condition record, e.g. the provider who made the diagnosis or the provider who recorded the symptom.","The ETL may need to make a choice as to which PROVIDER_ID to put here. Based on what is available this may or may not be different than the provider associated with the overall VISIT_OCCURRENCE record, for example the admitting vs attending physician on an EHR record.",No,Yes,PROVIDER,PROVIDER_ID,,,
CONDITION_OCCURRENCE,visit_occurrence_id,No,integer,The visit during which the condition occurred.,"Depending on the structure of the source data, this may have to be determined based on dates. If a CONDITION_START_DATE occurs within the start and end date of a Visit it is a valid ETL choice to choose the VISIT_OCCURRENCE_ID from the Visit that subsumes it, even if not explicitly stated in the data. While not required, an attempt should be made to locate the VISIT_OCCURRENCE_ID of the CONDITION_OCCURRENCE record.",No,Yes,VISIT_OCCURRENCE,VISIT_OCCURRENCE_ID,,,
CONDITION_OCCURRENCE,visit_detail_id,No,integer,"The VISIT_DETAIL record during which the condition occurred. For example, if the person was in the ICU at the time of the diagnosis the VISIT_OCCURRENCE record would reflect the overall hospital stay and the VISIT_DETAIL record would reflect the ICU stay during the hospital visit.",Same rules apply as for the VISIT_OCCURRENCE_ID.,No,Yes,VISIT_DETAIL,VISIT_DETAIL_ID,,,
CONDITION_OCCURRENCE,condition_source_value,No,varchar(50),"This field houses the verbatim value from the source data representing the condition that occurred. For example, this could be an ICD10 or Read code.",This code is mapped to a Standard Condition Concept in the Standardized Vocabularies and the original code is stored here for reference.,No,No,,,,,
CONDITION_OCCURRENCE,condition_source_concept_id,No,integer,"This is the concept representing the condition source value and may not necessarily be standard. This field is discouraged from use in analysis because it is not required to contain Standard Concepts that are used across the OHDSI community, and should only be used when Standard Concepts do not adequately represent the source detail for the Condition necessary for a given analytic use case. Consider using CONDITION_CONCEPT_ID instead to enable standardized analytics that can be consistent across the network.",If the CONDITION_SOURCE_VALUE is coded in the source data using an OMOP supported vocabulary put the concept id representing the source value here.,No,Yes,CONCEPT,CONCEPT_ID,,,
CONDITION_OCCURRENCE,condition_status_source_value,No,varchar(50),This field houses the verbatim value from the source data representing the condition status.,This information may be called something different in the source data but the field is meant to contain a value indicating when and how a diagnosis was given to a patient. This source value is mapped to a standard concept which is stored in the CONDITION_STATUS_CONCEPT_ID field.,No,No,,,,,
DRUG_EXPOSURE,drug_exposure_id,Yes,integer,The unique key given to records of drug dispensings or administrations for a person. Refer to the ETL for how duplicate drugs during the same visit were handled.,"Each instance of a drug dispensing or administration present in the source data should be assigned this unique key. In some cases, a person can have multiple records of the same drug within the same visit. It is valid to keep these duplicates and assign them individual, unique, DRUG_EXPOSURE_IDs, though it is up to the ETL how they should be handled.",Yes,No,,,,,
DRUG_EXPOSURE,person_id,Yes,integer,The PERSON_ID of the PERSON for whom the drug dispensing or administration is recorded. This may be a system generated code.,,No,Yes,PERSON,PERSON_ID,,,
DRUG_EXPOSURE,drug_concept_id,Yes,integer,"The DRUG_CONCEPT_ID field is recommended for primary use in analyses, and must be used for network studies. This is the standard concept mapped from the source concept id which represents a drug product or molecule otherwise introduced to the body. The drug concepts can have a varying degree of information about drug strength and dose. This information is relevant in the context of quantity and administration information in the subsequent fields plus strength information from the DRUG_STRENGTH table, provided as part of the standard vocabulary download.","The CONCEPT_ID that the DRUG_SOURCE_VALUE maps to. The concept id should be derived either from mapping from the source concept id or by picking the drug concept representing the most amount of detail you have. Records whose source values map to standard concepts with a domain of Drug should go in this table. When the Drug Source Value of the code cannot be translated into Standard Drug Concept IDs, a Drug exposure entry is stored with only the corresponding SOURCE_CONCEPT_ID and DRUG_SOURCE_VALUE and a DRUG_CONCEPT_ID of 0. The Drug Concept with the most detailed content of information is preferred during the mapping process. These are indicated in the CONCEPT_CLASS_ID field of the Concept and are recorded in the following order of precedence: 'Branded Pack', 'Clinical Pack', 'Branded Drug', 'Clinical Drug', 'Branded Drug Component', 'Clinical Drug Component', 'Branded Drug Form', 'Clinical Drug Form', and only if no other information is available 'Ingredient'. Note: If only the drug class is known, the DRUG_CONCEPT_ID field should contain 0. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Drug&standardConcept=Standard&page=1&pageSize=15&query=).",No,Yes,CONCEPT,CONCEPT_ID,Drug,,
DRUG_EXPOSURE,drug_exposure_start_date,Yes,date,Use this date to determine the start date of the drug record.,"Valid entries include a start date of a prescription, the date a prescription was filled, or the date on which a Drug administration was recorded. It is a valid ETL choice to use the date the drug was ordered as the DRUG_EXPOSURE_START_DATE.",No,No,,,,,
DRUG_EXPOSURE,drug_exposure_start_datetime,No,datetime,,"This is not required, though it is in v6. If a source does not specify datetime the convention is to set the time to midnight (00:00:0000)",No,No,,,,,
DRUG_EXPOSURE,drug_exposure_end_date,Yes,date,The DRUG_EXPOSURE_END_DATE denotes the day the drug exposure ended for the patient.,"If this information is not explicitly available in the data, infer the end date using the following methods:<br><br> 1. Start first with duration or days supply using the calculation drug start date + days supply -1 day. 2. Use quantity divided by daily dose that you may obtain from the sig or a source field (or assumed daily dose of 1) for solid, indivisibile, drug products. If quantity represents ingredient amount, quantity divided by daily dose * concentration (from drug_strength) drug concept id tells you the dose form. 3. If it is an administration record, set drug end date equal to drug start date. If the record is a written prescription then set end date to start date + 29. If the record is a mail-order prescription set end date to start date + 89. The end date must be equal to or greater than the start date. Ibuprofen 20mg/mL oral solution concept tells us this is oral solution. Calculate duration as quantity (200 example) * daily dose (5mL) /concentration (20mg/mL) 200*5/20 = 50 days. [Examples by dose form](https://ohdsi.github.io/CommonDataModel/drug_dose.html)",No,No,,,,,
DRUG_EXPOSURE,drug_exposure_end_datetime,No,datetime,,"This is not required, though it is in v6. If a source does not specify datetime the convention is to set the time to midnight (00:00:0000)",No,No,,,,,
DRUG_EXPOSURE,verbatim_end_date,No,date,"This is the end date of the drug exposure as it appears in the source data, if it is given",Put the end date or discontinuation date as it appears from the source data or leave blank if unavailable.,No,No,,,,,
DRUG_EXPOSURE,drug_type_concept_id,Yes,integer,"You can use the TYPE_CONCEPT_ID to delineate between prescriptions written vs. prescriptions dispensed vs. medication history vs. patient-reported exposure, etc.","Choose the drug_type_concept_id that best represents the provenance of the record, for example whether it came from a record of a prescription written or physician administered drug. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Type+Concept&standardConcept=Standard&page=1&pageSize=15&query=).",No,Yes,CONCEPT,CONCEPT_ID,Type Concept,,
DRUG_EXPOSURE,stop_reason,No,varchar(20),"The reason a person stopped a medication as it is represented in the source. Reasons include regimen completed, changed, removed, etc. This field will be retired in v6.0.",This information is often not populated in source data and it is a valid etl choice to leave it blank if the information does not exist.,No,No,,,,,
DRUG_EXPOSURE,refills,No,integer,This is only filled in when the record is coming from a prescription written this field is meant to represent intended refills at time of the prescription.,,No,No,,,,,
All other Visits Details: visit_detail_end_datetime = visit_detail_start_datetime. ",No,No,,,,,
VISIT_DETAIL,visit_detail_end_datetime,No,datetime,,"If no time is given for the end date of a visit, set it to midnight (00:00:0000).",No,No,,,,,
VISIT_DETAIL,visit_detail_type_concept_id,Yes,integer,"Use this field to understand the provenance of the visit detail record, or where the record comes from.","Populate this field based on the provenance of the visit detail record, as in whether it came from an EHR record or billing claim. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Type+Concept&standardConcept=Standard&page=1&pageSize=15&query=).",No,Yes,CONCEPT,CONCEPT_ID,Type Concept,,
VISIT_DETAIL,provider_id,No,integer,"There will only be one provider per **visit** record and the ETL document should clearly state how they were chosen (attending, admitting, etc.). This is a typical reason for leveraging the VISIT_DETAIL table as even though each VISIT_DETAIL record can only have one provider, there is no limit to the number of VISIT_DETAIL records that can be associated to a VISIT_OCCURRENCE record.",The additional providers associated to a Visit can be stored in this table where each VISIT_DETAIL record represents a different provider.,No,Yes,PROVIDER,PROVIDER_ID,,,
VISIT_DETAIL,care_site_id,No,integer,This field provides information about the Care Site where the Visit Detail took place.,There should only be one Care Site associated with a Visit Detail.,No,Yes,CARE_SITE,CARE_SITE_ID,,,
VISIT_DETAIL,visit_detail_source_value,No,varchar(50),"This field houses the verbatim value from the source data representing the kind of visit detail that took place (inpatient, outpatient, emergency, etc.)","If there is information about the kind of visit detail in the source data that value should be stored here. If a visit is an amalgamation of visits from the source then use a hierarchy to choose the VISIT_DETAIL_SOURCE_VALUE, such as IP -> ER-> OP. This should line up with the logic chosen to determine how visits are created.",No,No,,,,,
VISIT_DETAIL,visit_detail_source_concept_id,No,Integer,,If the VISIT_DETAIL_SOURCE_VALUE is coded in the source data using an OMOP supported vocabulary put the concept id representing the source value here.,No,Yes,CONCEPT,CONCEPT_ID,,,
VISIT_DETAIL,admitted_from_source_value,No,Varchar(50),,"This information may be called something different in the source data but the field is meant to contain a value indicating where a person was admitted from. Typically this applies only to visits that have a length of stay, like inpatient visits or long-term care visits.",No,No,,,,,
VISIT_DETAIL,admitted_from_concept_id,No,Integer,"Use this field to determine where the patient was admitted from. This concept is part of the visit domain and can indicate if a patient was admitted to the hospital from a long-term care facility, for example. If patient is admitted from home, set this field to zero.","If available, map the admitted_from_source_value to a standard concept in the visit domain. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Visit&standardConcept=Standard&page=1&pageSize=15&query=).",No,Yes,CONCEPT,CONCEPT_ID,Visit,,
VISIT_DETAIL,discharge_to_source_value,No,Varchar(50),,"This information may be called something different in the source data but the field is meant to contain a value indicating where a person was discharged to after a visit, as in they went home or were moved to long-term care. Typically this applies only to visits that have a length of stay of a day or more.",No,No,,,,,
VISIT_DETAIL,discharge_to_concept_id,No,integer,"Use this field to determine where the patient was discharged to after a visit detail record. This concept is part of the visit domain and can indicate if a patient was discharged to home or sent to a long-term care facility, for example. If patient is discharged to home, set this field to zero.","If available, map the DISCHARGE_TO_SOURCE_VALUE to a Standard Concept in the Visit domain. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Visit&standardConcept=Standard&page=1&pageSize=15&query=).",No,Yes,CONCEPT,CONCEPT_ID,Visit,,
VISIT_DETAIL,preceding_visit_detail_id,No,integer,Use this field to find the visit detail that occurred for the person prior to the given visit detail record. There could be a few days or a few years in between.,"The PRECEDING_VISIT_DETAIL_ID can be used to link a visit immediately preceding the current Visit Detail. Note this is not symmetrical, and there is no such thing as a ""following_visit_id"".",No,Yes,VISIT_DETAIL,VISIT_DETAIL_ID,,,
VISIT_DETAIL,visit_detail_parent_id,No,integer,Use this field to find the visit detail that subsumes the given visit detail record. This is used in the case that a visit detail record needs to be nested beyond the VISIT_OCCURRENCE/VISIT_DETAIL relationship.,"If there are multiple nested levels to how Visits are represented in the source, the VISIT_DETAIL_PARENT_ID can be used to record this relationship. ",No,Yes,VISIT_DETAIL,VISIT_DETAIL_ID,,,
VISIT_DETAIL,visit_occurrence_id,Yes,integer,Use this field to link the VISIT_DETAIL record to its VISIT_OCCURRENCE.,Put the VISIT_OCCURRENCE_ID that subsumes the VISIT_DETAIL record here.,No,Yes,VISIT_OCCURRENCE,VISIT_OCCURRENCE_ID,,,
CONDITION_OCCURRENCE,condition_occurrence_id,Yes,integer,The unique key given to a condition record for a person. Refer to the ETL for how duplicate conditions during the same visit were handled.,"Each instance of a condition present in the source data should be assigned this unique key. In some cases, a person can have multiple records of the same condition within the same visit. It is valid to keep these duplicates and assign them individual, unique, CONDITION_OCCURRENCE_IDs, though it is up to the ETL how they should be handled.",Yes,No,,,,,
CONDITION_OCCURRENCE,person_id,Yes,integer,The PERSON_ID of the PERSON for whom the condition is recorded.,,No,Yes,PERSON,PERSON_ID,,,
CONDITION_OCCURRENCE,condition_concept_id,Yes,integer,"The CONDITION_CONCEPT_ID field is recommended for primary use in analyses, and must be used for network studies. This is the standard concept mapped from the source value which represents a condition","The CONCEPT_ID that the CONDITION_SOURCE_VALUE maps to. Only records whose source values map to concepts with a domain of ""Condition"" should go in this table. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Condition&standardConcept=Standard&page=1&pageSize=15&query=).",No,Yes,CONCEPT,CONCEPT_ID,Condition,,
CONDITION_OCCURRENCE,condition_start_date,Yes,date,Use this date to determine the start date of the condition,"Most often data sources do not have the idea of a start date for a condition. Rather, if a source only has one date associated with a condition record it is acceptable to use that date for both the CONDITION_START_DATE and the CONDITION_END_DATE.",No,No,,,,,
CONDITION_OCCURRENCE,condition_start_datetime,No,datetime,,If a source does not specify datetime the convention is to set the time to midnight (00:00:0000),No,No,,,,,
CONDITION_OCCURRENCE,condition_end_date,No,date,Use this date to determine the end date of the condition,"Most often data sources do not have the idea of a start date for a condition. Rather, if a source only has one date associated with a condition record it is acceptable to use that date for both the CONDITION_START_DATE and the CONDITION_END_DATE.",No,No,,,,,
CONDITION_OCCURRENCE,condition_end_datetime,No,datetime,,If a source does not specify datetime the convention is to set the time to midnight (00:00:0000),No,No,,,,,
CONDITION_OCCURRENCE,condition_type_concept_id,Yes,integer,"This field can be used to determine the provenance of the Condition record, as in whether the condition was from an EHR system, insurance claim, registry, or other sources.",Choose the CONDITION_TYPE_CONCEPT_ID that best represents the provenance of the record. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Type+Concept&standardConcept=Standard&page=1&pageSize=15&query=).,No,Yes,CONCEPT,CONCEPT_ID,Type Concept,,
CONDITION_OCCURRENCE,condition_status_concept_id,No,integer,"This concept represents the point during the visit the diagnosis was given (admitting diagnosis, final diagnosis), whether the diagnosis was determined due to laboratory findings, if the diagnosis was exclusionary, or if it was a preliminary diagnosis, among others. ","Choose the Concept in the Condition Status domain that best represents the point during the visit when the diagnosis was given. These can include admitting diagnosis, principal diagnosis, and secondary diagnosis. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Condition+Status&standardConcept=Standard&page=1&pageSize=15&query=).",No,Yes,CONCEPT,CONCEPT_ID,Condition Status,,
CONDITION_OCCURRENCE,stop_reason,No,varchar(20),The Stop Reason indicates why a Condition is no longer valid with respect to the purpose within the source data. Note that a Stop Reason does not necessarily imply that the condition is no longer occurring.,This information is often not populated in source data and it is a valid etl choice to leave it blank if the information does not exist.,No,No,,,,,
CONDITION_OCCURRENCE,provider_id,No,integer,"The provider associated with condition record, e.g. the provider who made the diagnosis or the provider who recorded the symptom.","The ETL may need to make a choice as to which PROVIDER_ID to put here. Based on what is available this may or may not be different than the provider associated with the overall VISIT_OCCURRENCE record, for example the admitting vs attending physician on an EHR record.",No,Yes,PROVIDER,PROVIDER_ID,,,
CONDITION_OCCURRENCE,visit_occurrence_id,No,integer,The visit during which the condition occurred.,"Depending on the structure of the source data, this may have to be determined based on dates. If a CONDITION_START_DATE occurs within the start and end date of a Visit it is a valid ETL choice to choose the VISIT_OCCURRENCE_ID from the Visit that subsumes it, even if not explicitly stated in the data. While not required, an attempt should be made to locate the VISIT_OCCURRENCE_ID of the CONDITION_OCCURRENCE record.",No,Yes,VISIT_OCCURRENCE,VISIT_OCCURRENCE_ID,,,
CONDITION_OCCURRENCE,visit_detail_id,No,integer,"The VISIT_DETAIL record during which the condition occurred. For example, if the person was in the ICU at the time of the diagnosis the VISIT_OCCURRENCE record would reflect the overall hospital stay and the VISIT_DETAIL record would reflect the ICU stay during the hospital visit.",Same rules apply as for the VISIT_OCCURRENCE_ID.,No,Yes,VISIT_DETAIL,VISIT_DETAIL_ID,,,
CONDITION_OCCURRENCE,condition_source_value,No,varchar(50),"This field houses the verbatim value from the source data representing the condition that occurred. For example, this could be an ICD10 or Read code.",This code is mapped to a Standard Condition Concept in the Standardized Vocabularies and the original code is stored here for reference.,No,No,,,,,
CONDITION_OCCURRENCE,condition_source_concept_id,No,integer,"This is the concept representing the condition source value and may not necessarily be standard. This field is discouraged from use in analysis because it is not required to contain Standard Concepts that are used across the OHDSI community, and should only be used when Standard Concepts do not adequately represent the source detail for the Condition necessary for a given analytic use case. Consider using CONDITION_CONCEPT_ID instead to enable standardized analytics that can be consistent across the network.",If the CONDITION_SOURCE_VALUE is coded in the source data using an OMOP supported vocabulary put the concept id representing the source value here.,No,Yes,CONCEPT,CONCEPT_ID,,,
CONDITION_OCCURRENCE,condition_status_source_value,No,varchar(50),This field houses the verbatim value from the source data representing the condition status.,This information may be called something different in the source data but the field is meant to contain a value indicating when and how a diagnosis was given to a patient. This source value is mapped to a standard concept which is stored in the CONDITION_STATUS_CONCEPT_ID field.,No,No,,,,,
DRUG_EXPOSURE,drug_exposure_id,Yes,integer,The unique key given to records of drug dispensings or administrations for a person. Refer to the ETL for how duplicate drugs during the same visit were handled.,"Each instance of a drug dispensing or administration present in the source data should be assigned this unique key. In some cases, a person can have multiple records of the same drug within the same visit. It is valid to keep these duplicates and assign them individual, unique, DRUG_EXPOSURE_IDs, though it is up to the ETL how they should be handled.",Yes,No,,,,,
DRUG_EXPOSURE,person_id,Yes,integer,The PERSON_ID of the PERSON for whom the drug dispensing or administration is recorded. This may be a system generated code.,,No,Yes,PERSON,PERSON_ID,,,
DRUG_EXPOSURE,drug_concept_id,Yes,integer,"The DRUG_CONCEPT_ID field is recommended for primary use in analyses, and must be used for network studies. This is the standard concept mapped from the source concept id which represents a drug product or molecule otherwise introduced to the body. The drug concepts can have a varying degree of information about drug strength and dose. This information is relevant in the context of quantity and administration information in the subsequent fields plus strength information from the DRUG_STRENGTH table, provided as part of the standard vocabulary download.","The CONCEPT_ID that the DRUG_SOURCE_VALUE maps to. The concept id should be derived either from mapping from the source concept id or by picking the drug concept representing the most amount of detail you have. Records whose source values map to standard concepts with a domain of Drug should go in this table. When the Drug Source Value of the code cannot be translated into Standard Drug Concept IDs, a Drug exposure entry is stored with only the corresponding SOURCE_CONCEPT_ID and DRUG_SOURCE_VALUE and a DRUG_CONCEPT_ID of 0. The Drug Concept with the most detailed content of information is preferred during the mapping process. These are indicated in the CONCEPT_CLASS_ID field of the Concept and are recorded in the following order of precedence: 'Branded Pack', 'Clinical Pack', 'Branded Drug', 'Clinical Drug', 'Branded Drug Component', 'Clinical Drug Component', 'Branded Drug Form', 'Clinical Drug Form', and only if no other information is available 'Ingredient'. Note: If only the drug class is known, the DRUG_CONCEPT_ID field should contain 0. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Drug&standardConcept=Standard&page=1&pageSize=15&query=).",No,Yes,CONCEPT,CONCEPT_ID,Drug,,
DRUG_EXPOSURE,drug_exposure_start_date,Yes,date,Use this date to determine the start date of the drug record.,"Valid entries include a start date of a prescription, the date a prescription was filled, or the date on which a Drug administration was recorded. It is a valid ETL choice to use the date the drug was ordered as the DRUG_EXPOSURE_START_DATE.",No,No,,,,,
DRUG_EXPOSURE,drug_exposure_start_datetime,No,datetime,,"This is not required, though it is in v6. If a source does not specify datetime the convention is to set the time to midnight (00:00:0000)",No,No,,,,,
DRUG_EXPOSURE,drug_exposure_end_date,Yes,date,The DRUG_EXPOSURE_END_DATE denotes the day the drug exposure ended for the patient.,"If this information is not explicitly available in the data, infer the end date using the following methods:<br><br> 1. Start first with duration or days supply using the calculation drug start date + days supply -1 day. 2. Use quantity divided by daily dose that you may obtain from the sig or a source field (or assumed daily dose of 1) for solid, indivisibile, drug products. If quantity represents ingredient amount, quantity divided by daily dose * concentration (from drug_strength) drug concept id tells you the dose form. 3. If it is an administration record, set drug end date equal to drug start date. If the record is a written prescription then set end date to start date + 29. If the record is a mail-order prescription set end date to start date + 89. The end date must be equal to or greater than the start date. Ibuprofen 20mg/mL oral solution concept tells us this is oral solution. Calculate duration as quantity (200 example) * daily dose (5mL) /concentration (20mg/mL) 200*5/20 = 50 days. [Examples by dose form](https://ohdsi.github.io/CommonDataModel/drug_dose.html)",No,No,,,,,
DRUG_EXPOSURE,drug_exposure_end_datetime,No,datetime,,"This is not required, though it is in v6. If a source does not specify datetime the convention is to set the time to midnight (00:00:0000)",No,No,,,,,
DRUG_EXPOSURE,verbatim_end_date,No,date,"This is the end date of the drug exposure as it appears in the source data, if it is given",Put the end date or discontinuation date as it appears from the source data or leave blank if unavailable.,No,No,,,,,
DRUG_EXPOSURE,drug_type_concept_id,Yes,integer,"You can use the TYPE_CONCEPT_ID to delineate between prescriptions written vs. prescriptions dispensed vs. medication history vs. patient-reported exposure, etc.","Choose the drug_type_concept_id that best represents the provenance of the record, for example whether it came from a record of a prescription written or physician administered drug. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Type+Concept&standardConcept=Standard&page=1&pageSize=15&query=).",No,Yes,CONCEPT,CONCEPT_ID,Type Concept,,
DRUG_EXPOSURE,stop_reason,No,varchar(20),"The reason a person stopped a medication as it is represented in the source. Reasons include regimen completed, changed, removed, etc. This field will be retired in v6.0.",This information is often not populated in source data and it is a valid etl choice to leave it blank if the information does not exist.,No,No,,,,,
DRUG_EXPOSURE,refills,No,integer,This is only filled in when the record is coming from a prescription written this field is meant to represent intended refills at time of the prescription.,,No,No,,,,,
DRUG_EXPOSURE,quantity,No,float,,"To find the dose form of a drug the RELATIONSHIP table can be used where the relationship_id is 'Has dose form'. If liquid, quantity stands for the total amount dispensed or ordered of ingredient in the units given by the drug_strength table. If the unit from the source data does not align with the unit in the DRUG_STRENGTH table the quantity should be converted to the correct unit given in DRUG_STRENGTH. For clinical drugs with fixed dose forms (tablets etc.) the quantity is the number of units/tablets/capsules prescribed or dispensed (can be partial, but then only 1/2 or 1/3, not 0.01). Clinical drugs with divisible dose forms (injections) the quantity is the amount of ingredient the patient got. For example, if the injection is 2mg/mL but the patient got 80mL then quantity is reported as 160.
Quantified clinical drugs with divisible dose forms (prefilled syringes), the quantity is the amount of ingredient similar to clinical drugs. Please see [how to calculate drug dose](https://ohdsi.github.io/CommonDataModel/drug_dose.html) for more information.
",No,No,,,,,
DRUG_EXPOSURE,days_supply,No,integer,,Days supply of the drug. This should be the verbatim days_supply as given on the prescription. If the drug is physician administered use duration end date if given or set to 1 as default if duration is not available.,No,No,,,,,
DRUG_EXPOSURE,sig,No,varchar(MAX),This is the verbatim instruction for the drug as written by the provider.,"Put the written out instructions for the drug as it is verbatim in the source, if available.",No,No,,,,,
DRUG_EXPOSURE,route_concept_id,No,integer,,The standard CONCEPT_ID that the ROUTE_SOURCE_VALUE maps to in the route domain.,No,Yes,CONCEPT,CONCEPT_ID,Route,,
DRUG_EXPOSURE,lot_number,No,varchar(50),,,No,No,,,,,
DRUG_EXPOSURE,provider_id,No,integer,"The Provider associated with drug record, e.g. the provider who wrote the prescription or the provider who administered the drug.","The ETL may need to make a choice as to which PROVIDER_ID to put here. Based on what is available this may or may not be different than the provider associated with the overall VISIT_OCCURRENCE record, for example the ordering vs administering physician on an EHR record.",No,Yes,PROVIDER,PROVIDER_ID,,,
DRUG_EXPOSURE,visit_occurrence_id,No,integer,"The Visit during which the drug was prescribed, administered or dispensed.",To populate this field drug exposures must be explicitly initiated in the visit.,No,Yes,VISIT_OCCURRENCE,VISIT_OCCURRENCE_ID,,,
DRUG_EXPOSURE,visit_detail_id,No,integer,"The VISIT_DETAIL record during which the drug exposure occurred. For example, if the person was in the ICU at the time of the drug administration the VISIT_OCCURRENCE record would reflect the overall hospital stay and the VISIT_DETAIL record would reflect the ICU stay during the hospital visit.",Same rules apply as for the VISIT_OCCURRENCE_ID.,No,Yes,VISIT_DETAIL,VISIT_DETAIL_ID,,,
DRUG_EXPOSURE,drug_source_value,No,varchar(50),"This field houses the verbatim value from the source data representing the drug exposure that occurred. For example, this could be an NDC or Gemscript code.",This code is mapped to a Standard Drug Concept in the Standardized Vocabularies and the original code is stored here for reference.,No,No,,,,,
DRUG_EXPOSURE,drug_source_concept_id,No,integer,"This is the concept representing the drug source value and may not necessarily be standard. This field is discouraged from use in analysis because it is not required to contain Standard Concepts that are used across the OHDSI community, and should only be used when Standard Concepts do not adequately represent the source detail for the Drug necessary for a given analytic use case. Consider using DRUG_CONCEPT_ID instead to enable standardized analytics that can be consistent across the network.",If the DRUG_SOURCE_VALUE is coded in the source data using an OMOP supported vocabulary put the concept id representing the source value here.,No,Yes,CONCEPT,CONCEPT_ID,,,
DRUG_EXPOSURE,route_source_value,No,varchar(50),This field houses the verbatim value from the source data representing the drug route.,This information may be called something different in the source data but the field is meant to contain a value indicating when and how a drug was given to a patient. This source value is mapped to a standard concept which is stored in the ROUTE_CONCEPT_ID field.,No,No,,,,,
DRUG_EXPOSURE,dose_unit_source_value,No,varchar(50),This field houses the verbatim value from the source data representing the dose unit of the drug given.,This information may be called something different in the source data but the field is meant to contain a value indicating the unit of dosage of drug given to the patient. This is an older column and will be deprecated in an upcoming version.,No,No,,,,,
PROCEDURE_OCCURRENCE,procedure_occurrence_id,Yes,integer,The unique key given to a procedure record for a person. Refer to the ETL for how duplicate procedures during the same visit were handled.,"Each instance of a procedure occurrence in the source data should be assigned this unique key. In some cases, a person can have multiple records of the same procedure within the same visit. It is valid to keep these duplicates and assign them individual, unique, PROCEDURE_OCCURRENCE_IDs, though it is up to the ETL how they should be handled.",Yes,No,,,,,
PROCEDURE_OCCURRENCE,person_id,Yes,integer,The PERSON_ID of the PERSON for whom the procedure is recorded. This may be a system generated code.,,No,Yes,PERSON,PERSON_ID,,,
PROCEDURE_OCCURRENCE,procedure_concept_id,Yes,integer,"The PROCEDURE_CONCEPT_ID field is recommended for primary use in analyses, and must be used for network studies. This is the standard concept mapped from the source value which represents a procedure","The CONCEPT_ID that the PROCEDURE_SOURCE_VALUE maps to. Only records whose source values map to standard concepts with a domain of ""Procedure"" should go in this table. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Procedure&standardConcept=Standard&page=1&pageSize=15&query=).",No,Yes,CONCEPT,CONCEPT_ID,Procedure,,
PROCEDURE_OCCURRENCE,procedure_date,Yes,date,Use this date to determine the date the procedure occurred.,"If a procedure lasts more than a day, then it should be recorded as a separate record for each day the procedure occurred, this logic is in lieu of the procedure_end_date, which will be added in a future version of the CDM.",No,No,,,,,
PROCEDURE_OCCURRENCE,procedure_datetime,No,datetime,,"This is not required, though it is in v6. If a source does not specify datetime the convention is to set the time to midnight (00:00:0000)",No,No,,,,,
PROCEDURE_OCCURRENCE,procedure_type_concept_id,Yes,integer,"This field can be used to determine the provenance of the Procedure record, as in whether the procedure was from an EHR system, insurance claim, registry, or other sources.","Choose the PROCEDURE_TYPE_CONCEPT_ID that best represents the provenance of the record, for example whether it came from an EHR record or billing claim. If a procedure is recorded as an EHR encounter, the PROCEDURE_TYPE_CONCEPT would be 'EHR encounter record'. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Type+Concept&standardConcept=Standard&page=1&pageSize=15&query=).",No,Yes,CONCEPT,CONCEPT_ID,Type Concept,,
PROCEDURE_OCCURRENCE,modifier_concept_id,No,integer,The modifiers are intended to give additional information about the procedure but as of now the vocabulary is under review.,"It is up to the ETL to choose how to map modifiers if they exist in source data. These concepts are typically distinguished by 'Modifier' concept classes (e.g., 'CPT4 Modifier' as part of the 'CPT4' vocabulary). If there is more than one modifier on a record, one should be chosen that pertains to the procedure rather than provider. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?conceptClass=CPT4+Modifier&conceptClass=HCPCS+Modifier&vocabulary=CPT4&vocabulary=HCPCS&standardConcept=Standard&page=1&pageSize=15&query=).",No,Yes,CONCEPT,CONCEPT_ID,,,
PROCEDURE_OCCURRENCE,quantity,No,integer,"If the quantity value is omitted, a single procedure is assumed.","If a Procedure has a quantity of '0' in the source, this should default to '1' in the ETL. If there is a record in the source it can be assumed the exposure occurred at least once",No,No,,,,,
PROCEDURE_OCCURRENCE,provider_id,No,integer,"The provider associated with the procedure record, e.g. the provider who performed the Procedure.","The ETL may need to make a choice as to which PROVIDER_ID to put here. Based on what is available this may or may not be different than the provider associated with the overall VISIT_OCCURRENCE record, for example the admitting vs attending physician on an EHR record.",No,No,PROVIDER,PROVIDER_ID,,,
PROCEDURE_OCCURRENCE,visit_occurrence_id,No,integer,The visit during which the procedure occurred.,"Depending on the structure of the source data, this may have to be determined based on dates. If a PROCEDURE_DATE occurs within the start and end date of a Visit it is a valid ETL choice to choose the VISIT_OCCURRENCE_ID from the Visit that subsumes it, even if not explicitly stated in the data. While not required, an attempt should be made to locate the VISIT_OCCURRENCE_ID of the PROCEDURE_OCCURRENCE record.",No,No,VISIT_OCCURRENCE,VISIT_OCCURRENCE_ID,,,
PROCEDURE_OCCURRENCE,visit_detail_id,No,integer,"The VISIT_DETAIL record during which the Procedure occurred. For example, if the Person was in the ICU at the time of the Procedure the VISIT_OCCURRENCE record would reflect the overall hospital stay and the VISIT_DETAIL record would reflect the ICU stay during the hospital visit.",Same rules apply as for the VISIT_OCCURRENCE_ID.,No,No,VISIT_DETAIL,VISIT_DETAIL_ID,,,
PROCEDURE_OCCURRENCE,procedure_source_value,No,varchar(50),"This field houses the verbatim value from the source data representing the procedure that occurred. For example, this could be an CPT4 or OPCS4 code.",Use this value to look up the source concept id and then map the source concept id to a standard concept id.,No,No,,,,,
PROCEDURE_OCCURRENCE,procedure_source_concept_id,No,integer,"This is the concept representing the procedure source value and may not necessarily be standard. This field is discouraged from use in analysis because it is not required to contain Standard Concepts that are used across the OHDSI community, and should only be used when Standard Concepts do not adequately represent the source detail for the Procedure necessary for a given analytic use case. Consider using PROCEDURE_CONCEPT_ID instead to enable standardized analytics that can be consistent across the network.",If the PROCEDURE_SOURCE_VALUE is coded in the source data using an OMOP supported vocabulary put the concept id representing the source value here.,No,No,CONCEPT,CONCEPT_ID,,,
PROCEDURE_OCCURRENCE,modifier_source_value,No,varchar(50),,The original modifier code from the source is stored here for reference.,No,No,,,,,
PROCEDURE_OCCURRENCE,procedure_status_source_value,No,varchar(50),This field houses the verbatim value from the source data representing the procedure status (primary or secondary).,"This information may be called something different in the source data but the field is meant to contain a value indicating whether the procedure was the primary reason for performing a surgical operation, infusion, etc. This source value is mapped to a standard concept which is stored in the PROCEDURE_STATUS_CONCEPT_ID field.",,,,,,,
PROCEDURE_OCCURRENCE,procedure_status_concept_id,Yes,integer,"This concept represents if the procedure was the primary reason for the surgical operation, infusion, etc . ",Choose the Concept in the Procedure Status domain that best represents the status ( [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Condition+Status&standardConcept=Standard&page=1&pageSize=15&query=).,,,,,,,
DEVICE_EXPOSURE,device_exposure_id,Yes,integer,The unique key given to records a person's exposure to a foreign physical object or instrument.,Each instance of an exposure to a foreign object or device present in the source data should be assigned this unique key. ,Yes,No,,,,,
DEVICE_EXPOSURE,person_id,Yes,integer,,,No,Yes,PERSON,PERSON_ID,,,
DEVICE_EXPOSURE,device_concept_id,Yes,integer,"The DEVICE_CONCEPT_ID field is recommended for primary use in analyses, and must be used for network studies. This is the standard concept mapped from the source concept id which represents a foreign object or instrument the person was exposed to. ",The CONCEPT_ID that the DEVICE_SOURCE_VALUE maps to. ,No,Yes,CONCEPT,CONCEPT_ID,Device,,
DEVICE_EXPOSURE,device_exposure_start_date,Yes,date,Use this date to determine the start date of the device record.,"Valid entries include a start date of a procedure to implant a device, the date of a prescription for a device, or the date of device administration. ",No,No,,,,,
DEVICE_EXPOSURE,device_exposure_start_datetime,No,datetime,,"This is not required, though it is in v6. If a source does not specify datetime the convention is to set the time to midnight (00:00:0000)",No,No,,,,,
DEVICE_EXPOSURE,device_exposure_end_date,No,date,"The DEVICE_EXPOSURE_END_DATE denotes the day the device exposure ended for the patient, if given.",Put the end date or discontinuation date as it appears from the source data or leave blank if unavailable.,No,No,,,,,
DEVICE_EXPOSURE,device_exposure_end_datetime,No,datetime,,If a source does not specify datetime the convention is to set the time to midnight (00:00:0000),No,No,,,,,
DEVICE_EXPOSURE,device_type_concept_id,Yes,integer,"You can use the TYPE_CONCEPT_ID to denote the provenance of the record, as in whether the record is from administrative claims or EHR. ","Choose the drug_type_concept_id that best represents the provenance of the record, for example whether it came from a record of a prescription written or physician administered drug. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Type+Concept&standardConcept=Standard&page=1&pageSize=15&query=).",No,Yes,CONCEPT,CONCEPT_ID,Type Concept,,
DEVICE_EXPOSURE,unique_device_id,No,varchar(255),"This is the Unique Device Identification (UDI-DI) number for devices regulated by the FDA, if given. ","For medical devices that are regulated by the FDA, a Unique Device Identification (UDI) is provided if available in the data source and is recorded in the UNIQUE_DEVICE_ID field.",No,No,,,,,
DEVICE_EXPOSURE,production_id,No,varchar(255),This is the Production Identifier (UDI-PI) portion of the Unique Device Identification.,,,,,,,,
DEVICE_EXPOSURE,quantity,No,integer,,,No,No,,,,,
DEVICE_EXPOSURE,provider_id,No,integer,"The Provider associated with device record, e.g. the provider who wrote the prescription or the provider who implanted the device.",The ETL may need to make a choice as to which PROVIDER_ID to put here. Based on what is available this may or may not be different than the provider associated with the overall VISIT_OCCURRENCE record.,No,Yes,PROVIDER,PROVIDER_ID,,,
DEVICE_EXPOSURE,visit_occurrence_id,No,integer,The Visit during which the device was prescribed or given.,To populate this field device exposures must be explicitly initiated in the visit.,No,Yes,VISIT_OCCURRENCE,VISIT_OCCURRENCE_ID,,,
DEVICE_EXPOSURE,visit_detail_id,No,integer,The Visit Detail during which the device was prescribed or given.,To populate this field device exposures must be explicitly initiated in the visit detail record.,No,Yes,VISIT_DETAIL,VISIT_DETAIL_ID,,,
DEVICE_EXPOSURE,device_source_value,No,varchar(50),"This field houses the verbatim value from the source data representing the device exposure that occurred. For example, this could be an NDC or Gemscript code.",This code is mapped to a Standard Device Concept in the Standardized Vocabularies and the original code is stored here for reference.,No,No,,,,,
DEVICE_EXPOSURE,device_source_concept_id,No,integer,"This is the concept representing the device source value and may not necessarily be standard. This field is discouraged from use in analysis because it is not required to contain Standard Concepts that are used across the OHDSI community, and should only be used when Standard Concepts do not adequately represent the source detail for the Device necessary for a given analytic use case. Consider using DEVICE_CONCEPT_ID instead to enable standardized analytics that can be consistent across the network.",If the DEVICE_SOURCE_VALUE is coded in the source data using an OMOP supported vocabulary put the concept id representing the source value here.,No,Yes,CONCEPT,CONCEPT_ID,,,
DEVICE_EXPOSURE,unit_concept_id,No,integer,UNIT_SOURCE_VALUES should be mapped to a Standard Concept in the Unit domain that best represents the unit as given in the source data. ,"There is no standardization requirement for units associated with DEVICE_CONCEPT_IDs, however, it is the responsibility of the ETL to choose the most plausible unit. If there is no unit associated with a Device record, set to NULL.",,,,,,,
DEVICE_EXPOSURE,unit_source_value,No,varchar(50),"This field houses the verbatim value from the source data representing the unit of the Device. For example, blood transfusions are considered devices and can be given in mL quantities. ","This code is mapped to a Standard Condition Concept in the Standardized Vocabularies and the original code is stored here for reference. Using the blood transfusion example, blood transfusion is represented by the DEVICE_CONCEPT_ID and the unit (mL) would be housed in the UNIT_SOURCE_VALUE and mapped to a standard concept in the unit domain. ",,,,,,,
DEVICE_EXPOSURE,unit_source_concept_id,No,integer,"This is the concept representing the UNIT_SOURCE_VALUE and may not necessarily be standard. This field is discouraged from use in analysis because it is not required to contain Standard Concepts that are used across the OHDSI community, and should only be used when Standard Concepts do not adequately represent the source detail for the Unit necessary for a given analytic use case. Consider using UNIT_CONCEPT_ID instead to enable standardized analytics that can be consistent across the network.",If the UNIT_SOURCE_VALUE is coded in the source data using an OMOP supported vocabulary put the concept id representing the source value here. ,,,,,,,
MEASUREMENT,measurement_id,Yes,integer,The unique key given to a Measurement record for a Person. Refer to the ETL for how duplicate Measurements during the same Visit were handled.,"Each instance of a measurement present in the source data should be assigned this unique key. In some cases, a person can have multiple records of the same measurement within the same visit. It is valid to keep these duplicates and assign them individual, unique, MEASUREMENT_IDs, though it is up to the ETL how they should be handled.",Yes,No,,,,,
MEASUREMENT,person_id,Yes,integer,The PERSON_ID of the Person for whom the Measurement is recorded. This may be a system generated code.,,No,Yes,PERSON,PERSON_ID,,,
MEASUREMENT,measurement_concept_id,Yes,integer,"The MEASUREMENT_CONCEPT_ID field is recommended for primary use in analyses, and must be used for network studies.","The CONCEPT_ID that the MEASUREMENT_SOURCE_CONCEPT_ID maps to. Only records whose SOURCE_CONCEPT_IDs map to Standard Concepts with a domain of ""Measurement"" should go in this table.",No,Yes,CONCEPT,CONCEPT_ID,Measurement,,
MEASUREMENT,measurement_date,Yes,date,Use this date to determine the date of the measurement.,"If there are multiple dates in the source data associated with a record such as order_date, draw_date, and result_date, choose the one that is closest to the date the sample was drawn from the patient.",No,No,,,,,
MEASUREMENT,measurement_datetime,No,datetime,,"This is not required, though it is in v6. If a source does not specify datetime the convention is to set the time to midnight (00:00:0000)",No,No,,,,,
MEASUREMENT,measurement_time,No,varchar(10),,This is present for backwards compatibility and will be deprecated in an upcoming version.,No,No,,,,,
MEASUREMENT,measurement_type_concept_id,Yes,integer,"This field can be used to determine the provenance of the Measurement record, as in whether the measurement was from an EHR system, insurance claim, registry, or other sources.","Choose the MEASUREMENT_TYPE_CONCEPT_ID that best represents the provenance of the record, for example whether it came from an EHR record or billing claim. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Type+Concept&standardConcept=Standard&page=1&pageSize=15&query=).",No,Yes,CONCEPT,CONCEPT_ID,Type Concept,,
MEASUREMENT,operator_concept_id,No,integer,"The meaning of Concept [4172703](https://athena.ohdsi.org/search-terms/terms/4172703) for '=' is identical to omission of a OPERATOR_CONCEPT_ID value. Since the use of this field is rare, it's important when devising analyses to not to forget testing for the content of this field for values different from =.","Operators are <, <=, =, >=, > and these concepts belong to the 'Meas Value Operator' domain. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Meas+Value+Operator&standardConcept=Standard&page=1&pageSize=15&query=).",No,Yes,CONCEPT,CONCEPT_ID,,,
MEASUREMENT,value_as_number,No,float,"This is the numerical value of the Result of the Measurement, if available. Note that measurements such as blood pressures will be split into their component parts i.e. one record for systolic, one record for diastolic.","If there is a negative value coming from the source, set the VALUE_AS_NUMBER to NULL, with the exception of the following Measurements (listed as LOINC codes):<br>- [1925-7](https://athena.ohdsi.org/search-terms/terms/3003396) Base excess in Arterial blood by calculation - [1927-3](https://athena.ohdsi.org/search-terms/terms/3002032) Base excess in Venous blood by calculation - [8632-2](https://athena.ohdsi.org/search-terms/terms/3006277) QRS-Axis - [11555-0](https://athena.ohdsi.org/search-terms/terms/3012501) Base excess in Blood by calculation - [1926-5](https://athena.ohdsi.org/search-terms/terms/3003129) Base excess in Capillary blood by calculation - [28638-5](https://athena.ohdsi.org/search-terms/terms/3004959) Base excess in Arterial cord blood by calculation [28639-3](https://athena.ohdsi.org/search-terms/terms/3007435) Base excess in Venous cord blood by calculation",No,No,,,,,
MEASUREMENT,value_as_concept_id,No,integer,If the raw data gives a categorial result for measurements those values are captured and mapped to standard concepts in the 'Meas Value' domain.,"If the raw data provides categorial results as well as continuous results for measurements, it is a valid ETL choice to preserve both values. The continuous value should go in the VALUE_AS_NUMBER field and the categorical value should be mapped to a standard concept in the 'Meas Value' domain and put in the VALUE_AS_CONCEPT_ID field. This is also the destination for the 'Maps to value' relationship.",No,Yes,CONCEPT,CONCEPT_ID,,,
MEASUREMENT,unit_concept_id,No,integer,"There is currently no recommended unit for individual measurements, i.e. it is not mandatory to represent Hemoglobin a1C measurements as a percentage. UNIT_SOURCE_VALUES should be mapped to a Standard Concept in the Unit domain that best represents the unit as given in the source data.","There is no standardization requirement for units associated with MEASUREMENT_CONCEPT_IDs, however, it is the responsibility of the ETL to choose the most plausible unit.",No,Yes,CONCEPT,CONCEPT_ID,Unit,,
MEASUREMENT,range_low,No,float,Ranges have the same unit as the VALUE_AS_NUMBER. These ranges are provided by the source and should remain NULL if not given.,If reference ranges for upper and lower limit of normal as provided (typically by a laboratory) these are stored in the RANGE_HIGH and RANGE_LOW fields. This should be set to NULL if not provided.,No,No,,,,,
MEASUREMENT,range_high,No,float,Ranges have the same unit as the VALUE_AS_NUMBER. These ranges are provided by the source and should remain NULL if not given.,If reference ranges for upper and lower limit of normal as provided (typically by a laboratory) these are stored in the RANGE_HIGH and RANGE_LOW fields. This should be set to NULL if not provided.,No,No,,,,,
MEASUREMENT,provider_id,No,integer,"The provider associated with measurement record, e.g. the provider who ordered the test or the provider who recorded the result.",The ETL may need to make a choice as to which PROVIDER_ID to put here. Based on what is available this may or may not be different than the provider associated with the overall VISIT_OCCURRENCE record. For example the admitting vs attending physician on an EHR record.,No,Yes,PROVIDER,PROVIDER_ID,,,
MEASUREMENT,visit_occurrence_id,No,integer,The visit during which the Measurement occurred.,"Depending on the structure of the source data, this may have to be determined based on dates. If a MEASUREMENT_DATE occurs within the start and end date of a Visit it is a valid ETL choice to choose the VISIT_OCCURRENCE_ID from the visit that subsumes it, even if not explicitly stated in the data. While not required, an attempt should be made to locate the VISIT_OCCURRENCE_ID of the measurement record. If a measurement is related to a visit explicitly in the source data, it is possible that the result date of the Measurement falls outside of the bounds of the Visit dates.",No,Yes,VISIT_OCCURRENCE,VISIT_OCCURRENCE_ID,,,
MEASUREMENT,visit_detail_id,No,integer,"The VISIT_DETAIL record during which the Measurement occurred. For example, if the Person was in the ICU at the time the VISIT_OCCURRENCE record would reflect the overall hospital stay and the VISIT_DETAIL record would reflect the ICU stay during the hospital visit.",Same rules apply as for the VISIT_OCCURRENCE_ID.,No,Yes,VISIT_DETAIL,VISIT_DETAIL_ID,,,
MEASUREMENT,measurement_source_value,No,varchar(50),"This field houses the verbatim value from the source data representing the Measurement that occurred. For example, this could be an ICD10 or Read code.",This code is mapped to a Standard Measurement Concept in the Standardized Vocabularies and the original code is stored here for reference.,No,No,,,,,
MEASUREMENT,measurement_source_concept_id,No,integer,"This is the concept representing the MEASUREMENT_SOURCE_VALUE and may not necessarily be standard. This field is discouraged from use in analysis because it is not required to contain Standard Concepts that are used across the OHDSI community, and should only be used when Standard Concepts do not adequately represent the source detail for the Measurement necessary for a given analytic use case. Consider using MEASUREMENT_CONCEPT_ID instead to enable standardized analytics that can be consistent across the network.",If the MEASUREMENT_SOURCE_VALUE is coded in the source data using an OMOP supported vocabulary put the concept id representing the source value here.,No,Yes,CONCEPT,CONCEPT_ID,,,
MEASUREMENT,unit_source_value,No,varchar(50),This field houses the verbatim value from the source data representing the unit of the Measurement that occurred. ,This code is mapped to a Standard Condition Concept in the Standardized Vocabularies and the original code is stored here for reference.,No,No,,,,,
MEASUREMENT,value_source_value,No,varchar(50),This field houses the verbatim result value of the Measurement from the source data . ,"If both a continuous and categorical result are given in the source data such that both VALUE_AS_NUMBER and VALUE_AS_CONCEPT_ID are both included, store the verbatim value that was mapped to VALUE_AS_CONCEPT_ID here.",No,No,,,,,
OBSERVATION,observation_id,Yes,integer,The unique key given to an Observation record for a Person. Refer to the ETL for how duplicate Observations during the same Visit were handled.,Each instance of an observation present in the source data should be assigned this unique key. ,Yes,No,,,,,
OBSERVATION,person_id,Yes,integer,The PERSON_ID of the Person for whom the Observation is recorded. This may be a system generated code.,,No,Yes,PERSON,PERSON_ID,,,
OBSERVATION,observation_concept_id,Yes,integer,"The OBSERVATION_CONCEPT_ID field is recommended for primary use in analyses, and must be used for network studies.","The CONCEPT_ID that the OBSERVATION_SOURCE_CONCEPT_ID maps to. There is no specified domain that the Concepts in this table must adhere to. The only rule is that records with Concepts in the Condition, Procedure, Drug, Measurement, or Device domains MUST go to the corresponding table. ",No,Yes,CONCEPT,CONCEPT_ID,,,
OBSERVATION,observation_date,Yes,date,"The date of the Observation. Depending on what the Observation represents this could be the date of a lab test, the date of a survey, or the date a patient's family history was taken. ",For some observations the ETL may need to make a choice as to which date to choose.,No,No,,,,,
OBSERVATION,observation_datetime,No,datetime,,If no time is given set to midnight (00:00:00).,No,No,,,,,
OBSERVATION,observation_type_concept_id,Yes,integer,"This field can be used to determine the provenance of the Observation record, as in whether the measurement was from an EHR system, insurance claim, registry, or other sources.","Choose the OBSERVATION_TYPE_CONCEPT_ID that best represents the provenance of the record, for example whether it came from an EHR record or billing claim. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Type+Concept&standardConcept=Standard&page=1&pageSize=15&query=).",No,Yes,CONCEPT,CONCEPT_ID,Type Concept,,
OBSERVATION,value_as_number,No,float,"This is the numerical value of the Result of the Observation, if applicable and available. It is not expected that all Observations will have numeric results, rather, this field is here to house values should they exist. ",,No,No,,,,,
OBSERVATION,value_as_string,No,varchar(60),"This is the categorical value of the Result of the Observation, if applicable and available. ",,No,No,,,,,
OBSERVATION,value_as_concept_id,No,Integer,"It is possible that some records destined for the Observation table have two clinical ideas represented in one source code. This is common with ICD10 codes that describe a family history of some Condition, for example. In OMOP the Vocabulary breaks these two clinical ideas into two codes; one becomes the OBSERVATION_CONCEPT_ID and the other becomes the VALUE_AS_CONCEPT_ID. It is important when using the Observation table to keep this possibility in mind and to examine the VALUE_AS_CONCEPT_ID field for relevant information. ","Note that the value of VALUE_AS_CONCEPT_ID may be provided through mapping from a source Concept which contains the content of the Observation. In those situations, the CONCEPT_RELATIONSHIP table in addition to the 'Maps to' record contains a second record with the relationship_id set to 'Maps to value'. For example, ICD10 [Z82.4](https://athena.ohdsi.org/search-terms/terms/45581076) 'Family history of ischaemic heart disease and other diseases of the circulatory system' has a 'Maps to' relationship to [4167217](https://athena.ohdsi.org/search-terms/terms/4167217) 'Family history of clinical finding' as well as a 'Maps to value' record to [134057](https://athena.ohdsi.org/search-terms/terms/134057) 'Disorder of cardiovascular system'.",No,Yes,CONCEPT,CONCEPT_ID,,,
OBSERVATION,qualifier_concept_id,No,integer,"This field contains all attributes specifying the clinical fact further, such as as degrees, severities, drug-drug interaction alerts etc.","Use your best judgement as to what Concepts to use here and if they are necessary to accurately represent the clinical record. There is no restriction on the domain of these Concepts, they just need to be Standard.",No,Yes,CONCEPT,CONCEPT_ID,,,
OBSERVATION,unit_concept_id,No,integer,There is currently no recommended unit for individual observation concepts. UNIT_SOURCE_VALUES should be mapped to a Standard Concept in the Unit domain that best represents the unit as given in the source data.,"There is no standardization requirement for units associated with OBSERVATION_CONCEPT_IDs, however, it is the responsibility of the ETL to choose the most plausible unit.",No,Yes,CONCEPT,CONCEPT_ID,Unit,,
OBSERVATION,provider_id,No,integer,"The provider associated with the observation record, e.g. the provider who ordered the test or the provider who recorded the result.",The ETL may need to make a choice as to which PROVIDER_ID to put here. Based on what is available this may or may not be different than the provider associated with the overall VISIT_OCCURRENCE record. For example the admitting vs attending physician on an EHR record.,No,Yes,PROVIDER,PROVIDER_ID,,,
OBSERVATION,visit_occurrence_id,No,integer,The visit during which the Observation occurred.,"Depending on the structure of the source data, this may have to be determined based on dates. If an OBSERVATION_DATE occurs within the start and end date of a Visit it is a valid ETL choice to choose the VISIT_OCCURRENCE_ID from the visit that subsumes it, even if not explicitly stated in the data. While not required, an attempt should be made to locate the VISIT_OCCURRENCE_ID of the observation record. If an observation is related to a visit explicitly in the source data, it is possible that the result date of the Observation falls outside of the bounds of the Visit dates.",No,Yes,VISIT_OCCURRENCE,VISIT_OCCURRENCE_ID,,,
OBSERVATION,visit_detail_id,No,integer,"The VISIT_DETAIL record during which the Observation occurred. For example, if the Person was in the ICU at the time the VISIT_OCCURRENCE record would reflect the overall hospital stay and the VISIT_DETAIL record would reflect the ICU stay during the hospital visit.",Same rules apply as for the VISIT_OCCURRENCE_ID.,No,Yes,VISIT_DETAIL,VISIT_DETAIL_ID,,,
OBSERVATION,observation_source_value,No,varchar(50),"This field houses the verbatim value from the source data representing the Observation that occurred. For example, this could be an ICD10 or Read code.",This code is mapped to a Standard Concept in the Standardized Vocabularies and the original code is stored here for reference.,No,No,,,,,
OBSERVATION,observation_source_concept_id,No,integer,"This is the concept representing the OBSERVATION_SOURCE_VALUE and may not necessarily be standard. This field is discouraged from use in analysis because it is not required to contain Standard Concepts that are used across the OHDSI community, and should only be used when Standard Concepts do not adequately represent the source detail for the Observation necessary for a given analytic use case. Consider using OBSERVATION_CONCEPT_ID instead to enable standardized analytics that can be consistent across the network.",If the OBSERVATION_SOURCE_VALUE is coded in the source data using an OMOP supported vocabulary put the concept id representing the source value here.,No,Yes,CONCEPT,CONCEPT_ID,,,
OBSERVATION,unit_source_value,No,varchar(50),This field houses the verbatim value from the source data representing the unit of the Observation that occurred. ,This code is mapped to a Standard Condition Concept in the Standardized Vocabularies and the original code is stored here for reference.,No,No,,,,,
OBSERVATION,qualifier_source_value,No,varchar(50),This field houses the verbatim value from the source data representing the qualifier of the Observation that occurred. ,This code is mapped to a Standard Condition Concept in the Standardized Vocabularies and the original code is stored here for reference.,No,No,,,,,
OBSERVATION,value_source_value,No,varchar(50),This field houses the verbatim result value of the Observation from the source data. Do not get confused with the Observation_source_value which captures source value of the observation mapped to observation_concept_id. This field is the observation result value from the source.," If the observation_source_value was a question, for example, or an observation that requires a result then this field is the answer/ result from the source data. Store the verbatim value that represents the result of the observation_source_value. ",No,No,,,,,
DEATH,person_id,Yes,integer,,,No,Yes,PERSON,PERSON_ID,,,
DEATH,death_date,Yes,date,The date the person was deceased.,"If the precise date include day or month is not known or not allowed, December is used as the default month, and the last day of the month the default day.",No,No,,,,,
DEATH,death_datetime,No,datetime,,If not available set time to midnight (00:00:00),No,No,,,,,
DEATH,death_type_concept_id,No,integer,"This is the provenance of the death record, i.e., where it came from. It is possible that an administrative claims database would source death information from a government file so do not assume the Death Type is the same as the Visit Type, etc.",Use the type concept that be reflects the source of the death record. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Type+Concept&standardConcept=Standard&page=1&pageSize=15&query=).,No,Yes,CONCEPT,CONCEPT_ID,Type Concept,,
DEATH,cause_concept_id,No,integer,"This is the Standard Concept representing the Person's cause of death, if available.","There is no specified domain for this concept, just choose the Standard Concept Id that best represents the person's cause of death.",No,Yes,CONCEPT,CONCEPT_ID,,,
DEATH,cause_source_value,No,varchar(50),,"If available, put the source code representing the cause of death here. ",No,No,,,,,
DEATH,cause_source_concept_id,No,integer,,If the cause of death was coded using a Vocabulary present in the OMOP Vocabularies put the CONCEPT_ID representing the cause of death here.,No,Yes,CONCEPT,CONCEPT_ID,,,
NOTE,note_id,Yes,integer,A unique identifier for each note.,,Yes,No,,,,,
NOTE,person_id,Yes,integer,,,No,Yes,PERSON,PERSON_ID,,,
NOTE,note_date,Yes,date,The date the note was recorded.,,No,No,,,,,
NOTE,note_datetime,No,datetime,,If time is not given set the time to midnight.,No,No,,,,,
NOTE,note_type_concept_id,Yes,integer,The provenance of the note. Most likely this will be EHR. ,"Put the source system of the note, as in EHR record. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?standardConcept=Standard&domain=Type+Concept&page=1&pageSize=15&query=).",No,Yes,CONCEPT,CONCEPT_ID,Type Concept,,
",No,No,,,,,
DRUG_EXPOSURE,days_supply,No,integer,,Days supply of the drug. This should be the verbatim days_supply as given on the prescription. If the drug is physician administered use duration end date if given or set to 1 as default if duration is not available.,No,No,,,,,
DRUG_EXPOSURE,sig,No,varchar(MAX),This is the verbatim instruction for the drug as written by the provider.,"Put the written out instructions for the drug as it is verbatim in the source, if available.",No,No,,,,,
DRUG_EXPOSURE,route_concept_id,No,integer,,The standard CONCEPT_ID that the ROUTE_SOURCE_VALUE maps to in the route domain.,No,Yes,CONCEPT,CONCEPT_ID,Route,,
DRUG_EXPOSURE,lot_number,No,varchar(50),,,No,No,,,,,
DRUG_EXPOSURE,provider_id,No,integer,"The Provider associated with drug record, e.g. the provider who wrote the prescription or the provider who administered the drug.","The ETL may need to make a choice as to which PROVIDER_ID to put here. Based on what is available this may or may not be different than the provider associated with the overall VISIT_OCCURRENCE record, for example the ordering vs administering physician on an EHR record.",No,Yes,PROVIDER,PROVIDER_ID,,,
DRUG_EXPOSURE,visit_occurrence_id,No,integer,"The Visit during which the drug was prescribed, administered or dispensed.",To populate this field drug exposures must be explicitly initiated in the visit.,No,Yes,VISIT_OCCURRENCE,VISIT_OCCURRENCE_ID,,,
DRUG_EXPOSURE,visit_detail_id,No,integer,"The VISIT_DETAIL record during which the drug exposure occurred. For example, if the person was in the ICU at the time of the drug administration the VISIT_OCCURRENCE record would reflect the overall hospital stay and the VISIT_DETAIL record would reflect the ICU stay during the hospital visit.",Same rules apply as for the VISIT_OCCURRENCE_ID.,No,Yes,VISIT_DETAIL,VISIT_DETAIL_ID,,,
DRUG_EXPOSURE,drug_source_value,No,varchar(50),"This field houses the verbatim value from the source data representing the drug exposure that occurred. For example, this could be an NDC or Gemscript code.",This code is mapped to a Standard Drug Concept in the Standardized Vocabularies and the original code is stored here for reference.,No,No,,,,,
DRUG_EXPOSURE,drug_source_concept_id,No,integer,"This is the concept representing the drug source value and may not necessarily be standard. This field is discouraged from use in analysis because it is not required to contain Standard Concepts that are used across the OHDSI community, and should only be used when Standard Concepts do not adequately represent the source detail for the Drug necessary for a given analytic use case. Consider using DRUG_CONCEPT_ID instead to enable standardized analytics that can be consistent across the network.",If the DRUG_SOURCE_VALUE is coded in the source data using an OMOP supported vocabulary put the concept id representing the source value here.,No,Yes,CONCEPT,CONCEPT_ID,,,
DRUG_EXPOSURE,route_source_value,No,varchar(50),This field houses the verbatim value from the source data representing the drug route.,This information may be called something different in the source data but the field is meant to contain a value indicating when and how a drug was given to a patient. This source value is mapped to a standard concept which is stored in the ROUTE_CONCEPT_ID field.,No,No,,,,,
DRUG_EXPOSURE,dose_unit_source_value,No,varchar(50),This field houses the verbatim value from the source data representing the dose unit of the drug given.,This information may be called something different in the source data but the field is meant to contain a value indicating the unit of dosage of drug given to the patient. This is an older column and will be deprecated in an upcoming version.,No,No,,,,,
PROCEDURE_OCCURRENCE,procedure_occurrence_id,Yes,integer,The unique key given to a procedure record for a person. Refer to the ETL for how duplicate procedures during the same visit were handled.,"Each instance of a procedure occurrence in the source data should be assigned this unique key. In some cases, a person can have multiple records of the same procedure within the same visit. It is valid to keep these duplicates and assign them individual, unique, PROCEDURE_OCCURRENCE_IDs, though it is up to the ETL how they should be handled.",Yes,No,,,,,
PROCEDURE_OCCURRENCE,person_id,Yes,integer,The PERSON_ID of the PERSON for whom the procedure is recorded. This may be a system generated code.,,No,Yes,PERSON,PERSON_ID,,,
PROCEDURE_OCCURRENCE,procedure_concept_id,Yes,integer,"The PROCEDURE_CONCEPT_ID field is recommended for primary use in analyses, and must be used for network studies. This is the standard concept mapped from the source value which represents a procedure","The CONCEPT_ID that the PROCEDURE_SOURCE_VALUE maps to. Only records whose source values map to standard concepts with a domain of ""Procedure"" should go in this table. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Procedure&standardConcept=Standard&page=1&pageSize=15&query=).",No,Yes,CONCEPT,CONCEPT_ID,Procedure,,
PROCEDURE_OCCURRENCE,procedure_date,Yes,date,Use this date to determine the date the procedure occurred.,"If a procedure lasts more than a day, then it should be recorded as a separate record for each day the procedure occurred, this logic is in lieu of the procedure_end_date, which will be added in a future version of the CDM.",No,No,,,,,
PROCEDURE_OCCURRENCE,procedure_datetime,No,datetime,,"This is not required, though it is in v6. If a source does not specify datetime the convention is to set the time to midnight (00:00:0000)",No,No,,,,,
PROCEDURE_OCCURRENCE,procedure_type_concept_id,Yes,integer,"This field can be used to determine the provenance of the Procedure record, as in whether the procedure was from an EHR system, insurance claim, registry, or other sources.","Choose the PROCEDURE_TYPE_CONCEPT_ID that best represents the provenance of the record, for example whether it came from an EHR record or billing claim. If a procedure is recorded as an EHR encounter, the PROCEDURE_TYPE_CONCEPT would be 'EHR encounter record'. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Type+Concept&standardConcept=Standard&page=1&pageSize=15&query=).",No,Yes,CONCEPT,CONCEPT_ID,Type Concept,,
PROCEDURE_OCCURRENCE,modifier_concept_id,No,integer,The modifiers are intended to give additional information about the procedure but as of now the vocabulary is under review.,"It is up to the ETL to choose how to map modifiers if they exist in source data. These concepts are typically distinguished by 'Modifier' concept classes (e.g., 'CPT4 Modifier' as part of the 'CPT4' vocabulary). If there is more than one modifier on a record, one should be chosen that pertains to the procedure rather than provider. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?conceptClass=CPT4+Modifier&conceptClass=HCPCS+Modifier&vocabulary=CPT4&vocabulary=HCPCS&standardConcept=Standard&page=1&pageSize=15&query=).",No,Yes,CONCEPT,CONCEPT_ID,,,
PROCEDURE_OCCURRENCE,quantity,No,integer,"If the quantity value is omitted, a single procedure is assumed.","If a Procedure has a quantity of '0' in the source, this should default to '1' in the ETL. If there is a record in the source it can be assumed the exposure occurred at least once",No,No,,,,,
PROCEDURE_OCCURRENCE,provider_id,No,integer,"The provider associated with the procedure record, e.g. the provider who performed the Procedure.","The ETL may need to make a choice as to which PROVIDER_ID to put here. Based on what is available this may or may not be different than the provider associated with the overall VISIT_OCCURRENCE record, for example the admitting vs attending physician on an EHR record.",No,No,PROVIDER,PROVIDER_ID,,,
PROCEDURE_OCCURRENCE,visit_occurrence_id,No,integer,The visit during which the procedure occurred.,"Depending on the structure of the source data, this may have to be determined based on dates. If a PROCEDURE_DATE occurs within the start and end date of a Visit it is a valid ETL choice to choose the VISIT_OCCURRENCE_ID from the Visit that subsumes it, even if not explicitly stated in the data. While not required, an attempt should be made to locate the VISIT_OCCURRENCE_ID of the PROCEDURE_OCCURRENCE record.",No,No,VISIT_OCCURRENCE,VISIT_OCCURRENCE_ID,,,
PROCEDURE_OCCURRENCE,visit_detail_id,No,integer,"The VISIT_DETAIL record during which the Procedure occurred. For example, if the Person was in the ICU at the time of the Procedure the VISIT_OCCURRENCE record would reflect the overall hospital stay and the VISIT_DETAIL record would reflect the ICU stay during the hospital visit.",Same rules apply as for the VISIT_OCCURRENCE_ID.,No,No,VISIT_DETAIL,VISIT_DETAIL_ID,,,
PROCEDURE_OCCURRENCE,procedure_source_value,No,varchar(50),"This field houses the verbatim value from the source data representing the procedure that occurred. For example, this could be an CPT4 or OPCS4 code.",Use this value to look up the source concept id and then map the source concept id to a standard concept id.,No,No,,,,,
PROCEDURE_OCCURRENCE,procedure_source_concept_id,No,integer,"This is the concept representing the procedure source value and may not necessarily be standard. This field is discouraged from use in analysis because it is not required to contain Standard Concepts that are used across the OHDSI community, and should only be used when Standard Concepts do not adequately represent the source detail for the Procedure necessary for a given analytic use case. Consider using PROCEDURE_CONCEPT_ID instead to enable standardized analytics that can be consistent across the network.",If the PROCEDURE_SOURCE_VALUE is coded in the source data using an OMOP supported vocabulary put the concept id representing the source value here.,No,No,CONCEPT,CONCEPT_ID,,,
PROCEDURE_OCCURRENCE,modifier_source_value,No,varchar(50),,The original modifier code from the source is stored here for reference.,No,No,,,,,
PROCEDURE_OCCURRENCE,procedure_status_source_value,No,varchar(50),This field houses the verbatim value from the source data representing the procedure status (primary or secondary).,"This information may be called something different in the source data but the field is meant to contain a value indicating whether the procedure was the primary reason for performing a surgical operation, infusion, etc. This source value is mapped to a standard concept which is stored in the PROCEDURE_STATUS_CONCEPT_ID field.",,,,,,,
PROCEDURE_OCCURRENCE,procedure_status_concept_id,Yes,integer,"This concept represents if the procedure was the primary reason for the surgical operation, infusion, etc . ",Choose the Concept in the Procedure Status domain that best represents the status ( [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Condition+Status&standardConcept=Standard&page=1&pageSize=15&query=).,,,,,,,
DEVICE_EXPOSURE,device_exposure_id,Yes,integer,The unique key given to records a person's exposure to a foreign physical object or instrument.,Each instance of an exposure to a foreign object or device present in the source data should be assigned this unique key. ,Yes,No,,,,,
DEVICE_EXPOSURE,person_id,Yes,integer,,,No,Yes,PERSON,PERSON_ID,,,
DEVICE_EXPOSURE,device_concept_id,Yes,integer,"The DEVICE_CONCEPT_ID field is recommended for primary use in analyses, and must be used for network studies. This is the standard concept mapped from the source concept id which represents a foreign object or instrument the person was exposed to. ",The CONCEPT_ID that the DEVICE_SOURCE_VALUE maps to. ,No,Yes,CONCEPT,CONCEPT_ID,Device,,
DEVICE_EXPOSURE,device_exposure_start_date,Yes,date,Use this date to determine the start date of the device record.,"Valid entries include a start date of a procedure to implant a device, the date of a prescription for a device, or the date of device administration. ",No,No,,,,,
DEVICE_EXPOSURE,device_exposure_start_datetime,No,datetime,,"This is not required, though it is in v6. If a source does not specify datetime the convention is to set the time to midnight (00:00:0000)",No,No,,,,,
DEVICE_EXPOSURE,device_exposure_end_date,No,date,"The DEVICE_EXPOSURE_END_DATE denotes the day the device exposure ended for the patient, if given.",Put the end date or discontinuation date as it appears from the source data or leave blank if unavailable.,No,No,,,,,
DEVICE_EXPOSURE,device_exposure_end_datetime,No,datetime,,If a source does not specify datetime the convention is to set the time to midnight (00:00:0000),No,No,,,,,
DEVICE_EXPOSURE,device_type_concept_id,Yes,integer,"You can use the TYPE_CONCEPT_ID to denote the provenance of the record, as in whether the record is from administrative claims or EHR. ","Choose the drug_type_concept_id that best represents the provenance of the record, for example whether it came from a record of a prescription written or physician administered drug. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Type+Concept&standardConcept=Standard&page=1&pageSize=15&query=).",No,Yes,CONCEPT,CONCEPT_ID,Type Concept,,
DEVICE_EXPOSURE,unique_device_id,No,varchar(255),"This is the Unique Device Identification (UDI-DI) number for devices regulated by the FDA, if given. ","For medical devices that are regulated by the FDA, a Unique Device Identification (UDI) is provided if available in the data source and is recorded in the UNIQUE_DEVICE_ID field.",No,No,,,,,
DEVICE_EXPOSURE,production_id,No,varchar(255),This is the Production Identifier (UDI-PI) portion of the Unique Device Identification.,,,,,,,,
DEVICE_EXPOSURE,quantity,No,integer,,,No,No,,,,,
DEVICE_EXPOSURE,provider_id,No,integer,"The Provider associated with device record, e.g. the provider who wrote the prescription or the provider who implanted the device.",The ETL may need to make a choice as to which PROVIDER_ID to put here. Based on what is available this may or may not be different than the provider associated with the overall VISIT_OCCURRENCE record.,No,Yes,PROVIDER,PROVIDER_ID,,,
DEVICE_EXPOSURE,visit_occurrence_id,No,integer,The Visit during which the device was prescribed or given.,To populate this field device exposures must be explicitly initiated in the visit.,No,Yes,VISIT_OCCURRENCE,VISIT_OCCURRENCE_ID,,,
DEVICE_EXPOSURE,visit_detail_id,No,integer,The Visit Detail during which the device was prescribed or given.,To populate this field device exposures must be explicitly initiated in the visit detail record.,No,Yes,VISIT_DETAIL,VISIT_DETAIL_ID,,,
DEVICE_EXPOSURE,device_source_value,No,varchar(50),"This field houses the verbatim value from the source data representing the device exposure that occurred. For example, this could be an NDC or Gemscript code.",This code is mapped to a Standard Device Concept in the Standardized Vocabularies and the original code is stored here for reference.,No,No,,,,,
DEVICE_EXPOSURE,device_source_concept_id,No,integer,"This is the concept representing the device source value and may not necessarily be standard. This field is discouraged from use in analysis because it is not required to contain Standard Concepts that are used across the OHDSI community, and should only be used when Standard Concepts do not adequately represent the source detail for the Device necessary for a given analytic use case. Consider using DEVICE_CONCEPT_ID instead to enable standardized analytics that can be consistent across the network.",If the DEVICE_SOURCE_VALUE is coded in the source data using an OMOP supported vocabulary put the concept id representing the source value here.,No,Yes,CONCEPT,CONCEPT_ID,,,
DEVICE_EXPOSURE,unit_concept_id,No,integer,UNIT_SOURCE_VALUES should be mapped to a Standard Concept in the Unit domain that best represents the unit as given in the source data. ,"There is no standardization requirement for units associated with DEVICE_CONCEPT_IDs, however, it is the responsibility of the ETL to choose the most plausible unit. If there is no unit associated with a Device record, set to NULL.",,,,,,,
DEVICE_EXPOSURE,unit_source_value,No,varchar(50),"This field houses the verbatim value from the source data representing the unit of the Device. For example, blood transfusions are considered devices and can be given in mL quantities. ","This code is mapped to a Standard Condition Concept in the Standardized Vocabularies and the original code is stored here for reference. Using the blood transfusion example, blood transfusion is represented by the DEVICE_CONCEPT_ID and the unit (mL) would be housed in the UNIT_SOURCE_VALUE and mapped to a standard concept in the unit domain. ",,,,,,,
DEVICE_EXPOSURE,unit_source_concept_id,No,integer,"This is the concept representing the UNIT_SOURCE_VALUE and may not necessarily be standard. This field is discouraged from use in analysis because it is not required to contain Standard Concepts that are used across the OHDSI community, and should only be used when Standard Concepts do not adequately represent the source detail for the Unit necessary for a given analytic use case. Consider using UNIT_CONCEPT_ID instead to enable standardized analytics that can be consistent across the network.",If the UNIT_SOURCE_VALUE is coded in the source data using an OMOP supported vocabulary put the concept id representing the source value here. ,,,,,,,
MEASUREMENT,measurement_id,Yes,integer,The unique key given to a Measurement record for a Person. Refer to the ETL for how duplicate Measurements during the same Visit were handled.,"Each instance of a measurement present in the source data should be assigned this unique key. In some cases, a person can have multiple records of the same measurement within the same visit. It is valid to keep these duplicates and assign them individual, unique, MEASUREMENT_IDs, though it is up to the ETL how they should be handled.",Yes,No,,,,,
MEASUREMENT,person_id,Yes,integer,The PERSON_ID of the Person for whom the Measurement is recorded. This may be a system generated code.,,No,Yes,PERSON,PERSON_ID,,,
MEASUREMENT,measurement_concept_id,Yes,integer,"The MEASUREMENT_CONCEPT_ID field is recommended for primary use in analyses, and must be used for network studies.","The CONCEPT_ID that the MEASUREMENT_SOURCE_CONCEPT_ID maps to. Only records whose SOURCE_CONCEPT_IDs map to Standard Concepts with a domain of ""Measurement"" should go in this table.",No,Yes,CONCEPT,CONCEPT_ID,Measurement,,
MEASUREMENT,measurement_date,Yes,date,Use this date to determine the date of the measurement.,"If there are multiple dates in the source data associated with a record such as order_date, draw_date, and result_date, choose the one that is closest to the date the sample was drawn from the patient.",No,No,,,,,
MEASUREMENT,measurement_datetime,No,datetime,,"This is not required, though it is in v6. If a source does not specify datetime the convention is to set the time to midnight (00:00:0000)",No,No,,,,,
MEASUREMENT,measurement_time,No,varchar(10),,This is present for backwards compatibility and will be deprecated in an upcoming version.,No,No,,,,,
MEASUREMENT,measurement_type_concept_id,Yes,integer,"This field can be used to determine the provenance of the Measurement record, as in whether the measurement was from an EHR system, insurance claim, registry, or other sources.","Choose the MEASUREMENT_TYPE_CONCEPT_ID that best represents the provenance of the record, for example whether it came from an EHR record or billing claim. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Type+Concept&standardConcept=Standard&page=1&pageSize=15&query=).",No,Yes,CONCEPT,CONCEPT_ID,Type Concept,,
MEASUREMENT,operator_concept_id,No,integer,"The meaning of Concept [4172703](https://athena.ohdsi.org/search-terms/terms/4172703) for '=' is identical to omission of a OPERATOR_CONCEPT_ID value. Since the use of this field is rare, it's important when devising analyses to not to forget testing for the content of this field for values different from =.","Operators are <, <=, =, >=, > and these concepts belong to the 'Meas Value Operator' domain. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Meas+Value+Operator&standardConcept=Standard&page=1&pageSize=15&query=).",No,Yes,CONCEPT,CONCEPT_ID,,,
MEASUREMENT,value_as_number,No,float,"This is the numerical value of the Result of the Measurement, if available. Note that measurements such as blood pressures will be split into their component parts i.e. one record for systolic, one record for diastolic.","If there is a negative value coming from the source, set the VALUE_AS_NUMBER to NULL, with the exception of the following Measurements (listed as LOINC codes):<br>- [1925-7](https://athena.ohdsi.org/search-terms/terms/3003396) Base excess in Arterial blood by calculation - [1927-3](https://athena.ohdsi.org/search-terms/terms/3002032) Base excess in Venous blood by calculation - [8632-2](https://athena.ohdsi.org/search-terms/terms/3006277) QRS-Axis - [11555-0](https://athena.ohdsi.org/search-terms/terms/3012501) Base excess in Blood by calculation - [1926-5](https://athena.ohdsi.org/search-terms/terms/3003129) Base excess in Capillary blood by calculation - [28638-5](https://athena.ohdsi.org/search-terms/terms/3004959) Base excess in Arterial cord blood by calculation [28639-3](https://athena.ohdsi.org/search-terms/terms/3007435) Base excess in Venous cord blood by calculation",No,No,,,,,
MEASUREMENT,value_as_concept_id,No,integer,If the raw data gives a categorial result for measurements those values are captured and mapped to standard concepts in the 'Meas Value' domain.,"If the raw data provides categorial results as well as continuous results for measurements, it is a valid ETL choice to preserve both values. The continuous value should go in the VALUE_AS_NUMBER field and the categorical value should be mapped to a standard concept in the 'Meas Value' domain and put in the VALUE_AS_CONCEPT_ID field. This is also the destination for the 'Maps to value' relationship.",No,Yes,CONCEPT,CONCEPT_ID,,,
MEASUREMENT,unit_concept_id,No,integer,"There is currently no recommended unit for individual measurements, i.e. it is not mandatory to represent Hemoglobin a1C measurements as a percentage. UNIT_SOURCE_VALUES should be mapped to a Standard Concept in the Unit domain that best represents the unit as given in the source data.","There is no standardization requirement for units associated with MEASUREMENT_CONCEPT_IDs, however, it is the responsibility of the ETL to choose the most plausible unit.",No,Yes,CONCEPT,CONCEPT_ID,Unit,,
MEASUREMENT,range_low,No,float,Ranges have the same unit as the VALUE_AS_NUMBER. These ranges are provided by the source and should remain NULL if not given.,If reference ranges for upper and lower limit of normal as provided (typically by a laboratory) these are stored in the RANGE_HIGH and RANGE_LOW fields. This should be set to NULL if not provided.,No,No,,,,,
MEASUREMENT,range_high,No,float,Ranges have the same unit as the VALUE_AS_NUMBER. These ranges are provided by the source and should remain NULL if not given.,If reference ranges for upper and lower limit of normal as provided (typically by a laboratory) these are stored in the RANGE_HIGH and RANGE_LOW fields. This should be set to NULL if not provided.,No,No,,,,,
MEASUREMENT,provider_id,No,integer,"The provider associated with measurement record, e.g. the provider who ordered the test or the provider who recorded the result.",The ETL may need to make a choice as to which PROVIDER_ID to put here. Based on what is available this may or may not be different than the provider associated with the overall VISIT_OCCURRENCE record. For example the admitting vs attending physician on an EHR record.,No,Yes,PROVIDER,PROVIDER_ID,,,
MEASUREMENT,visit_occurrence_id,No,integer,The visit during which the Measurement occurred.,"Depending on the structure of the source data, this may have to be determined based on dates. If a MEASUREMENT_DATE occurs within the start and end date of a Visit it is a valid ETL choice to choose the VISIT_OCCURRENCE_ID from the visit that subsumes it, even if not explicitly stated in the data. While not required, an attempt should be made to locate the VISIT_OCCURRENCE_ID of the measurement record. If a measurement is related to a visit explicitly in the source data, it is possible that the result date of the Measurement falls outside of the bounds of the Visit dates.",No,Yes,VISIT_OCCURRENCE,VISIT_OCCURRENCE_ID,,,
MEASUREMENT,visit_detail_id,No,integer,"The VISIT_DETAIL record during which the Measurement occurred. For example, if the Person was in the ICU at the time the VISIT_OCCURRENCE record would reflect the overall hospital stay and the VISIT_DETAIL record would reflect the ICU stay during the hospital visit.",Same rules apply as for the VISIT_OCCURRENCE_ID.,No,Yes,VISIT_DETAIL,VISIT_DETAIL_ID,,,
MEASUREMENT,measurement_source_value,No,varchar(50),"This field houses the verbatim value from the source data representing the Measurement that occurred. For example, this could be an ICD10 or Read code.",This code is mapped to a Standard Measurement Concept in the Standardized Vocabularies and the original code is stored here for reference.,No,No,,,,,
MEASUREMENT,measurement_source_concept_id,No,integer,"This is the concept representing the MEASUREMENT_SOURCE_VALUE and may not necessarily be standard. This field is discouraged from use in analysis because it is not required to contain Standard Concepts that are used across the OHDSI community, and should only be used when Standard Concepts do not adequately represent the source detail for the Measurement necessary for a given analytic use case. Consider using MEASUREMENT_CONCEPT_ID instead to enable standardized analytics that can be consistent across the network.",If the MEASUREMENT_SOURCE_VALUE is coded in the source data using an OMOP supported vocabulary put the concept id representing the source value here.,No,Yes,CONCEPT,CONCEPT_ID,,,
MEASUREMENT,unit_source_value,No,varchar(50),This field houses the verbatim value from the source data representing the unit of the Measurement that occurred. ,This code is mapped to a Standard Condition Concept in the Standardized Vocabularies and the original code is stored here for reference.,No,No,,,,,
MEASUREMENT,value_source_value,No,varchar(50),This field houses the verbatim result value of the Measurement from the source data . ,"If both a continuous and categorical result are given in the source data such that both VALUE_AS_NUMBER and VALUE_AS_CONCEPT_ID are both included, store the verbatim value that was mapped to VALUE_AS_CONCEPT_ID here.",No,No,,,,,
OBSERVATION,observation_id,Yes,integer,The unique key given to an Observation record for a Person. Refer to the ETL for how duplicate Observations during the same Visit were handled.,Each instance of an observation present in the source data should be assigned this unique key. ,Yes,No,,,,,
OBSERVATION,person_id,Yes,integer,The PERSON_ID of the Person for whom the Observation is recorded. This may be a system generated code.,,No,Yes,PERSON,PERSON_ID,,,
OBSERVATION,observation_concept_id,Yes,integer,"The OBSERVATION_CONCEPT_ID field is recommended for primary use in analyses, and must be used for network studies.","The CONCEPT_ID that the OBSERVATION_SOURCE_CONCEPT_ID maps to. There is no specified domain that the Concepts in this table must adhere to. The only rule is that records with Concepts in the Condition, Procedure, Drug, Measurement, or Device domains MUST go to the corresponding table. ",No,Yes,CONCEPT,CONCEPT_ID,,,
OBSERVATION,observation_date,Yes,date,"The date of the Observation. Depending on what the Observation represents this could be the date of a lab test, the date of a survey, or the date a patient's family history was taken. ",For some observations the ETL may need to make a choice as to which date to choose.,No,No,,,,,
OBSERVATION,observation_datetime,No,datetime,,If no time is given set to midnight (00:00:00).,No,No,,,,,
OBSERVATION,observation_type_concept_id,Yes,integer,"This field can be used to determine the provenance of the Observation record, as in whether the measurement was from an EHR system, insurance claim, registry, or other sources.","Choose the OBSERVATION_TYPE_CONCEPT_ID that best represents the provenance of the record, for example whether it came from an EHR record or billing claim. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Type+Concept&standardConcept=Standard&page=1&pageSize=15&query=).",No,Yes,CONCEPT,CONCEPT_ID,Type Concept,,
OBSERVATION,value_as_number,No,float,"This is the numerical value of the Result of the Observation, if applicable and available. It is not expected that all Observations will have numeric results, rather, this field is here to house values should they exist. ",,No,No,,,,,
OBSERVATION,value_as_string,No,varchar(60),"This is the categorical value of the Result of the Observation, if applicable and available. ",,No,No,,,,,
OBSERVATION,value_as_concept_id,No,Integer,"It is possible that some records destined for the Observation table have two clinical ideas represented in one source code. This is common with ICD10 codes that describe a family history of some Condition, for example. In OMOP the Vocabulary breaks these two clinical ideas into two codes; one becomes the OBSERVATION_CONCEPT_ID and the other becomes the VALUE_AS_CONCEPT_ID. It is important when using the Observation table to keep this possibility in mind and to examine the VALUE_AS_CONCEPT_ID field for relevant information. ","Note that the value of VALUE_AS_CONCEPT_ID may be provided through mapping from a source Concept which contains the content of the Observation. In those situations, the CONCEPT_RELATIONSHIP table in addition to the 'Maps to' record contains a second record with the relationship_id set to 'Maps to value'. For example, ICD10 [Z82.4](https://athena.ohdsi.org/search-terms/terms/45581076) 'Family history of ischaemic heart disease and other diseases of the circulatory system' has a 'Maps to' relationship to [4167217](https://athena.ohdsi.org/search-terms/terms/4167217) 'Family history of clinical finding' as well as a 'Maps to value' record to [134057](https://athena.ohdsi.org/search-terms/terms/134057) 'Disorder of cardiovascular system'.",No,Yes,CONCEPT,CONCEPT_ID,,,
OBSERVATION,qualifier_concept_id,No,integer,"This field contains all attributes specifying the clinical fact further, such as as degrees, severities, drug-drug interaction alerts etc.","Use your best judgement as to what Concepts to use here and if they are necessary to accurately represent the clinical record. There is no restriction on the domain of these Concepts, they just need to be Standard.",No,Yes,CONCEPT,CONCEPT_ID,,,
OBSERVATION,unit_concept_id,No,integer,There is currently no recommended unit for individual observation concepts. UNIT_SOURCE_VALUES should be mapped to a Standard Concept in the Unit domain that best represents the unit as given in the source data.,"There is no standardization requirement for units associated with OBSERVATION_CONCEPT_IDs, however, it is the responsibility of the ETL to choose the most plausible unit.",No,Yes,CONCEPT,CONCEPT_ID,Unit,,
OBSERVATION,provider_id,No,integer,"The provider associated with the observation record, e.g. the provider who ordered the test or the provider who recorded the result.",The ETL may need to make a choice as to which PROVIDER_ID to put here. Based on what is available this may or may not be different than the provider associated with the overall VISIT_OCCURRENCE record. For example the admitting vs attending physician on an EHR record.,No,Yes,PROVIDER,PROVIDER_ID,,,
OBSERVATION,visit_occurrence_id,No,integer,The visit during which the Observation occurred.,"Depending on the structure of the source data, this may have to be determined based on dates. If an OBSERVATION_DATE occurs within the start and end date of a Visit it is a valid ETL choice to choose the VISIT_OCCURRENCE_ID from the visit that subsumes it, even if not explicitly stated in the data. While not required, an attempt should be made to locate the VISIT_OCCURRENCE_ID of the observation record. If an observation is related to a visit explicitly in the source data, it is possible that the result date of the Observation falls outside of the bounds of the Visit dates.",No,Yes,VISIT_OCCURRENCE,VISIT_OCCURRENCE_ID,,,
OBSERVATION,visit_detail_id,No,integer,"The VISIT_DETAIL record during which the Observation occurred. For example, if the Person was in the ICU at the time the VISIT_OCCURRENCE record would reflect the overall hospital stay and the VISIT_DETAIL record would reflect the ICU stay during the hospital visit.",Same rules apply as for the VISIT_OCCURRENCE_ID.,No,Yes,VISIT_DETAIL,VISIT_DETAIL_ID,,,
OBSERVATION,observation_source_value,No,varchar(50),"This field houses the verbatim value from the source data representing the Observation that occurred. For example, this could be an ICD10 or Read code.",This code is mapped to a Standard Concept in the Standardized Vocabularies and the original code is stored here for reference.,No,No,,,,,
OBSERVATION,observation_source_concept_id,No,integer,"This is the concept representing the OBSERVATION_SOURCE_VALUE and may not necessarily be standard. This field is discouraged from use in analysis because it is not required to contain Standard Concepts that are used across the OHDSI community, and should only be used when Standard Concepts do not adequately represent the source detail for the Observation necessary for a given analytic use case. Consider using OBSERVATION_CONCEPT_ID instead to enable standardized analytics that can be consistent across the network.",If the OBSERVATION_SOURCE_VALUE is coded in the source data using an OMOP supported vocabulary put the concept id representing the source value here.,No,Yes,CONCEPT,CONCEPT_ID,,,
OBSERVATION,unit_source_value,No,varchar(50),This field houses the verbatim value from the source data representing the unit of the Observation that occurred. ,This code is mapped to a Standard Condition Concept in the Standardized Vocabularies and the original code is stored here for reference.,No,No,,,,,
OBSERVATION,qualifier_source_value,No,varchar(50),This field houses the verbatim value from the source data representing the qualifier of the Observation that occurred. ,This code is mapped to a Standard Condition Concept in the Standardized Vocabularies and the original code is stored here for reference.,No,No,,,,,
OBSERVATION,value_source_value,No,varchar(50),This field houses the verbatim result value of the Observation from the source data. Do not get confused with the Observation_source_value which captures source value of the observation mapped to observation_concept_id. This field is the observation result value from the source.," If the observation_source_value was a question, for example, or an observation that requires a result then this field is the answer/ result from the source data. Store the verbatim value that represents the result of the observation_source_value. ",No,No,,,,,
DEATH,person_id,Yes,integer,,,No,Yes,PERSON,PERSON_ID,,,
DEATH,death_date,Yes,date,The date the person was deceased.,"If the precise date include day or month is not known or not allowed, December is used as the default month, and the last day of the month the default day.",No,No,,,,,
DEATH,death_datetime,No,datetime,,If not available set time to midnight (00:00:00),No,No,,,,,
DEATH,death_type_concept_id,No,integer,"This is the provenance of the death record, i.e., where it came from. It is possible that an administrative claims database would source death information from a government file so do not assume the Death Type is the same as the Visit Type, etc.",Use the type concept that be reflects the source of the death record. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Type+Concept&standardConcept=Standard&page=1&pageSize=15&query=).,No,Yes,CONCEPT,CONCEPT_ID,Type Concept,,
DEATH,cause_concept_id,No,integer,"This is the Standard Concept representing the Person's cause of death, if available.","There is no specified domain for this concept, just choose the Standard Concept Id that best represents the person's cause of death.",No,Yes,CONCEPT,CONCEPT_ID,,,
DEATH,cause_source_value,No,varchar(50),,"If available, put the source code representing the cause of death here. ",No,No,,,,,
DEATH,cause_source_concept_id,No,integer,,If the cause of death was coded using a Vocabulary present in the OMOP Vocabularies put the CONCEPT_ID representing the cause of death here.,No,Yes,CONCEPT,CONCEPT_ID,,,
NOTE,note_id,Yes,integer,A unique identifier for each note.,,Yes,No,,,,,
NOTE,person_id,Yes,integer,,,No,Yes,PERSON,PERSON_ID,,,
NOTE,note_date,Yes,date,The date the note was recorded.,,No,No,,,,,
NOTE,note_datetime,No,datetime,,If time is not given set the time to midnight.,No,No,,,,,
NOTE,note_type_concept_id,Yes,integer,The provenance of the note. Most likely this will be EHR. ,"Put the source system of the note, as in EHR record. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?standardConcept=Standard&domain=Type+Concept&page=1&pageSize=15&query=).",No,Yes,CONCEPT,CONCEPT_ID,Type Concept,,
NOTE,note_class_concept_id,Yes,integer,"A Standard Concept Id representing the HL7 LOINC
Document Type Vocabulary classification of the note.",Map the note classification to a Standard Concept. For more information see the ETL Conventions in the description of the NOTE table. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?standardConcept=Standard&conceptClass=Doc+Kind&conceptClass=Doc+Role&conceptClass=Doc+Setting&conceptClass=Doc+Subject+Matter&conceptClass=Doc+Type+of+Service&domain=Meas+Value&page=1&pageSize=15&query=). This Concept can alternatively be represented by concepts with the relationship 'Kind of (LOINC)' to [706391](https://athena.ohdsi.org/search-terms/terms/706391) (Note).,No,Yes,CONCEPT,CONCEPT_ID,,,
NOTE,note_title,No,varchar(250),The title of the note.,,No,No,,,,,
NOTE,note_text,Yes,varchar(MAX),The content of the note.,,No,No,,,,,
NOTE,encoding_concept_id,Yes,integer,This is the Concept representing the character encoding type. ,"Put the Concept Id that represents the encoding character type here. Currently the only option is UTF-8 ([32678](https://athena.ohdsi.org/search-terms/terms/32678)). It the note is encoded in any other type, like ASCII then put 0. ",No,Yes,CONCEPT,CONCEPT_ID,,,
NOTE,language_concept_id,Yes,integer,The language of the note. ,Use Concepts that are descendants of the concept [4182347](https://athena.ohdsi.org/search-terms/terms/4182347) (World Languages).,No,Yes,CONCEPT,CONCEPT_ID,,,
NOTE,provider_id,No,integer,The Provider who wrote the note.,The ETL may need to make a determination on which provider to put here.,No,Yes,PROVIDER,PROVIDER_ID,,,
NOTE,visit_occurrence_id,No,integer,The Visit during which the note was written. ,,No,Yes,VISIT_OCCURRENCE,VISIT_OCCURRENCE_ID,,,
NOTE,visit_detail_id,No,integer,The Visit Detail during which the note was written.,,No,Yes,VISIT_DETAIL,VISIT_DETAIL_ID,,,
NOTE,note_source_value,No,varchar(50),,The source value mapped to the NOTE_CLASS_CONCEPT_ID.,No,No,,,,,
NOTE_NLP,note_nlp_id,Yes,integer,A unique identifier for the NLP record.,,Yes,No,,,,,
NOTE_NLP,note_id,Yes,integer,This is the NOTE_ID for the NOTE record the NLP record is associated to.,,No,No,,,,,
NOTE_NLP,section_concept_id,No,integer,,"The SECTION_CONCEPT_ID should be used to represent the note section contained in the NOTE_NLP record. These concepts can be found as parts of document panels and are based on the type of note written, i.e. a discharge summary. These panels can be found as concepts with the relationship 'Subsumes' to CONCEPT_ID [45875957](https://athena.ohdsi.org/search-terms/terms/45875957).",No,Yes,CONCEPT,CONCEPT_ID,,,
NOTE_NLP,snippet,No,varchar(250),A small window of text surrounding the term,,No,No,,,,,
NOTE_NLP,offset,No,varchar(50),Character offset of the extracted term in the input note,,No,No,,,,,
NOTE_NLP,lexical_variant,Yes,varchar(250),Raw text extracted from the NLP tool.,,No,No,,,,,
NOTE_NLP,note_nlp_concept_id,No,integer,,,No,Yes,CONCEPT,CONCEPT_ID,,,
NOTE_NLP,note_nlp_source_concept_id,No,integer,,,No,Yes,CONCEPT,CONCEPT_ID,,,
NOTE_NLP,nlp_system,No,varchar(250),,Name and version of the NLP system that extracted the term. Useful for data provenance.,No,No,,,,,
NOTE_NLP,nlp_date,Yes,date,The date of the note processing.,,No,No,,,,,
NOTE_NLP,nlp_datetime,No,datetime,The date and time of the note processing.,,No,No,,,,,
Document Type Vocabulary classification of the note.",Map the note classification to a Standard Concept. For more information see the ETL Conventions in the description of the NOTE table. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?standardConcept=Standard&conceptClass=Doc+Kind&conceptClass=Doc+Role&conceptClass=Doc+Setting&conceptClass=Doc+Subject+Matter&conceptClass=Doc+Type+of+Service&domain=Meas+Value&page=1&pageSize=15&query=). This Concept can alternatively be represented by concepts with the relationship 'Kind of (LOINC)' to [706391](https://athena.ohdsi.org/search-terms/terms/706391) (Note).,No,Yes,CONCEPT,CONCEPT_ID,,,
NOTE,note_title,No,varchar(250),The title of the note.,,No,No,,,,,
NOTE,note_text,Yes,varchar(MAX),The content of the note.,,No,No,,,,,
NOTE,encoding_concept_id,Yes,integer,This is the Concept representing the character encoding type. ,"Put the Concept Id that represents the encoding character type here. Currently the only option is UTF-8 ([32678](https://athena.ohdsi.org/search-terms/terms/32678)). It the note is encoded in any other type, like ASCII then put 0. ",No,Yes,CONCEPT,CONCEPT_ID,,,
NOTE,language_concept_id,Yes,integer,The language of the note. ,Use Concepts that are descendants of the concept [4182347](https://athena.ohdsi.org/search-terms/terms/4182347) (World Languages).,No,Yes,CONCEPT,CONCEPT_ID,,,
NOTE,provider_id,No,integer,The Provider who wrote the note.,The ETL may need to make a determination on which provider to put here.,No,Yes,PROVIDER,PROVIDER_ID,,,
NOTE,visit_occurrence_id,No,integer,The Visit during which the note was written. ,,No,Yes,VISIT_OCCURRENCE,VISIT_OCCURRENCE_ID,,,
NOTE,visit_detail_id,No,integer,The Visit Detail during which the note was written.,,No,Yes,VISIT_DETAIL,VISIT_DETAIL_ID,,,
NOTE,note_source_value,No,varchar(50),,The source value mapped to the NOTE_CLASS_CONCEPT_ID.,No,No,,,,,
NOTE_NLP,note_nlp_id,Yes,integer,A unique identifier for the NLP record.,,Yes,No,,,,,
NOTE_NLP,note_id,Yes,integer,This is the NOTE_ID for the NOTE record the NLP record is associated to.,,No,No,,,,,
NOTE_NLP,section_concept_id,No,integer,,"The SECTION_CONCEPT_ID should be used to represent the note section contained in the NOTE_NLP record. These concepts can be found as parts of document panels and are based on the type of note written, i.e. a discharge summary. These panels can be found as concepts with the relationship 'Subsumes' to CONCEPT_ID [45875957](https://athena.ohdsi.org/search-terms/terms/45875957).",No,Yes,CONCEPT,CONCEPT_ID,,,
NOTE_NLP,snippet,No,varchar(250),A small window of text surrounding the term,,No,No,,,,,
NOTE_NLP,offset,No,varchar(50),Character offset of the extracted term in the input note,,No,No,,,,,
NOTE_NLP,lexical_variant,Yes,varchar(250),Raw text extracted from the NLP tool.,,No,No,,,,,
NOTE_NLP,note_nlp_concept_id,No,integer,,,No,Yes,CONCEPT,CONCEPT_ID,,,
NOTE_NLP,note_nlp_source_concept_id,No,integer,,,No,Yes,CONCEPT,CONCEPT_ID,,,
NOTE_NLP,nlp_system,No,varchar(250),,Name and version of the NLP system that extracted the term. Useful for data provenance.,No,No,,,,,
NOTE_NLP,nlp_date,Yes,date,The date of the note processing.,,No,No,,,,,
NOTE_NLP,nlp_datetime,No,datetime,The date and time of the note processing.,,No,No,,,,,
NOTE_NLP,term_exists,No,varchar(1),,"Term_exists is defined as a flag that indicates if the patient actually has or had the condition. Any of the following modifiers would make Term_exists false:
Negation = true
Subject = [anything other than the patient]
@ -225,303 +225,303 @@ Conditional = true/li>
Rule_out = true
Uncertain = very low certainty or any lower certainties
A complete lack of modifiers would make Term_exists true.
",No,No,,,,,
",No,No,,,,,
NOTE_NLP,term_temporal,No,varchar(50),,"Term_temporal is to indicate if a condition is present or just in the past. The following would be past:<br><br>
- History = true
- Concept_date = anything before the time of the report",No,No,,,,,
- Concept_date = anything before the time of the report",No,No,,,,,
NOTE_NLP,term_modifiers,No,varchar(2000),,"For the modifiers that are there, they would have to have these values:<br><br>
- Negation = false
- Subject = patient
- Conditional = false
- Rule_out = false
- Uncertain = true or high or moderate or even low (could argue about low). Term_modifiers will concatenate all modifiers for different types of entities (conditions, drugs, labs etc) into one string. Lab values will be saved as one of the modifiers. ",No,No,,,,,
SPECIMEN,specimen_id,Yes,integer,Unique identifier for each specimen.,,Yes,No,,,,,
SPECIMEN,person_id,Yes,integer,The person from whom the specimen is collected.,,No,Yes,PERSON,PERSON_ID,,,
SPECIMEN,specimen_concept_id,Yes,integer,,The standard CONCEPT_ID that the SPECIMEN_SOURCE_VALUE maps to in the specimen domain. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Specimen&standardConcept=Standard&page=1&pageSize=15&query=),No,Yes,CONCEPT,CONCEPT_ID,,,
SPECIMEN,specimen_type_concept_id,Yes,integer,,"Put the source of the specimen record, as in an EHR system. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?standardConcept=Standard&domain=Type+Concept&page=1&pageSize=15&query=).",No,Yes,CONCEPT,CONCEPT_ID,Type Concept,,
SPECIMEN,specimen_date,Yes,date,The date the specimen was collected.,,No,No,,,,,
SPECIMEN,specimen_datetime,No,datetime,,,No,No,,,,,
SPECIMEN,quantity,No,float,The amount of specimen collected from the person.,,No,No,,,,,
SPECIMEN,unit_concept_id,No,integer,The unit for the quantity of the specimen.,Map the UNIT_SOURCE_VALUE to a Standard Concept in the Unit domain. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Unit&standardConcept=Standard&page=1&pageSize=15&query=),No,Yes,CONCEPT,CONCEPT_ID,,,
SPECIMEN,anatomic_site_concept_id,No,integer,This is the site on the body where the specimen is from.,Map the ANATOMIC_SITE_SOURCE_VALUE to a Standard Concept in the Spec Anatomic Site domain. This should be coded at the lowest level of granularity [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?standardConcept=Standard&domain=Spec+Anatomic+Site&conceptClass=Body+Structure&page=4&pageSize=15&query=),No,Yes,CONCEPT,CONCEPT_ID,,,
SPECIMEN,disease_status_concept_id,No,integer,,,No,Yes,CONCEPT,CONCEPT_ID,,,
SPECIMEN,specimen_source_id,No,varchar(50),This is the identifier for the specimen from the source system. ,,No,No,,,,,
SPECIMEN,specimen_source_value,No,varchar(50),,,No,No,,,,,
SPECIMEN,unit_source_value,No,varchar(50),,"This unit for the quantity of the specimen, as represented in the source.",No,No,,,,,
SPECIMEN,anatomic_site_source_value,No,varchar(50),,"This is the site on the body where the specimen was taken from, as represented in the source.",No,No,,,,,
SPECIMEN,disease_status_source_value,No,varchar(50),,,No,No,,,,,
FACT_RELATIONSHIP,domain_concept_id_1,Yes,integer,,,No,Yes,CONCEPT,CONCEPT_ID,,,
FACT_RELATIONSHIP,fact_id_1,Yes,integer,,,No,No,,,,,
FACT_RELATIONSHIP,domain_concept_id_2,Yes,integer,,,No,Yes,CONCEPT,CONCEPT_ID,,,
FACT_RELATIONSHIP,fact_id_2,Yes,integer,,,No,No,,,,,
FACT_RELATIONSHIP,relationship_concept_id,Yes,integer,,,No,Yes,CONCEPT,CONCEPT_ID,,,
LOCATION,location_id,Yes,integer,The unique key given to a unique Location.,Each instance of a Location in the source data should be assigned this unique key.,Yes,No,,,,,
LOCATION,address_1,No,varchar(50),This is the first line of the address.,,No,No,,,,,
LOCATION,address_2,No,varchar(50),This is the second line of the address,,No,No,,,,,
LOCATION,city,No,varchar(50),,,No,No,,,,,
LOCATION,state,No,varchar(2),,,No,No,,,,,
LOCATION,zip,No,varchar(9),,"Zip codes are handled as strings of up to 9 characters length. For US addresses, these represent either a 3-digit abbreviated Zip code as provided by many sources for patient protection reasons, the full 5-digit Zip or the 9-digit (ZIP + 4) codes. Unless for specific reasons analytical methods should expect and utilize only the first 3 digits. For international addresses, different rules apply.",No,No,,,,,
LOCATION,county,No,varchar(20),,,No,No,,,,,
LOCATION,location_source_value,No,varchar(50),,"Put the verbatim value for the location here, as it shows up in the source. ",No,No,,,,,
LOCATION,country_concept_id,No,integer,The Concept Id representing the country. Values should conform to the [Geography](https://athena.ohdsi.org/search-terms/terms?domain=Geography&standardConcept=Standard&page=1&pageSize=15&query=&boosts) domain. ,,,,,,,,
LOCATION,country_source_value,No,varchar(80),The name of the country.,,,,,,,,
LOCATION,latitude,No,float,,Must be between -90 and 90.,,,,,,,
LOCATION,longitude,No,float,,Must be between -180 and 180.,,,,,,,
CARE_SITE,care_site_id,Yes,integer,,Assign an id to each unique combination of location_id and place_of_service_source_value,Yes,No,,,,,
CARE_SITE,care_site_name,No,varchar(255),The name of the care_site as it appears in the source data,,No,No,,,,,
CARE_SITE,place_of_service_concept_id,No,integer,"This is a high-level way of characterizing a Care Site. Typically, however, Care Sites can provide care in multiple settings (inpatient, outpatient, etc.) and this granularity should be reflected in the visit.","Choose the concept in the visit domain that best represents the setting in which healthcare is provided in the Care Site. If most visits in a Care Site are Inpatient, then the place_of_service_concept_id should represent Inpatient. If information is present about a unique Care Site (e.g. Pharmacy) then a Care Site record should be created. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Visit&standardConcept=Standard&page=2&pageSize=15&query=).",No,Yes,CONCEPT,CONCEPT_ID,,,
CARE_SITE,location_id,No,integer,The location_id from the LOCATION table representing the physical location of the care_site.,,No,Yes,LOCATION,LOCATION_ID,,,
CARE_SITE,care_site_source_value,No,varchar(50),The identifier of the care_site as it appears in the source data. This could be an identifier separate from the name of the care_site.,,No,No,,,,,
CARE_SITE,place_of_service_source_value,No,varchar(50),,Put the place of service of the care_site as it appears in the source data.,No,No,,,,,
PROVIDER,provider_id,Yes,integer,It is assumed that every provider with a different unique identifier is in fact a different person and should be treated independently.,"This identifier can be the original id from the source data provided it is an integer, otherwise it can be an autogenerated number.",Yes,No,,,,,
PROVIDER,provider_name,No,varchar(255),,"This field is not necessary as it is not necessary to have the actual identity of the Provider. Rather, the idea is to uniquely and anonymously identify providers of care across the database.",No,No,,,,,
PROVIDER,npi,No,varchar(20),This is the National Provider Number issued to health care providers in the US by the Centers for Medicare and Medicaid Services (CMS).,,No,No,,,,,
PROVIDER,dea,No,varchar(20),"This is the identifier issued by the DEA, a US federal agency, that allows a provider to write prescriptions for controlled substances.",,No,No,,,,,
PROVIDER,specialty_concept_id,No,integer,"This field either represents the most common specialty that occurs in the data or the most specific concept that represents all specialties listed, should the provider have more than one. This includes physician specialties such as internal medicine, emergency medicine, etc. and allied health professionals such as nurses, midwives, and pharmacists.","If a Provider has more than one Specialty, there are two options: 1. Choose a concept_id which is a common ancestor to the multiple specialties, or, 2. Choose the specialty that occurs most often for the provider. Concepts in this field should be Standard with a domain of Provider. [Accepted Concepts](http://athena.ohdsi.org/search-terms/terms?domain=Provider&standardConcept=Standard&page=1&pageSize=15&query=).",No,Yes,CONCEPT,CONCEPT_ID,,,
PROVIDER,care_site_id,No,integer,This is the CARE_SITE_ID for the location that the provider primarily practices in.,"If a Provider has more than one Care Site, the main or most often exerted CARE_SITE_ID should be recorded.",No,Yes,CARE_SITE,CARE_SITE_ID,,,
PROVIDER,year_of_birth,No,integer,,,No,No,,,,,
PROVIDER,gender_concept_id,No,integer,This field represents the recorded gender of the provider in the source data.,"If given, put a concept from the gender domain representing the recorded gender of the provider. [Accepted Concepts](http://athena.ohdsi.org/search-terms/terms?domain=Gender&standardConcept=Standard&page=1&pageSize=15&query=).",No,Yes,CONCEPT,CONCEPT_ID,Gender,,
PROVIDER,provider_source_value,No,varchar(50),Use this field to link back to providers in the source data. This is typically used for error checking of ETL logic.,Some use cases require the ability to link back to providers in the source data. This field allows for the storing of the provider identifier as it appears in the source.,No,No,,,,,
PROVIDER,specialty_source_value,No,varchar(50),"This is the kind of provider or specialty as it appears in the source data. This includes physician specialties such as internal medicine, emergency medicine, etc. and allied health professionals such as nurses, midwives, and pharmacists.",Put the kind of provider as it appears in the source data. This field is up to the discretion of the ETL-er as to whether this should be the coded value from the source or the text description of the lookup value.,No,No,,,,,
PROVIDER,specialty_source_concept_id,No,integer,This is often zero as many sites use proprietary codes to store physician speciality.,If the source data codes provider specialty in an OMOP supported vocabulary store the concept_id here.,No,Yes,CONCEPT,CONCEPT_ID,,,
PROVIDER,gender_source_value,No,varchar(50),This is provider's gender as it appears in the source data.,Put the provider's gender as it appears in the source data. This field is up to the discretion of the ETL-er as to whether this should be the coded value from the source or the text description of the lookup value.,No,No,,,,,
PROVIDER,gender_source_concept_id,No,integer,This is often zero as many sites use proprietary codes to store provider gender.,If the source data codes provider gender in an OMOP supported vocabulary store the concept_id here.,No,Yes,CONCEPT,CONCEPT_ID,,,
PAYER_PLAN_PERIOD,payer_plan_period_id,Yes,integer,"A unique identifier for each unique combination of a Person, Payer, Plan, and Period of time.",,Yes,Yes,PERSON,PERSON_ID,,,
PAYER_PLAN_PERIOD,person_id,Yes,integer,The Person covered by the Plan.,"A single Person can have multiple, overlapping, PAYER_PLAN_PERIOD records",No,Yes,PERSON,PERSON_ID,,,
PAYER_PLAN_PERIOD,payer_plan_period_start_date,Yes,date,Start date of Plan coverage.,,No,No,,,,,
PAYER_PLAN_PERIOD,payer_plan_period_end_date,Yes,date,End date of Plan coverage.,,No,No,,,,,
PAYER_PLAN_PERIOD,payer_concept_id,No,integer,This field represents the organization who reimburses the provider which administers care to the Person.,"Map the Payer directly to a standard CONCEPT_ID. If one does not exists please contact the vocabulary team. There is no global controlled vocabulary available for this information. The point is to stratify on this information and identify if Persons have the same payer, though the name of the Payer is not necessary. [Accepted Concepts](http://athena.ohdsi.org/search-terms/terms?domain=Payer&standardConcept=Standard&page=1&pageSize=15&query=).",No,Yes,CONCEPT,CONCEPT_ID,,,
PAYER_PLAN_PERIOD,payer_source_value,No,varchar(50),This is the Payer as it appears in the source data.,,No,No,,,,,
PAYER_PLAN_PERIOD,payer_source_concept_id,No,integer,,If the source data codes the Payer in an OMOP supported vocabulary store the concept_id here.,No,Yes,CONCEPT,CONCEPT_ID,,,
PAYER_PLAN_PERIOD,plan_concept_id,No,integer,This field represents the specific health benefit Plan the Person is enrolled in.,Map the Plan directly to a standard CONCEPT_ID. If one does not exists please contact the vocabulary team. There is no global controlled vocabulary available for this information. The point is to stratify on this information and identify if Persons have the same health benefit Plan though the name of the Plan is not necessary. [Accepted Concepts](http://athena.ohdsi.org/search-terms/terms?domain=Plan&standardConcept=Standard&page=1&pageSize=15&query=).,No,Yes,CONCEPT,CONCEPT_ID,,,
PAYER_PLAN_PERIOD,plan_source_value,No,varchar(50),This is the health benefit Plan of the Person as it appears in the source data.,,No,No,,,,,
PAYER_PLAN_PERIOD,plan_source_concept_id,No,integer,,If the source data codes the Plan in an OMOP supported vocabulary store the concept_id here.,No,Yes,CONCEPT,CONCEPT_ID,,,
PAYER_PLAN_PERIOD,sponsor_concept_id,No,integer,"This field represents the sponsor of the Plan who finances the Plan. This includes self-insured, small group health plan and large group health plan.",Map the sponsor directly to a standard CONCEPT_ID. If one does not exists please contact the vocabulary team. There is no global controlled vocabulary available for this information. The point is to stratify on this information and identify if Persons have the same sponsor though the name of the sponsor is not necessary. [Accepted Concepts](http://athena.ohdsi.org/search-terms/terms?domain=Sponsor&standardConcept=Standard&page=1&pageSize=15&query=).,No,Yes,CONCEPT,CONCEPT_ID,,,
PAYER_PLAN_PERIOD,sponsor_source_value,No,varchar(50),The Plan sponsor as it appears in the source data.,,No,No,,,,,
PAYER_PLAN_PERIOD,sponsor_source_concept_id,No,integer,,If the source data codes the sponsor in an OMOP supported vocabulary store the concept_id here.,No,Yes,CONCEPT,CONCEPT_ID,,,
PAYER_PLAN_PERIOD,family_source_value,No,varchar(50),The common identifier for all people (often a family) that covered by the same policy.,Often these are the common digits of the enrollment id of the policy members.,No,No,,,,,
PAYER_PLAN_PERIOD,stop_reason_concept_id,No,integer,"This field represents the reason the Person left the Plan, if known.",Map the stop reason directly to a standard CONCEPT_ID. If one does not exists please contact the vocabulary team. There is no global controlled vocabulary available for this information. [Accepted Concepts](http://athena.ohdsi.org/search-terms/terms?domain=Plan+Stop+Reason&standardConcept=Standard&page=1&pageSize=15&query=).,No,Yes,CONCEPT,CONCEPT_ID,,,
PAYER_PLAN_PERIOD,stop_reason_source_value,No,varchar(50),The Plan stop reason as it appears in the source data.,,No,No,,,,,
PAYER_PLAN_PERIOD,stop_reason_source_concept_id,No,integer,,If the source data codes the stop reason in an OMOP supported vocabulary store the concept_id here.,No,Yes,CONCEPT,CONCEPT_ID,,,
COST,cost_id,Yes,integer,,,Yes,No,,,,,
COST,cost_event_id,Yes,integer,,,No,No,,,,,
COST,cost_domain_id,Yes,varchar(20),,,No,Yes,DOMAIN,DOMAIN_ID,,,
COST,cost_type_concept_id,Yes,integer,,,No,Yes,CONCEPT,CONCEPT_ID,,,
COST,currency_concept_id,No,integer,,,No,Yes,CONCEPT,CONCEPT_ID,,,
COST,total_charge,No,float,,,No,No,,,,,
COST,total_cost,No,float,,,No,No,,,,,
COST,total_paid,No,float,,,No,No,,,,,
COST,paid_by_payer,No,float,,,No,No,,,,,
COST,paid_by_patient,No,float,,,No,No,,,,,
COST,paid_patient_copay,No,float,,,No,No,,,,,
COST,paid_patient_coinsurance,No,float,,,No,No,,,,,
COST,paid_patient_deductible,No,float,,,No,No,,,,,
COST,paid_by_primary,No,float,,,No,No,,,,,
COST,paid_ingredient_cost,No,float,,,No,No,,,,,
COST,paid_dispensing_fee,No,float,,,No,No,,,,,
COST,payer_plan_period_id,No,integer,,,No,No,,,,,
COST,amount_allowed,No,float,,,No,No,,,,,
COST,revenue_code_concept_id,No,integer,,,No,Yes,CONCEPT,CONCEPT_ID,,,
COST,revenue_code_source_value,No,varchar(50),Revenue codes are a method to charge for a class of procedures and conditions in the U.S. hospital system.,,No,No,,,,,
COST,drg_concept_id,No,integer,,,No,Yes,CONCEPT,CONCEPT_ID,,,
COST,drg_source_value,No,varchar(3),Diagnosis Related Groups are US codes used to classify hospital cases into one of approximately 500 groups. ,,No,No,,,,,
DRUG_ERA,drug_era_id,Yes,integer,,,Yes,No,,,,,
DRUG_ERA,person_id,Yes,integer,,,No,Yes,PERSON,PERSON_ID,,,
DRUG_ERA,drug_concept_id,Yes,integer,The Concept Id representing the specific drug ingredient.,,No,Yes,CONCEPT,CONCEPT_ID,Drug,Ingredient,
DRUG_ERA,drug_era_start_date,Yes,datetime,,"The Drug Era Start Date is the start date of the first Drug Exposure for a given ingredient, with at least 31 days since the previous exposure. ",No,No,,,,,
- Uncertain = true or high or moderate or even low (could argue about low). Term_modifiers will concatenate all modifiers for different types of entities (conditions, drugs, labs etc) into one string. Lab values will be saved as one of the modifiers. ",No,No,,,,,
SPECIMEN,specimen_id,Yes,integer,Unique identifier for each specimen.,,Yes,No,,,,,
SPECIMEN,person_id,Yes,integer,The person from whom the specimen is collected.,,No,Yes,PERSON,PERSON_ID,,,
SPECIMEN,specimen_concept_id,Yes,integer,,The standard CONCEPT_ID that the SPECIMEN_SOURCE_VALUE maps to in the specimen domain. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Specimen&standardConcept=Standard&page=1&pageSize=15&query=),No,Yes,CONCEPT,CONCEPT_ID,,,
SPECIMEN,specimen_type_concept_id,Yes,integer,,"Put the source of the specimen record, as in an EHR system. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?standardConcept=Standard&domain=Type+Concept&page=1&pageSize=15&query=).",No,Yes,CONCEPT,CONCEPT_ID,Type Concept,,
SPECIMEN,specimen_date,Yes,date,The date the specimen was collected.,,No,No,,,,,
SPECIMEN,specimen_datetime,No,datetime,,,No,No,,,,,
SPECIMEN,quantity,No,float,The amount of specimen collected from the person.,,No,No,,,,,
SPECIMEN,unit_concept_id,No,integer,The unit for the quantity of the specimen.,Map the UNIT_SOURCE_VALUE to a Standard Concept in the Unit domain. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Unit&standardConcept=Standard&page=1&pageSize=15&query=),No,Yes,CONCEPT,CONCEPT_ID,,,
SPECIMEN,anatomic_site_concept_id,No,integer,This is the site on the body where the specimen is from.,Map the ANATOMIC_SITE_SOURCE_VALUE to a Standard Concept in the Spec Anatomic Site domain. This should be coded at the lowest level of granularity [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?standardConcept=Standard&domain=Spec+Anatomic+Site&conceptClass=Body+Structure&page=4&pageSize=15&query=),No,Yes,CONCEPT,CONCEPT_ID,,,
SPECIMEN,disease_status_concept_id,No,integer,,,No,Yes,CONCEPT,CONCEPT_ID,,,
SPECIMEN,specimen_source_id,No,varchar(50),This is the identifier for the specimen from the source system. ,,No,No,,,,,
SPECIMEN,specimen_source_value,No,varchar(50),,,No,No,,,,,
SPECIMEN,unit_source_value,No,varchar(50),,"This unit for the quantity of the specimen, as represented in the source.",No,No,,,,,
SPECIMEN,anatomic_site_source_value,No,varchar(50),,"This is the site on the body where the specimen was taken from, as represented in the source.",No,No,,,,,
SPECIMEN,disease_status_source_value,No,varchar(50),,,No,No,,,,,
FACT_RELATIONSHIP,domain_concept_id_1,Yes,integer,,,No,Yes,CONCEPT,CONCEPT_ID,,,
FACT_RELATIONSHIP,fact_id_1,Yes,integer,,,No,No,,,,,
FACT_RELATIONSHIP,domain_concept_id_2,Yes,integer,,,No,Yes,CONCEPT,CONCEPT_ID,,,
FACT_RELATIONSHIP,fact_id_2,Yes,integer,,,No,No,,,,,
FACT_RELATIONSHIP,relationship_concept_id,Yes,integer,,,No,Yes,CONCEPT,CONCEPT_ID,,,
LOCATION,location_id,Yes,integer,The unique key given to a unique Location.,Each instance of a Location in the source data should be assigned this unique key.,Yes,No,,,,,
LOCATION,address_1,No,varchar(50),This is the first line of the address.,,No,No,,,,,
LOCATION,address_2,No,varchar(50),This is the second line of the address,,No,No,,,,,
LOCATION,city,No,varchar(50),,,No,No,,,,,
LOCATION,state,No,varchar(2),,,No,No,,,,,
LOCATION,zip,No,varchar(9),,"Zip codes are handled as strings of up to 9 characters length. For US addresses, these represent either a 3-digit abbreviated Zip code as provided by many sources for patient protection reasons, the full 5-digit Zip or the 9-digit (ZIP + 4) codes. Unless for specific reasons analytical methods should expect and utilize only the first 3 digits. For international addresses, different rules apply.",No,No,,,,,
LOCATION,county,No,varchar(20),,,No,No,,,,,
LOCATION,location_source_value,No,varchar(50),,"Put the verbatim value for the location here, as it shows up in the source. ",No,No,,,,,
LOCATION,country_concept_id,No,integer,The Concept Id representing the country. Values should conform to the [Geography](https://athena.ohdsi.org/search-terms/terms?domain=Geography&standardConcept=Standard&page=1&pageSize=15&query=&boosts) domain. ,,,,,,,,
LOCATION,country_source_value,No,varchar(80),The name of the country.,,,,,,,,
LOCATION,latitude,No,float,,Must be between -90 and 90.,,,,,,,
LOCATION,longitude,No,float,,Must be between -180 and 180.,,,,,,,
CARE_SITE,care_site_id,Yes,integer,,Assign an id to each unique combination of location_id and place_of_service_source_value,Yes,No,,,,,
CARE_SITE,care_site_name,No,varchar(255),The name of the care_site as it appears in the source data,,No,No,,,,,
CARE_SITE,place_of_service_concept_id,No,integer,"This is a high-level way of characterizing a Care Site. Typically, however, Care Sites can provide care in multiple settings (inpatient, outpatient, etc.) and this granularity should be reflected in the visit.","Choose the concept in the visit domain that best represents the setting in which healthcare is provided in the Care Site. If most visits in a Care Site are Inpatient, then the place_of_service_concept_id should represent Inpatient. If information is present about a unique Care Site (e.g. Pharmacy) then a Care Site record should be created. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Visit&standardConcept=Standard&page=2&pageSize=15&query=).",No,Yes,CONCEPT,CONCEPT_ID,,,
CARE_SITE,location_id,No,integer,The location_id from the LOCATION table representing the physical location of the care_site.,,No,Yes,LOCATION,LOCATION_ID,,,
CARE_SITE,care_site_source_value,No,varchar(50),The identifier of the care_site as it appears in the source data. This could be an identifier separate from the name of the care_site.,,No,No,,,,,
CARE_SITE,place_of_service_source_value,No,varchar(50),,Put the place of service of the care_site as it appears in the source data.,No,No,,,,,
PROVIDER,provider_id,Yes,integer,It is assumed that every provider with a different unique identifier is in fact a different person and should be treated independently.,"This identifier can be the original id from the source data provided it is an integer, otherwise it can be an autogenerated number.",Yes,No,,,,,
PROVIDER,provider_name,No,varchar(255),,"This field is not necessary as it is not necessary to have the actual identity of the Provider. Rather, the idea is to uniquely and anonymously identify providers of care across the database.",No,No,,,,,
PROVIDER,npi,No,varchar(20),This is the National Provider Number issued to health care providers in the US by the Centers for Medicare and Medicaid Services (CMS).,,No,No,,,,,
PROVIDER,dea,No,varchar(20),"This is the identifier issued by the DEA, a US federal agency, that allows a provider to write prescriptions for controlled substances.",,No,No,,,,,
PROVIDER,specialty_concept_id,No,integer,"This field either represents the most common specialty that occurs in the data or the most specific concept that represents all specialties listed, should the provider have more than one. This includes physician specialties such as internal medicine, emergency medicine, etc. and allied health professionals such as nurses, midwives, and pharmacists.","If a Provider has more than one Specialty, there are two options: 1. Choose a concept_id which is a common ancestor to the multiple specialties, or, 2. Choose the specialty that occurs most often for the provider. Concepts in this field should be Standard with a domain of Provider. [Accepted Concepts](http://athena.ohdsi.org/search-terms/terms?domain=Provider&standardConcept=Standard&page=1&pageSize=15&query=).",No,Yes,CONCEPT,CONCEPT_ID,,,
PROVIDER,care_site_id,No,integer,This is the CARE_SITE_ID for the location that the provider primarily practices in.,"If a Provider has more than one Care Site, the main or most often exerted CARE_SITE_ID should be recorded.",No,Yes,CARE_SITE,CARE_SITE_ID,,,
PROVIDER,year_of_birth,No,integer,,,No,No,,,,,
PROVIDER,gender_concept_id,No,integer,This field represents the recorded gender of the provider in the source data.,"If given, put a concept from the gender domain representing the recorded gender of the provider. [Accepted Concepts](http://athena.ohdsi.org/search-terms/terms?domain=Gender&standardConcept=Standard&page=1&pageSize=15&query=).",No,Yes,CONCEPT,CONCEPT_ID,Gender,,
PROVIDER,provider_source_value,No,varchar(50),Use this field to link back to providers in the source data. This is typically used for error checking of ETL logic.,Some use cases require the ability to link back to providers in the source data. This field allows for the storing of the provider identifier as it appears in the source.,No,No,,,,,
PROVIDER,specialty_source_value,No,varchar(50),"This is the kind of provider or specialty as it appears in the source data. This includes physician specialties such as internal medicine, emergency medicine, etc. and allied health professionals such as nurses, midwives, and pharmacists.",Put the kind of provider as it appears in the source data. This field is up to the discretion of the ETL-er as to whether this should be the coded value from the source or the text description of the lookup value.,No,No,,,,,
PROVIDER,specialty_source_concept_id,No,integer,This is often zero as many sites use proprietary codes to store physician speciality.,If the source data codes provider specialty in an OMOP supported vocabulary store the concept_id here.,No,Yes,CONCEPT,CONCEPT_ID,,,
PROVIDER,gender_source_value,No,varchar(50),This is provider's gender as it appears in the source data.,Put the provider's gender as it appears in the source data. This field is up to the discretion of the ETL-er as to whether this should be the coded value from the source or the text description of the lookup value.,No,No,,,,,
PROVIDER,gender_source_concept_id,No,integer,This is often zero as many sites use proprietary codes to store provider gender.,If the source data codes provider gender in an OMOP supported vocabulary store the concept_id here.,No,Yes,CONCEPT,CONCEPT_ID,,,
PAYER_PLAN_PERIOD,payer_plan_period_id,Yes,integer,"A unique identifier for each unique combination of a Person, Payer, Plan, and Period of time.",,Yes,Yes,PERSON,PERSON_ID,,,
PAYER_PLAN_PERIOD,person_id,Yes,integer,The Person covered by the Plan.,"A single Person can have multiple, overlapping, PAYER_PLAN_PERIOD records",No,Yes,PERSON,PERSON_ID,,,
PAYER_PLAN_PERIOD,payer_plan_period_start_date,Yes,date,Start date of Plan coverage.,,No,No,,,,,
PAYER_PLAN_PERIOD,payer_plan_period_end_date,Yes,date,End date of Plan coverage.,,No,No,,,,,
PAYER_PLAN_PERIOD,payer_concept_id,No,integer,This field represents the organization who reimburses the provider which administers care to the Person.,"Map the Payer directly to a standard CONCEPT_ID. If one does not exists please contact the vocabulary team. There is no global controlled vocabulary available for this information. The point is to stratify on this information and identify if Persons have the same payer, though the name of the Payer is not necessary. [Accepted Concepts](http://athena.ohdsi.org/search-terms/terms?domain=Payer&standardConcept=Standard&page=1&pageSize=15&query=).",No,Yes,CONCEPT,CONCEPT_ID,,,
PAYER_PLAN_PERIOD,payer_source_value,No,varchar(50),This is the Payer as it appears in the source data.,,No,No,,,,,
PAYER_PLAN_PERIOD,payer_source_concept_id,No,integer,,If the source data codes the Payer in an OMOP supported vocabulary store the concept_id here.,No,Yes,CONCEPT,CONCEPT_ID,,,
PAYER_PLAN_PERIOD,plan_concept_id,No,integer,This field represents the specific health benefit Plan the Person is enrolled in.,Map the Plan directly to a standard CONCEPT_ID. If one does not exists please contact the vocabulary team. There is no global controlled vocabulary available for this information. The point is to stratify on this information and identify if Persons have the same health benefit Plan though the name of the Plan is not necessary. [Accepted Concepts](http://athena.ohdsi.org/search-terms/terms?domain=Plan&standardConcept=Standard&page=1&pageSize=15&query=).,No,Yes,CONCEPT,CONCEPT_ID,,,
PAYER_PLAN_PERIOD,plan_source_value,No,varchar(50),This is the health benefit Plan of the Person as it appears in the source data.,,No,No,,,,,
PAYER_PLAN_PERIOD,plan_source_concept_id,No,integer,,If the source data codes the Plan in an OMOP supported vocabulary store the concept_id here.,No,Yes,CONCEPT,CONCEPT_ID,,,
PAYER_PLAN_PERIOD,sponsor_concept_id,No,integer,"This field represents the sponsor of the Plan who finances the Plan. This includes self-insured, small group health plan and large group health plan.",Map the sponsor directly to a standard CONCEPT_ID. If one does not exists please contact the vocabulary team. There is no global controlled vocabulary available for this information. The point is to stratify on this information and identify if Persons have the same sponsor though the name of the sponsor is not necessary. [Accepted Concepts](http://athena.ohdsi.org/search-terms/terms?domain=Sponsor&standardConcept=Standard&page=1&pageSize=15&query=).,No,Yes,CONCEPT,CONCEPT_ID,,,
PAYER_PLAN_PERIOD,sponsor_source_value,No,varchar(50),The Plan sponsor as it appears in the source data.,,No,No,,,,,
PAYER_PLAN_PERIOD,sponsor_source_concept_id,No,integer,,If the source data codes the sponsor in an OMOP supported vocabulary store the concept_id here.,No,Yes,CONCEPT,CONCEPT_ID,,,
PAYER_PLAN_PERIOD,family_source_value,No,varchar(50),The common identifier for all people (often a family) that covered by the same policy.,Often these are the common digits of the enrollment id of the policy members.,No,No,,,,,
PAYER_PLAN_PERIOD,stop_reason_concept_id,No,integer,"This field represents the reason the Person left the Plan, if known.",Map the stop reason directly to a standard CONCEPT_ID. If one does not exists please contact the vocabulary team. There is no global controlled vocabulary available for this information. [Accepted Concepts](http://athena.ohdsi.org/search-terms/terms?domain=Plan+Stop+Reason&standardConcept=Standard&page=1&pageSize=15&query=).,No,Yes,CONCEPT,CONCEPT_ID,,,
PAYER_PLAN_PERIOD,stop_reason_source_value,No,varchar(50),The Plan stop reason as it appears in the source data.,,No,No,,,,,
PAYER_PLAN_PERIOD,stop_reason_source_concept_id,No,integer,,If the source data codes the stop reason in an OMOP supported vocabulary store the concept_id here.,No,Yes,CONCEPT,CONCEPT_ID,,,
COST,cost_id,Yes,integer,,,Yes,No,,,,,
COST,cost_event_id,Yes,integer,,,No,No,,,,,
COST,cost_domain_id,Yes,varchar(20),,,No,Yes,DOMAIN,DOMAIN_ID,,,
COST,cost_type_concept_id,Yes,integer,,,No,Yes,CONCEPT,CONCEPT_ID,,,
COST,currency_concept_id,No,integer,,,No,Yes,CONCEPT,CONCEPT_ID,,,
COST,total_charge,No,float,,,No,No,,,,,
COST,total_cost,No,float,,,No,No,,,,,
COST,total_paid,No,float,,,No,No,,,,,
COST,paid_by_payer,No,float,,,No,No,,,,,
COST,paid_by_patient,No,float,,,No,No,,,,,
COST,paid_patient_copay,No,float,,,No,No,,,,,
COST,paid_patient_coinsurance,No,float,,,No,No,,,,,
COST,paid_patient_deductible,No,float,,,No,No,,,,,
COST,paid_by_primary,No,float,,,No,No,,,,,
COST,paid_ingredient_cost,No,float,,,No,No,,,,,
COST,paid_dispensing_fee,No,float,,,No,No,,,,,
COST,payer_plan_period_id,No,integer,,,No,No,,,,,
COST,amount_allowed,No,float,,,No,No,,,,,
COST,revenue_code_concept_id,No,integer,,,No,Yes,CONCEPT,CONCEPT_ID,,,
COST,revenue_code_source_value,No,varchar(50),Revenue codes are a method to charge for a class of procedures and conditions in the U.S. hospital system.,,No,No,,,,,
COST,drg_concept_id,No,integer,,,No,Yes,CONCEPT,CONCEPT_ID,,,
COST,drg_source_value,No,varchar(3),Diagnosis Related Groups are US codes used to classify hospital cases into one of approximately 500 groups. ,,No,No,,,,,
DRUG_ERA,drug_era_id,Yes,integer,,,Yes,No,,,,,
DRUG_ERA,person_id,Yes,integer,,,No,Yes,PERSON,PERSON_ID,,,
DRUG_ERA,drug_concept_id,Yes,integer,The Concept Id representing the specific drug ingredient.,,No,Yes,CONCEPT,CONCEPT_ID,Drug,Ingredient,
DRUG_ERA,drug_era_start_date,Yes,datetime,,"The Drug Era Start Date is the start date of the first Drug Exposure for a given ingredient, with at least 31 days since the previous exposure. ",No,No,,,,,
DRUG_ERA,drug_era_end_date,Yes,datetime,,"The Drug Era End Date is the end date of the last Drug Exposure. The End Date of each Drug Exposure is either taken from the field drug_exposure_end_date or, as it is typically not available, inferred using the following rules:
For pharmacy prescription data, the date when the drug was dispensed plus the number of days of supply are used to extrapolate the End Date for the Drug Exposure. Depending on the country-specific healthcare system, this supply information is either explicitly provided in the day_supply field or inferred from package size or similar information.
For Procedure Drugs, usually the drug is administered on a single date (i.e., the administration date).
A standard Persistence Window of 30 days (gap, slack) is permitted between two subsequent such extrapolated DRUG_EXPOSURE records to be considered to be merged into a single Drug Era.",No,No,,,,,
DRUG_ERA,drug_exposure_count,No,integer,,,No,No,,,,,
DRUG_ERA,gap_days,No,integer,,"The Gap Days determine how many total drug-free days are observed between all Drug Exposure events that contribute to a DRUG_ERA record. It is assumed that the drugs are ""not stockpiled"" by the patient, i.e. that if a new drug prescription or refill is observed (a new DRUG_EXPOSURE record is written), the remaining supply from the previous events is abandoned. The difference between Persistence Window and Gap Days is that the former is the maximum drug-free time allowed between two subsequent DRUG_EXPOSURE records, while the latter is the sum of actual drug-free days for the given Drug Era under the above assumption of non-stockpiling.",No,No,,,,,
DOSE_ERA,dose_era_id,Yes,integer,,,Yes,No,,,,,
DOSE_ERA,person_id,Yes,integer,,,No,Yes,PERSON,PERSON_ID,,,
DOSE_ERA,drug_concept_id,Yes,integer,The Concept Id representing the specific drug ingredient.,,No,Yes,CONCEPT,CONCEPT_ID,Drug,Ingredient,
DOSE_ERA,unit_concept_id,Yes,integer,The Concept Id representing the unit of the specific drug ingredient.,,No,Yes,CONCEPT,CONCEPT_ID,Unit,,
DOSE_ERA,dose_value,Yes,float,The numeric value of the dosage of the drug_ingredient.,,No,No,,,,,
DOSE_ERA,dose_era_start_date,Yes,datetime,"The date the Person started on the specific dosage, with at least 31 days since any prior exposure.",,No,No,,,,,
DOSE_ERA,dose_era_end_date,Yes,datetime,,The date the Person was no longer exposed to the dosage of the specific drug ingredient. An era is ended if there are 31 days or more between dosage records.,No,No,,,,,
CONDITION_ERA,condition_era_id,Yes,integer,,,Yes,No,,,,,
CONDITION_ERA,person_id,Yes,integer,,,No,No,PERSON,PERSON_ID,,,
CONDITION_ERA,condition_concept_id,Yes,integer,The Concept Id representing the Condition.,,No,Yes,CONCEPT,CONCEPT_ID,Condition,,
A standard Persistence Window of 30 days (gap, slack) is permitted between two subsequent such extrapolated DRUG_EXPOSURE records to be considered to be merged into a single Drug Era.",No,No,,,,,
DRUG_ERA,drug_exposure_count,No,integer,,,No,No,,,,,
DRUG_ERA,gap_days,No,integer,,"The Gap Days determine how many total drug-free days are observed between all Drug Exposure events that contribute to a DRUG_ERA record. It is assumed that the drugs are ""not stockpiled"" by the patient, i.e. that if a new drug prescription or refill is observed (a new DRUG_EXPOSURE record is written), the remaining supply from the previous events is abandoned. The difference between Persistence Window and Gap Days is that the former is the maximum drug-free time allowed between two subsequent DRUG_EXPOSURE records, while the latter is the sum of actual drug-free days for the given Drug Era under the above assumption of non-stockpiling.",No,No,,,,,
DOSE_ERA,dose_era_id,Yes,integer,,,Yes,No,,,,,
DOSE_ERA,person_id,Yes,integer,,,No,Yes,PERSON,PERSON_ID,,,
DOSE_ERA,drug_concept_id,Yes,integer,The Concept Id representing the specific drug ingredient.,,No,Yes,CONCEPT,CONCEPT_ID,Drug,Ingredient,
DOSE_ERA,unit_concept_id,Yes,integer,The Concept Id representing the unit of the specific drug ingredient.,,No,Yes,CONCEPT,CONCEPT_ID,Unit,,
DOSE_ERA,dose_value,Yes,float,The numeric value of the dosage of the drug_ingredient.,,No,No,,,,,
DOSE_ERA,dose_era_start_date,Yes,datetime,"The date the Person started on the specific dosage, with at least 31 days since any prior exposure.",,No,No,,,,,
DOSE_ERA,dose_era_end_date,Yes,datetime,,The date the Person was no longer exposed to the dosage of the specific drug ingredient. An era is ended if there are 31 days or more between dosage records.,No,No,,,,,
CONDITION_ERA,condition_era_id,Yes,integer,,,Yes,No,,,,,
CONDITION_ERA,person_id,Yes,integer,,,No,No,PERSON,PERSON_ID,,,
CONDITION_ERA,condition_concept_id,Yes,integer,The Concept Id representing the Condition.,,No,Yes,CONCEPT,CONCEPT_ID,Condition,,
CONDITION_ERA,condition_era_start_date,Yes,datetime,"The start date for the Condition Era
constructed from the individual
instances of Condition Occurrences.
It is the start date of the very first
chronologically recorded instance of
the condition with at least 31 days since any prior record of the same Condition. ",,No,No,,,,,
the condition with at least 31 days since any prior record of the same Condition. ",,No,No,,,,,
CONDITION_ERA,condition_era_end_date,Yes,datetime,"The end date for the Condition Era
constructed from the individual
instances of Condition Occurrences.
It is the end date of the final
continuously recorded instance of the
Condition.",,No,No,,,,,
Condition.",,No,No,,,,,
CONDITION_ERA,condition_occurrence_count,No,integer,"The number of individual Condition
Occurrences used to construct the
condition era.",,No,No,,,,,
METADATA,metadata_concept_id,Yes,integer,,,No,Yes,CONCEPT,CONCEPT_ID,,,
METADATA,metadata_type_concept_id,Yes,integer,,,No,Yes,CONCEPT,CONCEPT_ID,,,
METADATA,name,Yes,varchar(250),,,No,No,,,,,
METADATA,value_as_string,No,varchar(250),,,No,No,,,,,
METADATA,value_as_concept_id,No,integer,,,No,Yes,CONCEPT,CONCEPT_ID,,,
METADATA,metadata_date,No,date,,,No,No,,,,,
METADATA,metadata_datetime,No,datetime,,,No,No,,,,,
CDM_SOURCE,cdm_source_name,Yes,varchar(255),The name of the CDM instance.,,No,No,,,,,
CDM_SOURCE,cdm_source_abbreviation,Yes,varchar(25),The abbreviation of the CDM instance.,,No,No,,,,,
CDM_SOURCE,cdm_holder,Yes,varchar(255),The holder of the CDM instance.,,No,No,,,,,
CDM_SOURCE,source_description,No,varchar(MAX),The description of the CDM instance.,,No,No,,,,,
CDM_SOURCE,source_documentation_reference,No,varchar(255),,,No,No,,,,,
CDM_SOURCE,cdm_etl_reference,No,varchar(255),,Put the link to the CDM version used.,No,No,,,,,
CDM_SOURCE,source_release_date,Yes,date,The release date of the source data.,,No,No,,,,,
CDM_SOURCE,cdm_release_date,Yes,date,The release data of the CDM instance.,,No,No,,,,,
CDM_SOURCE,cdm_version,No,varchar(10),,,No,No,,,,,
CDM_SOURCE,cdm_version_concept_id,Yes,integer,The Concept Id representing the version of the CDM.,,,,,,,,
CDM_SOURCE,vocabulary_version,Yes,varchar(20),,,No,No,,,,,
CONCEPT,concept_id,Yes,integer,A unique identifier for each Concept across all domains.,,Yes,No,,,,,
CONCEPT,concept_name,Yes,varchar(255),"An unambiguous, meaningful and descriptive name for the Concept.",,No,No,,,,,
CONCEPT,domain_id,Yes,varchar(20),A foreign key to the [DOMAIN](https://ohdsi.github.io/CommonDataModel/cdm531.html#domain) table the Concept belongs to.,,No,Yes,DOMAIN,DOMAIN_ID,,,
condition era.",,No,No,,,,,
METADATA,metadata_concept_id,Yes,integer,,,No,Yes,CONCEPT,CONCEPT_ID,,,
METADATA,metadata_type_concept_id,Yes,integer,,,No,Yes,CONCEPT,CONCEPT_ID,,,
METADATA,name,Yes,varchar(250),,,No,No,,,,,
METADATA,value_as_string,No,varchar(250),,,No,No,,,,,
METADATA,value_as_concept_id,No,integer,,,No,Yes,CONCEPT,CONCEPT_ID,,,
METADATA,metadata_date,No,date,,,No,No,,,,,
METADATA,metadata_datetime,No,datetime,,,No,No,,,,,
CDM_SOURCE,cdm_source_name,Yes,varchar(255),The name of the CDM instance.,,No,No,,,,,
CDM_SOURCE,cdm_source_abbreviation,Yes,varchar(25),The abbreviation of the CDM instance.,,No,No,,,,,
CDM_SOURCE,cdm_holder,Yes,varchar(255),The holder of the CDM instance.,,No,No,,,,,
CDM_SOURCE,source_description,No,varchar(MAX),The description of the CDM instance.,,No,No,,,,,
CDM_SOURCE,source_documentation_reference,No,varchar(255),,,No,No,,,,,
CDM_SOURCE,cdm_etl_reference,No,varchar(255),,Put the link to the CDM version used.,No,No,,,,,
CDM_SOURCE,source_release_date,Yes,date,The release date of the source data.,,No,No,,,,,
CDM_SOURCE,cdm_release_date,Yes,date,The release data of the CDM instance.,,No,No,,,,,
CDM_SOURCE,cdm_version,No,varchar(10),,,No,No,,,,,
CDM_SOURCE,cdm_version_concept_id,Yes,integer,The Concept Id representing the version of the CDM.,,,,,,,,
CDM_SOURCE,vocabulary_version,Yes,varchar(20),,,No,No,,,,,
CONCEPT,concept_id,Yes,integer,A unique identifier for each Concept across all domains.,,Yes,No,,,,,
CONCEPT,concept_name,Yes,varchar(255),"An unambiguous, meaningful and descriptive name for the Concept.",,No,No,,,,,
CONCEPT,domain_id,Yes,varchar(20),A foreign key to the [DOMAIN](https://ohdsi.github.io/CommonDataModel/cdm531.html#domain) table the Concept belongs to.,,No,Yes,DOMAIN,DOMAIN_ID,,,
CONCEPT,vocabulary_id,Yes,varchar(20),"A foreign key to the [VOCABULARY](https://ohdsi.github.io/CommonDataModel/cdm531.html#vocabulary)
table indicating from which source the
Concept has been adapted.",,No,Yes,VOCABULARY,VOCABULARY_ID,,,
Concept has been adapted.",,No,Yes,VOCABULARY,VOCABULARY_ID,,,
CONCEPT,concept_class_id,Yes,varchar(20),"The attribute or concept class of the
Concept. Examples are 'Clinical Drug',
'Ingredient', 'Clinical Finding' etc.",,No,Yes,CONCEPT_CLASS,CONCEPT_CLASS_ID,,,
'Ingredient', 'Clinical Finding' etc.",,No,Yes,CONCEPT_CLASS,CONCEPT_CLASS_ID,,,
CONCEPT,standard_concept,No,varchar(1),"This flag determines where a Concept is
a Standard Concept, i.e. is used in the
data, a Classification Concept, or a
non-standard Source Concept. The
allowable values are 'S' (Standard
Concept) and 'C' (Classification
Concept), otherwise the content is NULL.",,No,No,,,,,
Concept), otherwise the content is NULL.",,No,No,,,,,
CONCEPT,concept_code,Yes,varchar(50),"The concept code represents the identifier
of the Concept in the source vocabulary,
such as SNOMED-CT concept IDs,
RxNorm RXCUIs etc. Note that concept
codes are not unique across vocabularies.",,No,No,,,,,
codes are not unique across vocabularies.",,No,No,,,,,
CONCEPT,valid_start_date,Yes,date,"The date when the Concept was first
recorded. The default value is
1-Jan-1970, meaning, the Concept has no
(known) date of inception.",,No,No,,,,,
(known) date of inception.",,No,No,,,,,
CONCEPT,valid_end_date,Yes,date,"The date when the Concept became
invalid because it was deleted or
superseded (updated) by a new concept.
The default value is 31-Dec-2099,
meaning, the Concept is valid until it
becomes deprecated.",,No,No,,,,,
becomes deprecated.",,No,No,,,,,
CONCEPT,invalid_reason,No,varchar(1),"Reason the Concept was invalidated.
Possible values are D (deleted), U
(replaced with an update) or NULL when
valid_end_date has the default value.",,No,No,,,,,
valid_end_date has the default value.",,No,No,,,,,
VOCABULARY,vocabulary_id,Yes,varchar(20),"A unique identifier for each Vocabulary, such
as ICD9CM, SNOMED, Visit.",,Yes,No,,,,,
as ICD9CM, SNOMED, Visit.",,Yes,No,,,,,
VOCABULARY,vocabulary_name,Yes,varchar(255),"The name describing the vocabulary, for
example, International Classification of
Diseases, Ninth Revision, Clinical
Modification, Volume 1 and 2 (NCHS) etc.",,No,No,,,,,
Modification, Volume 1 and 2 (NCHS) etc.",,No,No,,,,,
VOCABULARY,vocabulary_reference,Yes,varchar(255),"External reference to documentation or
available download of the about the
vocabulary.",,No,No,,,,,
vocabulary.",,No,No,,,,,
VOCABULARY,vocabulary_version,No,varchar(255),"Version of the Vocabulary as indicated in
the source.",,No,No,,,,,
VOCABULARY,vocabulary_concept_id,Yes,integer,A Concept that represents the Vocabulary the VOCABULARY record belongs to.,,No,Yes,CONCEPT,CONCEPT_ID,,,
DOMAIN,domain_id,Yes,varchar(20),A unique key for each domain.,,Yes,No,,,,,
the source.",,No,No,,,,,
VOCABULARY,vocabulary_concept_id,Yes,integer,A Concept that represents the Vocabulary the VOCABULARY record belongs to.,,No,Yes,CONCEPT,CONCEPT_ID,,,
DOMAIN,domain_id,Yes,varchar(20),A unique key for each domain.,,Yes,No,,,,,
DOMAIN,domain_name,Yes,varchar(255),"The name describing the Domain, e.g.
Condition, Procedure, Measurement
etc.",,No,No,,,,,
DOMAIN,domain_concept_id,Yes,integer,A Concept representing the Domain Concept the DOMAIN record belongs to.,,No,Yes,CONCEPT,CONCEPT_ID,,,
CONCEPT_CLASS,concept_class_id,Yes,varchar(20),A unique key for each class.,,Yes,No,,,,,
etc.",,No,No,,,,,
DOMAIN,domain_concept_id,Yes,integer,A Concept representing the Domain Concept the DOMAIN record belongs to.,,No,Yes,CONCEPT,CONCEPT_ID,,,
CONCEPT_CLASS,concept_class_id,Yes,varchar(20),A unique key for each class.,,Yes,No,,,,,
CONCEPT_CLASS,concept_class_name,Yes,varchar(255),"The name describing the Concept Class, e.g.
Clinical Finding, Ingredient, etc.",,No,No,,,,,
CONCEPT_CLASS,concept_class_concept_id,Yes,integer,A Concept that represents the Concept Class.,,No,Yes,CONCEPT,CONCEPT_ID,,,
CONCEPT_RELATIONSHIP,concept_id_1,Yes,integer,,,No,Yes,CONCEPT,CONCEPT_ID,,,
CONCEPT_RELATIONSHIP,concept_id_2,Yes,integer,,,No,Yes,CONCEPT,CONCEPT_ID,,,
CONCEPT_RELATIONSHIP,relationship_id,Yes,varchar(20),The relationship between CONCEPT_ID_1 and CONCEPT_ID_2. Please see the [Vocabulary Conventions](https://ohdsi.github.io/CommonDataModel/dataModelConventions.html#concept_relationships). for more information. ,,No,Yes,RELATIONSHIP,RELATIONSHIP_ID,,,
CONCEPT_RELATIONSHIP,valid_start_date,Yes,date,The date when the relationship is first recorded.,,No,No,,,,,
CONCEPT_RELATIONSHIP,valid_end_date,Yes,date,The date when the relationship is invalidated.,,No,No,,,,,
CONCEPT_RELATIONSHIP,invalid_reason,No,varchar(1),"Reason the relationship was invalidated. Possible values are 'D' (deleted), 'U' (updated) or NULL. ",,No,No,,,,,
Clinical Finding, Ingredient, etc.",,No,No,,,,,
CONCEPT_CLASS,concept_class_concept_id,Yes,integer,A Concept that represents the Concept Class.,,No,Yes,CONCEPT,CONCEPT_ID,,,
CONCEPT_RELATIONSHIP,concept_id_1,Yes,integer,,,No,Yes,CONCEPT,CONCEPT_ID,,,
CONCEPT_RELATIONSHIP,concept_id_2,Yes,integer,,,No,Yes,CONCEPT,CONCEPT_ID,,,
CONCEPT_RELATIONSHIP,relationship_id,Yes,varchar(20),The relationship between CONCEPT_ID_1 and CONCEPT_ID_2. Please see the [Vocabulary Conventions](https://ohdsi.github.io/CommonDataModel/dataModelConventions.html#concept_relationships). for more information. ,,No,Yes,RELATIONSHIP,RELATIONSHIP_ID,,,
CONCEPT_RELATIONSHIP,valid_start_date,Yes,date,The date when the relationship is first recorded.,,No,No,,,,,
CONCEPT_RELATIONSHIP,valid_end_date,Yes,date,The date when the relationship is invalidated.,,No,No,,,,,
CONCEPT_RELATIONSHIP,invalid_reason,No,varchar(1),"Reason the relationship was invalidated. Possible values are 'D' (deleted), 'U' (updated) or NULL. ",,No,No,,,,,
RELATIONSHIP,relationship_id,Yes,varchar(20),"The type of relationship captured by the
relationship record.",,Yes,No,,,,,
RELATIONSHIP,relationship_name,Yes,varchar(255),,,No,No,,,,,
relationship record.",,Yes,No,,,,,
RELATIONSHIP,relationship_name,Yes,varchar(255),,,No,No,,,,,
RELATIONSHIP,is_hierarchical,Yes,varchar(1),"Defines whether a relationship defines
concepts into classes or hierarchies. Values
are 1 for hierarchical relationship or 0 if not.",,No,No,,,,,
are 1 for hierarchical relationship or 0 if not.",,No,No,,,,,
RELATIONSHIP,defines_ancestry,Yes,varchar(1),"Defines whether a hierarchical relationship
contributes to the concept_ancestor table.
These are subsets of the hierarchical
relationships. Valid values are 1 or 0.",,No,No,,,,,
relationships. Valid values are 1 or 0.",,No,No,,,,,
RELATIONSHIP,reverse_relationship_id,Yes,varchar(20),"The identifier for the relationship used to
define the reverse relationship between two
concepts.",,No,No,,,,,
concepts.",,No,No,,,,,
RELATIONSHIP,relationship_concept_id,Yes,integer,"A foreign key that refers to an identifier in
the [CONCEPT](https://ohdsi.github.io/CommonDataModel/cdm531.html#concept) table for the unique
relationship concept.",,No,Yes,CONCEPT,CONCEPT_ID,,,
CONCEPT_SYNONYM,concept_id,Yes,integer,,,No,Yes,CONCEPT,CONCEPT_ID,,,
CONCEPT_SYNONYM,concept_synonym_name,Yes,varchar(1000),,,No,No,,,,,
CONCEPT_SYNONYM,language_concept_id,Yes,integer,,,No,Yes,CONCEPT,CONCEPT_ID,,,
relationship concept.",,No,Yes,CONCEPT,CONCEPT_ID,,,
CONCEPT_SYNONYM,concept_id,Yes,integer,,,No,Yes,CONCEPT,CONCEPT_ID,,,
CONCEPT_SYNONYM,concept_synonym_name,Yes,varchar(1000),,,No,No,,,,,
CONCEPT_SYNONYM,language_concept_id,Yes,integer,,,No,Yes,CONCEPT,CONCEPT_ID,,,
CONCEPT_ANCESTOR,ancestor_concept_id,Yes,integer,"The Concept Id for the higher-level concept
that forms the ancestor in the relationship.",,No,Yes,CONCEPT,CONCEPT_ID,,,
that forms the ancestor in the relationship.",,No,Yes,CONCEPT,CONCEPT_ID,,,
CONCEPT_ANCESTOR,descendant_concept_id,Yes,integer,"The Concept Id for the lower-level concept
that forms the descendant in the
relationship.",,No,Yes,CONCEPT,CONCEPT_ID,,,
relationship.",,No,Yes,CONCEPT,CONCEPT_ID,,,
CONCEPT_ANCESTOR,min_levels_of_separation,Yes,integer,"The minimum separation in number of
levels of hierarchy between ancestor and
descendant concepts. This is an attribute
that is used to simplify hierarchic analysis.",,No,No,,,,,
that is used to simplify hierarchic analysis.",,No,No,,,,,
CONCEPT_ANCESTOR,max_levels_of_separation,Yes,integer,"The maximum separation in number of
levels of hierarchy between ancestor and
descendant concepts. This is an attribute
that is used to simplify hierarchic analysis.",,No,No,,,,,
that is used to simplify hierarchic analysis.",,No,No,,,,,
SOURCE_TO_CONCEPT_MAP,source_code,Yes,varchar(50),"The source code being translated
into a Standard Concept.",,No,No,,,,,
into a Standard Concept.",,No,No,,,,,
SOURCE_TO_CONCEPT_MAP,source_concept_id,Yes,integer,"A foreign key to the Source
Concept that is being translated
into a Standard Concept.","This is either 0 or should be a number above 2 billion, which are the Concepts reserved for site-specific codes and mappings. ",No,Yes,CONCEPT,CONCEPT_ID,,,
into a Standard Concept.","This is either 0 or should be a number above 2 billion, which are the Concepts reserved for site-specific codes and mappings. ",No,Yes,CONCEPT,CONCEPT_ID,,,
SOURCE_TO_CONCEPT_MAP,source_vocabulary_id,Yes,varchar(20),"A foreign key to the
VOCABULARY table defining the
vocabulary of the source code that
is being translated to a Standard
Concept.",,No,No,,,,,
Concept.",,No,No,,,,,
SOURCE_TO_CONCEPT_MAP,source_code_description,No,varchar(255),"An optional description for the
source code. This is included as a
convenience to compare the
description of the source code to
the name of the concept.",,No,No,,,,,
the name of the concept.",,No,No,,,,,
SOURCE_TO_CONCEPT_MAP,target_concept_id,Yes,integer,"The target Concept
to which the source code is being
mapped.",,No,Yes,CONCEPT,CONCEPT_ID,,,
SOURCE_TO_CONCEPT_MAP,target_vocabulary_id,Yes,varchar(20),The Vocabulary of the target Concept.,,No,Yes,VOCABULARY,VOCABULARY_ID,,,
mapped.",,No,Yes,CONCEPT,CONCEPT_ID,,,
SOURCE_TO_CONCEPT_MAP,target_vocabulary_id,Yes,varchar(20),The Vocabulary of the target Concept.,,No,Yes,VOCABULARY,VOCABULARY_ID,,,
SOURCE_TO_CONCEPT_MAP,valid_start_date,Yes,date,"The date when the mapping
instance was first recorded.",,No,No,,,,,
instance was first recorded.",,No,No,,,,,
SOURCE_TO_CONCEPT_MAP,valid_end_date,Yes,date,"The date when the mapping
instance became invalid because it
was deleted or superseded
(updated) by a new relationship.
Default value is 31-Dec-2099.",,No,No,,,,,
SOURCE_TO_CONCEPT_MAP,invalid_reason,No,varchar(1),"Reason the mapping instance was invalidated. Possible values are D (deleted), U (replaced with an update) or NULL when valid_end_date has the default value.",,No,No,,,,,
DRUG_STRENGTH,drug_concept_id,Yes,integer,The Concept representing the Branded Drug or Clinical Drug Product.,,No,Yes,CONCEPT,CONCEPT_ID,,,
DRUG_STRENGTH,ingredient_concept_id,Yes,integer,The Concept representing the active ingredient contained within the drug product.,"Combination Drugs will have more than one record in this table, one for each active Ingredient.",No,Yes,CONCEPT,CONCEPT_ID,,,
DRUG_STRENGTH,amount_value,No,float,The numeric value or the amount of active ingredient contained within the drug product.,,No,No,,,,,
DRUG_STRENGTH,amount_unit_concept_id,No,integer,The Concept representing the Unit of measure for the amount of active ingredient contained within the drug product. ,,No,Yes,CONCEPT,CONCEPT_ID,,,
DRUG_STRENGTH,numerator_value,No,float,The concentration of the active ingredient contained within the drug product.,,No,No,,,,,
DRUG_STRENGTH,numerator_unit_concept_id,No,integer,The Concept representing the Unit of measure for the concentration of active ingredient.,,No,Yes,CONCEPT,CONCEPT_ID,,,
DRUG_STRENGTH,denominator_value,No,float,"The amount of total liquid (or other divisible product, such as ointment, gel, spray, etc.).",,No,No,,,,,
DRUG_STRENGTH,denominator_unit_concept_id,No,integer,The Concept representing the denominator unit for the concentration of active ingredient.,,No,Yes,CONCEPT,CONCEPT_ID,,,
DRUG_STRENGTH,box_size,No,integer,The number of units of Clinical Branded Drug or Quantified Clinical or Branded Drug contained in a box as dispensed to the patient.,,No,No,,,,,
Default value is 31-Dec-2099.",,No,No,,,,,
SOURCE_TO_CONCEPT_MAP,invalid_reason,No,varchar(1),"Reason the mapping instance was invalidated. Possible values are D (deleted), U (replaced with an update) or NULL when valid_end_date has the default value.",,No,No,,,,,
DRUG_STRENGTH,drug_concept_id,Yes,integer,The Concept representing the Branded Drug or Clinical Drug Product.,,No,Yes,CONCEPT,CONCEPT_ID,,,
DRUG_STRENGTH,ingredient_concept_id,Yes,integer,The Concept representing the active ingredient contained within the drug product.,"Combination Drugs will have more than one record in this table, one for each active Ingredient.",No,Yes,CONCEPT,CONCEPT_ID,,,
DRUG_STRENGTH,amount_value,No,float,The numeric value or the amount of active ingredient contained within the drug product.,,No,No,,,,,
DRUG_STRENGTH,amount_unit_concept_id,No,integer,The Concept representing the Unit of measure for the amount of active ingredient contained within the drug product. ,,No,Yes,CONCEPT,CONCEPT_ID,,,
DRUG_STRENGTH,numerator_value,No,float,The concentration of the active ingredient contained within the drug product.,,No,No,,,,,
DRUG_STRENGTH,numerator_unit_concept_id,No,integer,The Concept representing the Unit of measure for the concentration of active ingredient.,,No,Yes,CONCEPT,CONCEPT_ID,,,
DRUG_STRENGTH,denominator_value,No,float,"The amount of total liquid (or other divisible product, such as ointment, gel, spray, etc.).",,No,No,,,,,
DRUG_STRENGTH,denominator_unit_concept_id,No,integer,The Concept representing the denominator unit for the concentration of active ingredient.,,No,Yes,CONCEPT,CONCEPT_ID,,,
DRUG_STRENGTH,box_size,No,integer,The number of units of Clinical Branded Drug or Quantified Clinical or Branded Drug contained in a box as dispensed to the patient.,,No,No,,,,,
DRUG_STRENGTH,valid_start_date,Yes,date,"The date when the Concept was first
recorded. The default value is
1-Jan-1970.",,No,No,,,,,
DRUG_STRENGTH,valid_end_date,Yes,date,The date when then Concept became invalid.,,No,No,,,,,
DRUG_STRENGTH,invalid_reason,No,varchar(1),"Reason the concept was invalidated. Possible values are D (deleted), U (replaced with an update) or NULL when valid_end_date has the default value.",,No,No,,,,,
COHORT_DEFINITION,cohort_definition_id,Yes,integer,"This is the identifier given to the cohort, usually by the ATLAS application",,No,No,,,,,
COHORT_DEFINITION,cohort_definition_name,Yes,varchar(255),A short description of the cohort,,No,No,,,,,
COHORT_DEFINITION,cohort_definition_description,No,varchar(MAX),A complete description of the cohort.,,No,No,,,,,
COHORT_DEFINITION,definition_type_concept_id,Yes,integer,Type defining what kind of Cohort Definition the record represents and how the syntax may be executed.,,No,Yes,CONCEPT,CONCEPT_ID,,,
COHORT_DEFINITION,cohort_definition_syntax,No,varchar(MAX),Syntax or code to operationalize the Cohort Definition.,,No,No,,,,,
COHORT_DEFINITION,subject_concept_id,Yes,integer,"This field contains a Concept that represents the domain of the subjects that are members of the cohort (e.g., Person, Provider, Visit).",,No,Yes,CONCEPT,CONCEPT_ID,,,
COHORT_DEFINITION,cohort_initiation_date,No,date,A date to indicate when the Cohort was initiated in the COHORT table.,,No,No,,,,,
ATTRIBUTE_DEFINITION,attribute_definition_id,Yes,integer,,,No,No,,,,,
ATTRIBUTE_DEFINITION,attribute_name,Yes,varchar(255),,,No,No,,,,,
ATTRIBUTE_DEFINITION,attribute_description,No,varchar(MAX),,,No,No,,,,,
ATTRIBUTE_DEFINITION,attribute_type_concept_id,Yes,integer,,,No,Yes,CONCEPT,CONCEPT_ID,,,
ATTRIBUTE_DEFINITION,attribute_syntax,No,varchar(MAX),,,No,No,,,,,
1-Jan-1970.",,No,No,,,,,
DRUG_STRENGTH,valid_end_date,Yes,date,The date when then Concept became invalid.,,No,No,,,,,
DRUG_STRENGTH,invalid_reason,No,varchar(1),"Reason the concept was invalidated. Possible values are D (deleted), U (replaced with an update) or NULL when valid_end_date has the default value.",,No,No,,,,,
COHORT_DEFINITION,cohort_definition_id,Yes,integer,"This is the identifier given to the cohort, usually by the ATLAS application",,No,No,,,,,
COHORT_DEFINITION,cohort_definition_name,Yes,varchar(255),A short description of the cohort,,No,No,,,,,
COHORT_DEFINITION,cohort_definition_description,No,varchar(MAX),A complete description of the cohort.,,No,No,,,,,
COHORT_DEFINITION,definition_type_concept_id,Yes,integer,Type defining what kind of Cohort Definition the record represents and how the syntax may be executed.,,No,Yes,CONCEPT,CONCEPT_ID,,,
COHORT_DEFINITION,cohort_definition_syntax,No,varchar(MAX),Syntax or code to operationalize the Cohort Definition.,,No,No,,,,,
COHORT_DEFINITION,subject_concept_id,Yes,integer,"This field contains a Concept that represents the domain of the subjects that are members of the cohort (e.g., Person, Provider, Visit).",,No,Yes,CONCEPT,CONCEPT_ID,,,
COHORT_DEFINITION,cohort_initiation_date,No,date,A date to indicate when the Cohort was initiated in the COHORT table.,,No,No,,,,,
ATTRIBUTE_DEFINITION,attribute_definition_id,Yes,integer,,,No,No,,,,,
ATTRIBUTE_DEFINITION,attribute_name,Yes,varchar(255),,,No,No,,,,,
ATTRIBUTE_DEFINITION,attribute_description,No,varchar(MAX),,,No,No,,,,,
ATTRIBUTE_DEFINITION,attribute_type_concept_id,Yes,integer,,,No,Yes,CONCEPT,CONCEPT_ID,,,
ATTRIBUTE_DEFINITION,attribute_syntax,No,varchar(MAX),,,No,No,,,,,

1 cdmTableName cdmFieldName isRequired cdmDatatype userGuidance etlConventions isPrimaryKey isForeignKey fkTableName fkFieldName fkDomain fkClass unique DQ identifiers
2 PERSON person_id Yes integer It is assumed that every person with a different unique identifier is in fact a different person and should be treated independently. Any person linkage that needs to occur to uniquely identify Persons ought to be done prior to writing this table. This identifier can be the original id from the source data provided if it is an integer, otherwise it can be an autogenerated number. Yes No
3 PERSON gender_concept_id Yes integer This field is meant to capture the biological sex at birth of the Person. This field should not be used to study gender identity issues. Use the gender or sex value present in the data under the assumption that it is the biological sex at birth. If the source data captures gender identity it should be stored in the [OBSERVATION](https://ohdsi.github.io/CommonDataModel/cdm531.html#observation) table. [Accepted gender concepts](http://athena.ohdsi.org/search-terms/terms?domain=Gender&standardConcept=Standard&page=1&pageSize=15&query=) No Yes CONCEPT CONCEPT_ID Gender
4 PERSON year_of_birth Yes integer Compute age using year_of_birth. For data sources with date of birth, the year should be extracted. For data sources where the year of birth is not available, the approximate year of birth could be derived based on age group categorization, if available. No No
5 PERSON month_of_birth No integer For data sources that provide the precise date of birth, the month should be extracted and stored in this field. No No
6 PERSON day_of_birth No integer For data sources that provide the precise date of birth, the day should be extracted and stored in this field. No No
7 PERSON birth_datetime No datetime This field is not required but highly encouraged. For data sources that provide the precise datetime of birth, that value should be stored in this field. If birth_datetime is not provided in the source, use the following logic to infer the date: If day_of_birth is null and month_of_birth is not null then use the first of the month in that year. If month_of_birth is null or if day_of_birth AND month_of_birth are both null and the person has records during their year of birth then use the date of the earliest record, otherwise use the 15th of June of that year. If time of birth is not given use midnight (00:00:0000). No No
8 PERSON race_concept_id Yes integer This field captures race or ethnic background of the person. Only use this field if you have information about race or ethnic background. The Vocabulary contains Concepts about the main races and ethnic backgrounds in a hierarchical system. Due to the imprecise nature of human races and ethnic backgrounds, this is not a perfect system. Mixed races are not supported. If a clear race or ethnic background cannot be established, use Concept_Id 0. [Accepted Race Concepts](http://athena.ohdsi.org/search-terms/terms?domain=Race&standardConcept=Standard&page=1&pageSize=15&query=). No Yes CONCEPT CONCEPT_ID Race
9 PERSON ethnicity_concept_id Yes integer This field captures Ethnicity as defined by the Office of Management and Budget (OMB) of the US Government: it distinguishes only between "Hispanic" and "Not Hispanic". Races and ethnic backgrounds are not stored here. Only use this field if you have US-based data and a source of this information. Do not attempt to infer Ethnicity from the race or ethnic background of the Person. [Accepted ethnicity concepts](http://athena.ohdsi.org/search-terms/terms?domain=Ethnicity&standardConcept=Standard&page=1&pageSize=15&query=) No Yes CONCEPT CONCEPT_ID Ethnicity
10 PERSON location_id No integer The location refers to the physical address of the person. This field should capture the last known location of the person. Put the location_id from the [LOCATION](https://ohdsi.github.io/CommonDataModel/cdm531.html#location) table here that represents the most granular location information for the person. This could represent anything from postal code or parts thereof, state, or county for example. Since many databases contain deidentified data, it is common that the precision of the location is reduced to prevent re-identification. This field should capture the last known location. No Yes LOCATION LOCATION_ID
11 PERSON provider_id No integer The Provider refers to the last known primary care provider (General Practitioner). Put the provider_id from the [PROVIDER](https://ohdsi.github.io/CommonDataModel/cdm531.html#provider) table of the last known general practitioner of the person. If there are multiple providers, it is up to the ETL to decide which to put here. No Yes PROVIDER PROVIDER_ID
12 PERSON care_site_id No integer The Care Site refers to where the Provider typically provides the primary care. No Yes CARE_SITE CARE_SITE_ID
13 PERSON person_source_value No varchar(50) Use this field to link back to persons in the source data. This is typically used for error checking of ETL logic. Some use cases require the ability to link back to persons in the source data. This field allows for the storing of the person value as it appears in the source. This field is not required but strongly recommended. No No
14 PERSON gender_source_value No varchar(50) This field is used to store the biological sex of the person from the source data. It is not intended for use in standard analytics but for reference only. Put the biological sex of the person as it appears in the source data. No No
15 PERSON gender_source_concept_id No integer Due to the small number of options, this tends to be zero. If the source data codes biological sex in a non-standard vocabulary, store the concept_id here. No Yes CONCEPT CONCEPT_ID
16 PERSON race_source_value No varchar(50) This field is used to store the race of the person from the source data. It is not intended for use in standard analytics but for reference only. Put the race of the person as it appears in the source data. No No
17 PERSON race_source_concept_id No integer Due to the small number of options, this tends to be zero. If the source data codes race in an OMOP supported vocabulary store the concept_id here. No Yes CONCEPT CONCEPT_ID
18 PERSON ethnicity_source_value No varchar(50) This field is used to store the ethnicity of the person from the source data. It is not intended for use in standard analytics but for reference only. If the person has an ethnicity other than the OMB standard of "Hispanic" or "Not Hispanic" store that value from the source data here. No No
19 PERSON ethnicity_source_concept_id No integer Due to the small number of options, this tends to be zero. If the source data codes ethnicity in an OMOP supported vocabulary, store the concept_id here. No Yes CONCEPT CONCEPT_ID
20 OBSERVATION_PERIOD observation_period_id Yes integer A Person can have multiple discrete Observation Periods which are identified by the Observation_Period_Id. Assign a unique observation_period_id to each discrete Observation Period for a Person. Yes No
21 OBSERVATION_PERIOD person_id Yes integer The Person ID of the PERSON record for which the Observation Period is recorded. No Yes PERSON PERSON_ID
22 OBSERVATION_PERIOD observation_period_start_date Yes date Use this date to determine the start date of the Observation Period. It is often the case that the idea of Observation Periods does not exist in source data. In those cases, the observation_period_start_date can be inferred as the earliest Event date available for the Person. In insurance claim data, the Observation Period can be considered as the time period the Person is enrolled with a payer. If a Person switches plans but stays with the same payer, and therefore capturing of data continues, that change would be captured in [PAYER_PLAN_PERIOD](https://ohdsi.github.io/CommonDataModel/cdm531.html#payer_plan_period). No No
23 OBSERVATION_PERIOD observation_period_end_date Yes date Use this date to determine the end date of the period for which we can assume that all events for a Person are recorded. It is often the case that the idea of Observation Periods does not exist in source data. In those cases, the observation_period_end_date can be inferred as the last Event date available for the Person. In insurance claim data, the Observation Period can be considered as the time period the Person is enrolled with a payer. No No
24 OBSERVATION_PERIOD period_type_concept_id Yes integer This field can be used to determine the provenance of the Observation Period as in whether the period was determined from an insurance enrollment file, EHR healthcare encounters, or other sources. Choose the observation_period_type_concept_id that best represents how the period was determined. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Type+Concept&standardConcept=Standard&page=1&pageSize=15&query=). No Yes CONCEPT CONCEPT_ID Type Concept
25 VISIT_OCCURRENCE visit_occurrence_id Yes integer Use this to identify unique interactions between a person and the health care system. This identifier links across the other CDM event tables to associate events with a visit. This should be populated by creating a unique identifier for each unique interaction between a person and the healthcare system where the person receives a medical good or service over a span of time. Yes No
26 VISIT_OCCURRENCE person_id Yes integer No Yes PERSON PERSON_ID
27 VISIT_OCCURRENCE visit_concept_id Yes integer This field contains a concept id representing the kind of visit, like inpatient or outpatient. All concepts in this field should be standard and belong to the Visit domain. Populate this field based on the kind of visit that took place for the person. For example this could be "Inpatient Visit", "Outpatient Visit", "Ambulatory Visit", etc. This table will contain standard concepts in the Visit domain. These concepts are arranged in a hierarchical structure to facilitate cohort definitions by rolling up to generally familiar Visits adopted in most healthcare systems worldwide. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Visit&standardConcept=Standard&page=1&pageSize=15&query=). No Yes CONCEPT CONCEPT_ID Visit
28 VISIT_OCCURRENCE visit_start_date Yes date For inpatient visits, the start date is typically the admission date. For outpatient visits the start date and end date will be the same. When populating VISIT_START_DATE, you should think about the patient experience to make decisions on how to define visits. In the case of an inpatient visit this should be the date the patient was admitted to the hospital or institution. In all other cases this should be the date of the patient-provider interaction. No No
29 VISIT_OCCURRENCE visit_start_datetime No datetime If no time is given for the start date of a visit, set it to midnight (00:00:0000). No No
30 VISIT_OCCURRENCE visit_end_date Yes date For inpatient visits the end date is typically the discharge date. Visit end dates are mandatory. If end dates are not provided in the source there are three ways in which to derive them: - Outpatient Visit: visit_end_datetime = visit_start_datetime - Emergency Room Visit: visit_end_datetime = visit_start_datetime - Inpatient Visit: Usually there is information about discharge. If not, you should be able to derive the end date from the sudden decline of activity or from the absence of inpatient procedures/drugs. - Non-hospital institution Visits: Particularly for claims data, if end dates are not provided assume the visit is for the duration of month that it occurs. For Inpatient Visits ongoing at the date of ETL, put date of processing the data into visit_end_datetime and visit_type_concept_id with 32220 "Still patient" to identify the visit as incomplete. - All other Visits: visit_end_datetime = visit_start_datetime. If this is a one-day visit the end date should match the start date. No No
31 VISIT_OCCURRENCE visit_end_datetime No datetime If no time is given for the end date of a visit, set it to midnight (00:00:0000). No No
32 VISIT_OCCURRENCE visit_type_concept_id Yes Integer Use this field to understand the provenance of the visit record, or where the record comes from. Populate this field based on the provenance of the visit record, as in whether it came from an EHR record or billing claim. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Type+Concept&standardConcept=Standard&page=1&pageSize=15&query=). No Yes CONCEPT CONCEPT_ID Type Concept
33 VISIT_OCCURRENCE provider_id No integer There will only be one provider per visit record and the ETL document should clearly state how they were chosen (attending, admitting, etc.). If there are multiple providers associated with a visit in the source, this can be reflected in the event tables (CONDITION_OCCURRENCE, PROCEDURE_OCCURRENCE, etc.) or in the VISIT_DETAIL table. If there are multiple providers associated with a visit, you will need to choose which one to put here. The additional providers can be stored in the [VISIT_DETAIL](https://ohdsi.github.io/CommonDataModel/cdm531.html#visit_detail) table. No Yes PROVIDER PROVIDER_ID
34 VISIT_OCCURRENCE care_site_id No integer This field provides information about the Care Site where the Visit took place. There should only be one Care Site associated with a Visit. No Yes CARE_SITE CARE_SITE_ID
35 VISIT_OCCURRENCE visit_source_value No varchar(50) This field houses the verbatim value from the source data representing the kind of visit that took place (inpatient, outpatient, emergency, etc.) If there is information about the kind of visit in the source data that value should be stored here. If a visit is an amalgamation of visits from the source then use a hierarchy to choose the visit source value, such as IP -> ER-> OP. This should line up with the logic chosen to determine how visits are created. No No
36 VISIT_OCCURRENCE visit_source_concept_id No integer If the visit source value is coded in the source data using an OMOP supported vocabulary put the concept id representing the source value here. No Yes CONCEPT CONCEPT_ID
37 VISIT_OCCURRENCE admitting_source_concept_id admitted_from_concept_id No integer Use this field to determine where the patient was admitted from. This concept is part of the visit domain and can indicate if a patient was admitted to the hospital from a long-term care facility, for example. Use this field to determine where the patient was admitted from. This concept is part of the visit domain and can indicate if a patient was admitted to the hospital from a long-term care facility, for example. If patient is admitted from home, set this field to zero. If available, map the admitted_from_source_value to a standard concept in the visit domain. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Visit&standardConcept=Standard&page=1&pageSize=15&query=). No Yes CONCEPT CONCEPT_ID Visit
38 VISIT_OCCURRENCE admitting_source_value admitted_from_source_value No varchar(50) This information may be called something different in the source data but the field is meant to contain a value indicating where a person was admitted from. Typically this applies only to visits that have a length of stay, like inpatient visits or long-term care visits. No No
39 VISIT_OCCURRENCE discharge_to_concept_id No integer Use this field to determine where the patient was discharged to after a visit. This concept is part of the visit domain and can indicate if a patient was discharged to home or sent to a long-term care facility, for example. Use this field to determine where the patient was discharged to after a visit. This concept is part of the visit domain and can indicate if a patient was discharged to home or sent to a long-term care facility, for example. If patient is discharged to home, set this field to zero. If available, map the discharge_to_source_value to a standard concept in the visit domain. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Visit&standardConcept=Standard&page=1&pageSize=15&query=). No Yes CONCEPT CONCEPT_ID Visit
40 VISIT_OCCURRENCE discharge_to_source_value No varchar(50) This information may be called something different in the source data but the field is meant to contain a value indicating where a person was discharged to after a visit, as in they went home or were moved to long-term care. Typically this applies only to visits that have a length of stay of a day or more. No No
41 VISIT_OCCURRENCE preceding_visit_occurrence_id No integer Use this field to find the visit that occurred for the person prior to the given visit. There could be a few days or a few years in between. This field can be used to link a visit immediately preceding the current visit. Note this is not symmetrical, and there is no such thing as a "following_visit_id". No Yes VISIT_OCCURRENCE VISIT_OCCURRENCE_ID
42 VISIT_DETAIL visit_detail_id Yes integer Use this to identify unique interactions between a person and the health care system. This identifier links across the other CDM event tables to associate events with a visit detail. This should be populated by creating a unique identifier for each unique interaction between a person and the healthcare system where the person receives a medical good or service over a span of time. Yes No
43 VISIT_DETAIL person_id Yes integer No Yes PERSON PERSON_ID
44 VISIT_DETAIL visit_detail_concept_id Yes integer This field contains a concept id representing the kind of visit detail, like inpatient or outpatient. All concepts in this field should be standard and belong to the Visit domain. Populate this field based on the kind of visit that took place for the person. For example this could be "Inpatient Visit", "Outpatient Visit", "Ambulatory Visit", etc. This table will contain standard concepts in the Visit domain. These concepts are arranged in a hierarchical structure to facilitate cohort definitions by rolling up to generally familiar Visits adopted in most healthcare systems worldwide. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Visit&standardConcept=Standard&page=1&pageSize=15&query=). No Yes CONCEPT CONCEPT_ID Visit
45 VISIT_DETAIL visit_detail_start_date Yes date This is the date of the start of the encounter. This may or may not be equal to the date of the Visit the Visit Detail is associated with. When populating VISIT_DETAIL_START_DATE, you should think about the patient experience to make decisions on how to define visits. Most likely this should be the date of the patient-provider interaction. No No
46 VISIT_DETAIL visit_detail_start_datetime No datetime If no time is given for the start date of a visit, set it to midnight (00:00:0000). No No
47 VISIT_DETAIL visit_detail_end_date Yes date This the end date of the patient-provider interaction. Visit Detail end dates are mandatory. If end dates are not provided in the source there are three ways in which to derive them:<br> - Outpatient Visit Detail: visit_detail_end_datetime = visit_detail_start_datetime - Emergency Room Visit Detail: visit_detail_end_datetime = visit_detail_start_datetime - Inpatient Visit Detail: Usually there is information about discharge. If not, you should be able to derive the end date from the sudden decline of activity or from the absence of inpatient procedures/drugs. - Non-hospital institution Visit Details: Particularly for claims data, if end dates are not provided assume the visit is for the duration of month that it occurs.<br> For Inpatient Visit Details ongoing at the date of ETL, put date of processing the data into visit_detai_end_datetime and visit_detail_type_concept_id with 32220 "Still patient" to identify the visit as incomplete. All other Visits Details: visit_detail_end_datetime = visit_detail_start_datetime. No No
48 VISIT_DETAIL visit_detail_end_datetime No datetime If no time is given for the end date of a visit, set it to midnight (00:00:0000). No No
49 VISIT_DETAIL visit_detail_type_concept_id Yes integer Use this field to understand the provenance of the visit detail record, or where the record comes from. Populate this field based on the provenance of the visit detail record, as in whether it came from an EHR record or billing claim. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Type+Concept&standardConcept=Standard&page=1&pageSize=15&query=). No Yes CONCEPT CONCEPT_ID Type Concept
50 VISIT_DETAIL provider_id No integer There will only be one provider per **visit** record and the ETL document should clearly state how they were chosen (attending, admitting, etc.). This is a typical reason for leveraging the VISIT_DETAIL table as even though each VISIT_DETAIL record can only have one provider, there is no limit to the number of VISIT_DETAIL records that can be associated to a VISIT_OCCURRENCE record. The additional providers associated to a Visit can be stored in this table where each VISIT_DETAIL record represents a different provider. No Yes PROVIDER PROVIDER_ID
51 VISIT_DETAIL care_site_id No integer This field provides information about the Care Site where the Visit Detail took place. There should only be one Care Site associated with a Visit Detail. No Yes CARE_SITE CARE_SITE_ID
52 VISIT_DETAIL visit_detail_source_value No varchar(50) This field houses the verbatim value from the source data representing the kind of visit detail that took place (inpatient, outpatient, emergency, etc.) If there is information about the kind of visit detail in the source data that value should be stored here. If a visit is an amalgamation of visits from the source then use a hierarchy to choose the VISIT_DETAIL_SOURCE_VALUE, such as IP -> ER-> OP. This should line up with the logic chosen to determine how visits are created. No No
53 VISIT_DETAIL visit_detail_source_concept_id No Integer If the VISIT_DETAIL_SOURCE_VALUE is coded in the source data using an OMOP supported vocabulary put the concept id representing the source value here. No Yes CONCEPT CONCEPT_ID
54 VISIT_DETAIL admitting_source_value admitted_from_source_value No Varchar(50) This information may be called something different in the source data but the field is meant to contain a value indicating where a person was admitted from. Typically this applies only to visits that have a length of stay, like inpatient visits or long-term care visits. No No
55 VISIT_DETAIL admitting_source_concept_id admitted_from_concept_id No Integer Use this field to determine where the patient was admitted from. This concept is part of the visit domain and can indicate if a patient was admitted to the hospital from a long-term care facility, for example. Use this field to determine where the patient was admitted from. This concept is part of the visit domain and can indicate if a patient was admitted to the hospital from a long-term care facility, for example. If patient is admitted from home, set this field to zero. If available, map the admitted_from_source_value to a standard concept in the visit domain. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Visit&standardConcept=Standard&page=1&pageSize=15&query=). No Yes CONCEPT CONCEPT_ID Visit
56 VISIT_DETAIL discharge_to_source_value No Varchar(50) This information may be called something different in the source data but the field is meant to contain a value indicating where a person was discharged to after a visit, as in they went home or were moved to long-term care. Typically this applies only to visits that have a length of stay of a day or more. No No
57 VISIT_DETAIL discharge_to_concept_id No integer Use this field to determine where the patient was discharged to after a visit detail record. This concept is part of the visit domain and can indicate if a patient was discharged to home or sent to a long-term care facility, for example. Use this field to determine where the patient was discharged to after a visit detail record. This concept is part of the visit domain and can indicate if a patient was discharged to home or sent to a long-term care facility, for example. If patient is discharged to home, set this field to zero. If available, map the DISCHARGE_TO_SOURCE_VALUE to a Standard Concept in the Visit domain. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Visit&standardConcept=Standard&page=1&pageSize=15&query=). No Yes CONCEPT CONCEPT_ID Visit
58 VISIT_DETAIL preceding_visit_detail_id No integer Use this field to find the visit detail that occurred for the person prior to the given visit detail record. There could be a few days or a few years in between. The PRECEDING_VISIT_DETAIL_ID can be used to link a visit immediately preceding the current Visit Detail. Note this is not symmetrical, and there is no such thing as a "following_visit_id". No Yes VISIT_DETAIL VISIT_DETAIL_ID
59 VISIT_DETAIL visit_detail_parent_id No integer Use this field to find the visit detail that subsumes the given visit detail record. This is used in the case that a visit detail record needs to be nested beyond the VISIT_OCCURRENCE/VISIT_DETAIL relationship. If there are multiple nested levels to how Visits are represented in the source, the VISIT_DETAIL_PARENT_ID can be used to record this relationship. No Yes VISIT_DETAIL VISIT_DETAIL_ID
60 VISIT_DETAIL visit_occurrence_id Yes integer Use this field to link the VISIT_DETAIL record to its VISIT_OCCURRENCE. Put the VISIT_OCCURRENCE_ID that subsumes the VISIT_DETAIL record here. No Yes VISIT_OCCURRENCE VISIT_OCCURRENCE_ID
61 CONDITION_OCCURRENCE condition_occurrence_id Yes integer The unique key given to a condition record for a person. Refer to the ETL for how duplicate conditions during the same visit were handled. Each instance of a condition present in the source data should be assigned this unique key. In some cases, a person can have multiple records of the same condition within the same visit. It is valid to keep these duplicates and assign them individual, unique, CONDITION_OCCURRENCE_IDs, though it is up to the ETL how they should be handled. Yes No
62 CONDITION_OCCURRENCE person_id Yes integer The PERSON_ID of the PERSON for whom the condition is recorded. No Yes PERSON PERSON_ID
63 CONDITION_OCCURRENCE condition_concept_id Yes integer The CONDITION_CONCEPT_ID field is recommended for primary use in analyses, and must be used for network studies. This is the standard concept mapped from the source value which represents a condition The CONCEPT_ID that the CONDITION_SOURCE_VALUE maps to. Only records whose source values map to concepts with a domain of "Condition" should go in this table. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Condition&standardConcept=Standard&page=1&pageSize=15&query=). No Yes CONCEPT CONCEPT_ID Condition
64 CONDITION_OCCURRENCE condition_start_date Yes date Use this date to determine the start date of the condition Most often data sources do not have the idea of a start date for a condition. Rather, if a source only has one date associated with a condition record it is acceptable to use that date for both the CONDITION_START_DATE and the CONDITION_END_DATE. No No
65 CONDITION_OCCURRENCE condition_start_datetime No datetime If a source does not specify datetime the convention is to set the time to midnight (00:00:0000) No No
66 CONDITION_OCCURRENCE condition_end_date No date Use this date to determine the end date of the condition Most often data sources do not have the idea of a start date for a condition. Rather, if a source only has one date associated with a condition record it is acceptable to use that date for both the CONDITION_START_DATE and the CONDITION_END_DATE. No No
67 CONDITION_OCCURRENCE condition_end_datetime No datetime If a source does not specify datetime the convention is to set the time to midnight (00:00:0000) No No
68 CONDITION_OCCURRENCE condition_type_concept_id Yes integer This field can be used to determine the provenance of the Condition record, as in whether the condition was from an EHR system, insurance claim, registry, or other sources. Choose the CONDITION_TYPE_CONCEPT_ID that best represents the provenance of the record. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Type+Concept&standardConcept=Standard&page=1&pageSize=15&query=). No Yes CONCEPT CONCEPT_ID Type Concept
69 CONDITION_OCCURRENCE condition_status_concept_id No integer This concept represents the point during the visit the diagnosis was given (admitting diagnosis, final diagnosis), whether the diagnosis was determined due to laboratory findings, if the diagnosis was exclusionary, or if it was a preliminary diagnosis, among others. Choose the Concept in the Condition Status domain that best represents the point during the visit when the diagnosis was given. These can include admitting diagnosis, principal diagnosis, and secondary diagnosis. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Condition+Status&standardConcept=Standard&page=1&pageSize=15&query=). No Yes CONCEPT CONCEPT_ID Condition Status
70 CONDITION_OCCURRENCE stop_reason No varchar(20) The Stop Reason indicates why a Condition is no longer valid with respect to the purpose within the source data. Note that a Stop Reason does not necessarily imply that the condition is no longer occurring. This information is often not populated in source data and it is a valid etl choice to leave it blank if the information does not exist. No No
71 CONDITION_OCCURRENCE provider_id No integer The provider associated with condition record, e.g. the provider who made the diagnosis or the provider who recorded the symptom. The ETL may need to make a choice as to which PROVIDER_ID to put here. Based on what is available this may or may not be different than the provider associated with the overall VISIT_OCCURRENCE record, for example the admitting vs attending physician on an EHR record. No Yes PROVIDER PROVIDER_ID
72 CONDITION_OCCURRENCE visit_occurrence_id No integer The visit during which the condition occurred. Depending on the structure of the source data, this may have to be determined based on dates. If a CONDITION_START_DATE occurs within the start and end date of a Visit it is a valid ETL choice to choose the VISIT_OCCURRENCE_ID from the Visit that subsumes it, even if not explicitly stated in the data. While not required, an attempt should be made to locate the VISIT_OCCURRENCE_ID of the CONDITION_OCCURRENCE record. No Yes VISIT_OCCURRENCE VISIT_OCCURRENCE_ID
73 CONDITION_OCCURRENCE visit_detail_id No integer The VISIT_DETAIL record during which the condition occurred. For example, if the person was in the ICU at the time of the diagnosis the VISIT_OCCURRENCE record would reflect the overall hospital stay and the VISIT_DETAIL record would reflect the ICU stay during the hospital visit. Same rules apply as for the VISIT_OCCURRENCE_ID. No Yes VISIT_DETAIL VISIT_DETAIL_ID
74 CONDITION_OCCURRENCE condition_source_value No varchar(50) This field houses the verbatim value from the source data representing the condition that occurred. For example, this could be an ICD10 or Read code. This code is mapped to a Standard Condition Concept in the Standardized Vocabularies and the original code is stored here for reference. No No
75 CONDITION_OCCURRENCE condition_source_concept_id No integer This is the concept representing the condition source value and may not necessarily be standard. This field is discouraged from use in analysis because it is not required to contain Standard Concepts that are used across the OHDSI community, and should only be used when Standard Concepts do not adequately represent the source detail for the Condition necessary for a given analytic use case. Consider using CONDITION_CONCEPT_ID instead to enable standardized analytics that can be consistent across the network. If the CONDITION_SOURCE_VALUE is coded in the source data using an OMOP supported vocabulary put the concept id representing the source value here. No Yes CONCEPT CONCEPT_ID
76 CONDITION_OCCURRENCE condition_status_source_value No varchar(50) This field houses the verbatim value from the source data representing the condition status. This information may be called something different in the source data but the field is meant to contain a value indicating when and how a diagnosis was given to a patient. This source value is mapped to a standard concept which is stored in the CONDITION_STATUS_CONCEPT_ID field. No No
77 DRUG_EXPOSURE drug_exposure_id Yes integer The unique key given to records of drug dispensings or administrations for a person. Refer to the ETL for how duplicate drugs during the same visit were handled. Each instance of a drug dispensing or administration present in the source data should be assigned this unique key. In some cases, a person can have multiple records of the same drug within the same visit. It is valid to keep these duplicates and assign them individual, unique, DRUG_EXPOSURE_IDs, though it is up to the ETL how they should be handled. Yes No
78 DRUG_EXPOSURE person_id Yes integer The PERSON_ID of the PERSON for whom the drug dispensing or administration is recorded. This may be a system generated code. No Yes PERSON PERSON_ID
79 DRUG_EXPOSURE drug_concept_id Yes integer The DRUG_CONCEPT_ID field is recommended for primary use in analyses, and must be used for network studies. This is the standard concept mapped from the source concept id which represents a drug product or molecule otherwise introduced to the body. The drug concepts can have a varying degree of information about drug strength and dose. This information is relevant in the context of quantity and administration information in the subsequent fields plus strength information from the DRUG_STRENGTH table, provided as part of the standard vocabulary download. The CONCEPT_ID that the DRUG_SOURCE_VALUE maps to. The concept id should be derived either from mapping from the source concept id or by picking the drug concept representing the most amount of detail you have. Records whose source values map to standard concepts with a domain of Drug should go in this table. When the Drug Source Value of the code cannot be translated into Standard Drug Concept IDs, a Drug exposure entry is stored with only the corresponding SOURCE_CONCEPT_ID and DRUG_SOURCE_VALUE and a DRUG_CONCEPT_ID of 0. The Drug Concept with the most detailed content of information is preferred during the mapping process. These are indicated in the CONCEPT_CLASS_ID field of the Concept and are recorded in the following order of precedence: 'Branded Pack', 'Clinical Pack', 'Branded Drug', 'Clinical Drug', 'Branded Drug Component', 'Clinical Drug Component', 'Branded Drug Form', 'Clinical Drug Form', and only if no other information is available 'Ingredient'. Note: If only the drug class is known, the DRUG_CONCEPT_ID field should contain 0. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Drug&standardConcept=Standard&page=1&pageSize=15&query=). No Yes CONCEPT CONCEPT_ID Drug
80 DRUG_EXPOSURE drug_exposure_start_date Yes date Use this date to determine the start date of the drug record. Valid entries include a start date of a prescription, the date a prescription was filled, or the date on which a Drug administration was recorded. It is a valid ETL choice to use the date the drug was ordered as the DRUG_EXPOSURE_START_DATE. No No
81 DRUG_EXPOSURE drug_exposure_start_datetime No datetime This is not required, though it is in v6. If a source does not specify datetime the convention is to set the time to midnight (00:00:0000) No No
82 DRUG_EXPOSURE drug_exposure_end_date Yes date The DRUG_EXPOSURE_END_DATE denotes the day the drug exposure ended for the patient. If this information is not explicitly available in the data, infer the end date using the following methods:<br><br> 1. Start first with duration or days supply using the calculation drug start date + days supply -1 day. 2. Use quantity divided by daily dose that you may obtain from the sig or a source field (or assumed daily dose of 1) for solid, indivisibile, drug products. If quantity represents ingredient amount, quantity divided by daily dose * concentration (from drug_strength) drug concept id tells you the dose form. 3. If it is an administration record, set drug end date equal to drug start date. If the record is a written prescription then set end date to start date + 29. If the record is a mail-order prescription set end date to start date + 89. The end date must be equal to or greater than the start date. Ibuprofen 20mg/mL oral solution concept tells us this is oral solution. Calculate duration as quantity (200 example) * daily dose (5mL) /concentration (20mg/mL) 200*5/20 = 50 days. [Examples by dose form](https://ohdsi.github.io/CommonDataModel/drug_dose.html) No No
83 DRUG_EXPOSURE drug_exposure_end_datetime No datetime This is not required, though it is in v6. If a source does not specify datetime the convention is to set the time to midnight (00:00:0000) No No
84 DRUG_EXPOSURE verbatim_end_date No date This is the end date of the drug exposure as it appears in the source data, if it is given Put the end date or discontinuation date as it appears from the source data or leave blank if unavailable. No No
85 DRUG_EXPOSURE drug_type_concept_id Yes integer You can use the TYPE_CONCEPT_ID to delineate between prescriptions written vs. prescriptions dispensed vs. medication history vs. patient-reported exposure, etc. Choose the drug_type_concept_id that best represents the provenance of the record, for example whether it came from a record of a prescription written or physician administered drug. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Type+Concept&standardConcept=Standard&page=1&pageSize=15&query=). No Yes CONCEPT CONCEPT_ID Type Concept
86 DRUG_EXPOSURE stop_reason No varchar(20) The reason a person stopped a medication as it is represented in the source. Reasons include regimen completed, changed, removed, etc. This field will be retired in v6.0. This information is often not populated in source data and it is a valid etl choice to leave it blank if the information does not exist. No No
87 DRUG_EXPOSURE refills No integer This is only filled in when the record is coming from a prescription written this field is meant to represent intended refills at time of the prescription. No No
88 DRUG_EXPOSURE quantity No float To find the dose form of a drug the RELATIONSHIP table can be used where the relationship_id is 'Has dose form'. If liquid, quantity stands for the total amount dispensed or ordered of ingredient in the units given by the drug_strength table. If the unit from the source data does not align with the unit in the DRUG_STRENGTH table the quantity should be converted to the correct unit given in DRUG_STRENGTH. For clinical drugs with fixed dose forms (tablets etc.) the quantity is the number of units/tablets/capsules prescribed or dispensed (can be partial, but then only 1/2 or 1/3, not 0.01). Clinical drugs with divisible dose forms (injections) the quantity is the amount of ingredient the patient got. For example, if the injection is 2mg/mL but the patient got 80mL then quantity is reported as 160. Quantified clinical drugs with divisible dose forms (prefilled syringes), the quantity is the amount of ingredient similar to clinical drugs. Please see [how to calculate drug dose](https://ohdsi.github.io/CommonDataModel/drug_dose.html) for more information. No No
89 DRUG_EXPOSURE days_supply No integer Days supply of the drug. This should be the verbatim days_supply as given on the prescription. If the drug is physician administered use duration end date if given or set to 1 as default if duration is not available. No No
90 DRUG_EXPOSURE sig No varchar(MAX) This is the verbatim instruction for the drug as written by the provider. Put the written out instructions for the drug as it is verbatim in the source, if available. No No
91 DRUG_EXPOSURE route_concept_id No integer The standard CONCEPT_ID that the ROUTE_SOURCE_VALUE maps to in the route domain. No Yes CONCEPT CONCEPT_ID Route
92 DRUG_EXPOSURE lot_number No varchar(50) No No
93 DRUG_EXPOSURE provider_id No integer The Provider associated with drug record, e.g. the provider who wrote the prescription or the provider who administered the drug. The ETL may need to make a choice as to which PROVIDER_ID to put here. Based on what is available this may or may not be different than the provider associated with the overall VISIT_OCCURRENCE record, for example the ordering vs administering physician on an EHR record. No Yes PROVIDER PROVIDER_ID
94 DRUG_EXPOSURE visit_occurrence_id No integer The Visit during which the drug was prescribed, administered or dispensed. To populate this field drug exposures must be explicitly initiated in the visit. No Yes VISIT_OCCURRENCE VISIT_OCCURRENCE_ID
95 DRUG_EXPOSURE visit_detail_id No integer The VISIT_DETAIL record during which the drug exposure occurred. For example, if the person was in the ICU at the time of the drug administration the VISIT_OCCURRENCE record would reflect the overall hospital stay and the VISIT_DETAIL record would reflect the ICU stay during the hospital visit. Same rules apply as for the VISIT_OCCURRENCE_ID. No Yes VISIT_DETAIL VISIT_DETAIL_ID
96 DRUG_EXPOSURE drug_source_value No varchar(50) This field houses the verbatim value from the source data representing the drug exposure that occurred. For example, this could be an NDC or Gemscript code. This code is mapped to a Standard Drug Concept in the Standardized Vocabularies and the original code is stored here for reference. No No
97 DRUG_EXPOSURE drug_source_concept_id No integer This is the concept representing the drug source value and may not necessarily be standard. This field is discouraged from use in analysis because it is not required to contain Standard Concepts that are used across the OHDSI community, and should only be used when Standard Concepts do not adequately represent the source detail for the Drug necessary for a given analytic use case. Consider using DRUG_CONCEPT_ID instead to enable standardized analytics that can be consistent across the network. If the DRUG_SOURCE_VALUE is coded in the source data using an OMOP supported vocabulary put the concept id representing the source value here. No Yes CONCEPT CONCEPT_ID
98 DRUG_EXPOSURE route_source_value No varchar(50) This field houses the verbatim value from the source data representing the drug route. This information may be called something different in the source data but the field is meant to contain a value indicating when and how a drug was given to a patient. This source value is mapped to a standard concept which is stored in the ROUTE_CONCEPT_ID field. No No
99 DRUG_EXPOSURE dose_unit_source_value No varchar(50) This field houses the verbatim value from the source data representing the dose unit of the drug given. This information may be called something different in the source data but the field is meant to contain a value indicating the unit of dosage of drug given to the patient. This is an older column and will be deprecated in an upcoming version. No No
100 PROCEDURE_OCCURRENCE procedure_occurrence_id Yes integer The unique key given to a procedure record for a person. Refer to the ETL for how duplicate procedures during the same visit were handled. Each instance of a procedure occurrence in the source data should be assigned this unique key. In some cases, a person can have multiple records of the same procedure within the same visit. It is valid to keep these duplicates and assign them individual, unique, PROCEDURE_OCCURRENCE_IDs, though it is up to the ETL how they should be handled. Yes No
101 PROCEDURE_OCCURRENCE person_id Yes integer The PERSON_ID of the PERSON for whom the procedure is recorded. This may be a system generated code. No Yes PERSON PERSON_ID
102 PROCEDURE_OCCURRENCE procedure_concept_id Yes integer The PROCEDURE_CONCEPT_ID field is recommended for primary use in analyses, and must be used for network studies. This is the standard concept mapped from the source value which represents a procedure The CONCEPT_ID that the PROCEDURE_SOURCE_VALUE maps to. Only records whose source values map to standard concepts with a domain of "Procedure" should go in this table. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Procedure&standardConcept=Standard&page=1&pageSize=15&query=). No Yes CONCEPT CONCEPT_ID Procedure
103 PROCEDURE_OCCURRENCE procedure_date Yes date Use this date to determine the date the procedure occurred. If a procedure lasts more than a day, then it should be recorded as a separate record for each day the procedure occurred, this logic is in lieu of the procedure_end_date, which will be added in a future version of the CDM. No No
104 PROCEDURE_OCCURRENCE procedure_datetime No datetime This is not required, though it is in v6. If a source does not specify datetime the convention is to set the time to midnight (00:00:0000) No No
105 PROCEDURE_OCCURRENCE procedure_type_concept_id Yes integer This field can be used to determine the provenance of the Procedure record, as in whether the procedure was from an EHR system, insurance claim, registry, or other sources. Choose the PROCEDURE_TYPE_CONCEPT_ID that best represents the provenance of the record, for example whether it came from an EHR record or billing claim. If a procedure is recorded as an EHR encounter, the PROCEDURE_TYPE_CONCEPT would be 'EHR encounter record'. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Type+Concept&standardConcept=Standard&page=1&pageSize=15&query=). No Yes CONCEPT CONCEPT_ID Type Concept
106 PROCEDURE_OCCURRENCE modifier_concept_id No integer The modifiers are intended to give additional information about the procedure but as of now the vocabulary is under review. It is up to the ETL to choose how to map modifiers if they exist in source data. These concepts are typically distinguished by 'Modifier' concept classes (e.g., 'CPT4 Modifier' as part of the 'CPT4' vocabulary). If there is more than one modifier on a record, one should be chosen that pertains to the procedure rather than provider. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?conceptClass=CPT4+Modifier&conceptClass=HCPCS+Modifier&vocabulary=CPT4&vocabulary=HCPCS&standardConcept=Standard&page=1&pageSize=15&query=). No Yes CONCEPT CONCEPT_ID
107 PROCEDURE_OCCURRENCE quantity No integer If the quantity value is omitted, a single procedure is assumed. If a Procedure has a quantity of '0' in the source, this should default to '1' in the ETL. If there is a record in the source it can be assumed the exposure occurred at least once No No
108 PROCEDURE_OCCURRENCE provider_id No integer The provider associated with the procedure record, e.g. the provider who performed the Procedure. The ETL may need to make a choice as to which PROVIDER_ID to put here. Based on what is available this may or may not be different than the provider associated with the overall VISIT_OCCURRENCE record, for example the admitting vs attending physician on an EHR record. No No PROVIDER PROVIDER_ID
109 PROCEDURE_OCCURRENCE visit_occurrence_id No integer The visit during which the procedure occurred. Depending on the structure of the source data, this may have to be determined based on dates. If a PROCEDURE_DATE occurs within the start and end date of a Visit it is a valid ETL choice to choose the VISIT_OCCURRENCE_ID from the Visit that subsumes it, even if not explicitly stated in the data. While not required, an attempt should be made to locate the VISIT_OCCURRENCE_ID of the PROCEDURE_OCCURRENCE record. No No VISIT_OCCURRENCE VISIT_OCCURRENCE_ID
110 PROCEDURE_OCCURRENCE visit_detail_id No integer The VISIT_DETAIL record during which the Procedure occurred. For example, if the Person was in the ICU at the time of the Procedure the VISIT_OCCURRENCE record would reflect the overall hospital stay and the VISIT_DETAIL record would reflect the ICU stay during the hospital visit. Same rules apply as for the VISIT_OCCURRENCE_ID. No No VISIT_DETAIL VISIT_DETAIL_ID
111 PROCEDURE_OCCURRENCE procedure_source_value No varchar(50) This field houses the verbatim value from the source data representing the procedure that occurred. For example, this could be an CPT4 or OPCS4 code. Use this value to look up the source concept id and then map the source concept id to a standard concept id. No No
112 PROCEDURE_OCCURRENCE procedure_source_concept_id No integer This is the concept representing the procedure source value and may not necessarily be standard. This field is discouraged from use in analysis because it is not required to contain Standard Concepts that are used across the OHDSI community, and should only be used when Standard Concepts do not adequately represent the source detail for the Procedure necessary for a given analytic use case. Consider using PROCEDURE_CONCEPT_ID instead to enable standardized analytics that can be consistent across the network. If the PROCEDURE_SOURCE_VALUE is coded in the source data using an OMOP supported vocabulary put the concept id representing the source value here. No No CONCEPT CONCEPT_ID
113 PROCEDURE_OCCURRENCE modifier_source_value No varchar(50) The original modifier code from the source is stored here for reference. No No
114 PROCEDURE_OCCURRENCE procedure_status_source_value No varchar(50) This field houses the verbatim value from the source data representing the procedure status (primary or secondary). This information may be called something different in the source data but the field is meant to contain a value indicating whether the procedure was the primary reason for performing a surgical operation, infusion, etc. This source value is mapped to a standard concept which is stored in the PROCEDURE_STATUS_CONCEPT_ID field.
115 PROCEDURE_OCCURRENCE procedure_status_concept_id Yes integer This concept represents if the procedure was the primary reason for the surgical operation, infusion, etc . Choose the Concept in the Procedure Status domain that best represents the status ( [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Condition+Status&standardConcept=Standard&page=1&pageSize=15&query=).
116 DEVICE_EXPOSURE device_exposure_id Yes integer The unique key given to records a person's exposure to a foreign physical object or instrument. Each instance of an exposure to a foreign object or device present in the source data should be assigned this unique key. Yes No
117 DEVICE_EXPOSURE person_id Yes integer No Yes PERSON PERSON_ID
118 DEVICE_EXPOSURE device_concept_id Yes integer The DEVICE_CONCEPT_ID field is recommended for primary use in analyses, and must be used for network studies. This is the standard concept mapped from the source concept id which represents a foreign object or instrument the person was exposed to. The CONCEPT_ID that the DEVICE_SOURCE_VALUE maps to. No Yes CONCEPT CONCEPT_ID Device
119 DEVICE_EXPOSURE device_exposure_start_date Yes date Use this date to determine the start date of the device record. Valid entries include a start date of a procedure to implant a device, the date of a prescription for a device, or the date of device administration. No No
120 DEVICE_EXPOSURE device_exposure_start_datetime No datetime This is not required, though it is in v6. If a source does not specify datetime the convention is to set the time to midnight (00:00:0000) No No
121 DEVICE_EXPOSURE device_exposure_end_date No date The DEVICE_EXPOSURE_END_DATE denotes the day the device exposure ended for the patient, if given. Put the end date or discontinuation date as it appears from the source data or leave blank if unavailable. No No
122 DEVICE_EXPOSURE device_exposure_end_datetime No datetime If a source does not specify datetime the convention is to set the time to midnight (00:00:0000) No No
123 DEVICE_EXPOSURE device_type_concept_id Yes integer You can use the TYPE_CONCEPT_ID to denote the provenance of the record, as in whether the record is from administrative claims or EHR. Choose the drug_type_concept_id that best represents the provenance of the record, for example whether it came from a record of a prescription written or physician administered drug. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Type+Concept&standardConcept=Standard&page=1&pageSize=15&query=). No Yes CONCEPT CONCEPT_ID Type Concept
124 DEVICE_EXPOSURE unique_device_id No varchar(255) This is the Unique Device Identification (UDI-DI) number for devices regulated by the FDA, if given. For medical devices that are regulated by the FDA, a Unique Device Identification (UDI) is provided if available in the data source and is recorded in the UNIQUE_DEVICE_ID field. No No
125 DEVICE_EXPOSURE production_id No varchar(255) This is the Production Identifier (UDI-PI) portion of the Unique Device Identification.
126 DEVICE_EXPOSURE quantity No integer No No
127 DEVICE_EXPOSURE provider_id No integer The Provider associated with device record, e.g. the provider who wrote the prescription or the provider who implanted the device. The ETL may need to make a choice as to which PROVIDER_ID to put here. Based on what is available this may or may not be different than the provider associated with the overall VISIT_OCCURRENCE record. No Yes PROVIDER PROVIDER_ID
128 DEVICE_EXPOSURE visit_occurrence_id No integer The Visit during which the device was prescribed or given. To populate this field device exposures must be explicitly initiated in the visit. No Yes VISIT_OCCURRENCE VISIT_OCCURRENCE_ID
129 DEVICE_EXPOSURE visit_detail_id No integer The Visit Detail during which the device was prescribed or given. To populate this field device exposures must be explicitly initiated in the visit detail record. No Yes VISIT_DETAIL VISIT_DETAIL_ID
130 DEVICE_EXPOSURE device_source_value No varchar(50) This field houses the verbatim value from the source data representing the device exposure that occurred. For example, this could be an NDC or Gemscript code. This code is mapped to a Standard Device Concept in the Standardized Vocabularies and the original code is stored here for reference. No No
131 DEVICE_EXPOSURE device_source_concept_id No integer This is the concept representing the device source value and may not necessarily be standard. This field is discouraged from use in analysis because it is not required to contain Standard Concepts that are used across the OHDSI community, and should only be used when Standard Concepts do not adequately represent the source detail for the Device necessary for a given analytic use case. Consider using DEVICE_CONCEPT_ID instead to enable standardized analytics that can be consistent across the network. If the DEVICE_SOURCE_VALUE is coded in the source data using an OMOP supported vocabulary put the concept id representing the source value here. No Yes CONCEPT CONCEPT_ID
132 DEVICE_EXPOSURE unit_concept_id No integer UNIT_SOURCE_VALUES should be mapped to a Standard Concept in the Unit domain that best represents the unit as given in the source data. There is no standardization requirement for units associated with DEVICE_CONCEPT_IDs, however, it is the responsibility of the ETL to choose the most plausible unit. If there is no unit associated with a Device record, set to NULL.
133 DEVICE_EXPOSURE unit_source_value No varchar(50) This field houses the verbatim value from the source data representing the unit of the Device. For example, blood transfusions are considered devices and can be given in mL quantities. This code is mapped to a Standard Condition Concept in the Standardized Vocabularies and the original code is stored here for reference. Using the blood transfusion example, blood transfusion is represented by the DEVICE_CONCEPT_ID and the unit (mL) would be housed in the UNIT_SOURCE_VALUE and mapped to a standard concept in the unit domain.
134 DEVICE_EXPOSURE unit_source_concept_id No integer This is the concept representing the UNIT_SOURCE_VALUE and may not necessarily be standard. This field is discouraged from use in analysis because it is not required to contain Standard Concepts that are used across the OHDSI community, and should only be used when Standard Concepts do not adequately represent the source detail for the Unit necessary for a given analytic use case. Consider using UNIT_CONCEPT_ID instead to enable standardized analytics that can be consistent across the network. If the UNIT_SOURCE_VALUE is coded in the source data using an OMOP supported vocabulary put the concept id representing the source value here.
135 MEASUREMENT measurement_id Yes integer The unique key given to a Measurement record for a Person. Refer to the ETL for how duplicate Measurements during the same Visit were handled. Each instance of a measurement present in the source data should be assigned this unique key. In some cases, a person can have multiple records of the same measurement within the same visit. It is valid to keep these duplicates and assign them individual, unique, MEASUREMENT_IDs, though it is up to the ETL how they should be handled. Yes No
136 MEASUREMENT person_id Yes integer The PERSON_ID of the Person for whom the Measurement is recorded. This may be a system generated code. No Yes PERSON PERSON_ID
137 MEASUREMENT measurement_concept_id Yes integer The MEASUREMENT_CONCEPT_ID field is recommended for primary use in analyses, and must be used for network studies. The CONCEPT_ID that the MEASUREMENT_SOURCE_CONCEPT_ID maps to. Only records whose SOURCE_CONCEPT_IDs map to Standard Concepts with a domain of "Measurement" should go in this table. No Yes CONCEPT CONCEPT_ID Measurement
138 MEASUREMENT measurement_date Yes date Use this date to determine the date of the measurement. If there are multiple dates in the source data associated with a record such as order_date, draw_date, and result_date, choose the one that is closest to the date the sample was drawn from the patient. No No
139 MEASUREMENT measurement_datetime No datetime This is not required, though it is in v6. If a source does not specify datetime the convention is to set the time to midnight (00:00:0000) No No
140 MEASUREMENT measurement_time No varchar(10) This is present for backwards compatibility and will be deprecated in an upcoming version. No No
141 MEASUREMENT measurement_type_concept_id Yes integer This field can be used to determine the provenance of the Measurement record, as in whether the measurement was from an EHR system, insurance claim, registry, or other sources. Choose the MEASUREMENT_TYPE_CONCEPT_ID that best represents the provenance of the record, for example whether it came from an EHR record or billing claim. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Type+Concept&standardConcept=Standard&page=1&pageSize=15&query=). No Yes CONCEPT CONCEPT_ID Type Concept
142 MEASUREMENT operator_concept_id No integer The meaning of Concept [4172703](https://athena.ohdsi.org/search-terms/terms/4172703) for '=' is identical to omission of a OPERATOR_CONCEPT_ID value. Since the use of this field is rare, it's important when devising analyses to not to forget testing for the content of this field for values different from =. Operators are <, <=, =, >=, > and these concepts belong to the 'Meas Value Operator' domain. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Meas+Value+Operator&standardConcept=Standard&page=1&pageSize=15&query=). No Yes CONCEPT CONCEPT_ID
143 MEASUREMENT value_as_number No float This is the numerical value of the Result of the Measurement, if available. Note that measurements such as blood pressures will be split into their component parts i.e. one record for systolic, one record for diastolic. If there is a negative value coming from the source, set the VALUE_AS_NUMBER to NULL, with the exception of the following Measurements (listed as LOINC codes):<br>- [1925-7](https://athena.ohdsi.org/search-terms/terms/3003396) Base excess in Arterial blood by calculation - [1927-3](https://athena.ohdsi.org/search-terms/terms/3002032) Base excess in Venous blood by calculation - [8632-2](https://athena.ohdsi.org/search-terms/terms/3006277) QRS-Axis - [11555-0](https://athena.ohdsi.org/search-terms/terms/3012501) Base excess in Blood by calculation - [1926-5](https://athena.ohdsi.org/search-terms/terms/3003129) Base excess in Capillary blood by calculation - [28638-5](https://athena.ohdsi.org/search-terms/terms/3004959) Base excess in Arterial cord blood by calculation [28639-3](https://athena.ohdsi.org/search-terms/terms/3007435) Base excess in Venous cord blood by calculation No No
144 MEASUREMENT value_as_concept_id No integer If the raw data gives a categorial result for measurements those values are captured and mapped to standard concepts in the 'Meas Value' domain. If the raw data provides categorial results as well as continuous results for measurements, it is a valid ETL choice to preserve both values. The continuous value should go in the VALUE_AS_NUMBER field and the categorical value should be mapped to a standard concept in the 'Meas Value' domain and put in the VALUE_AS_CONCEPT_ID field. This is also the destination for the 'Maps to value' relationship. No Yes CONCEPT CONCEPT_ID
145 MEASUREMENT unit_concept_id No integer There is currently no recommended unit for individual measurements, i.e. it is not mandatory to represent Hemoglobin a1C measurements as a percentage. UNIT_SOURCE_VALUES should be mapped to a Standard Concept in the Unit domain that best represents the unit as given in the source data. There is no standardization requirement for units associated with MEASUREMENT_CONCEPT_IDs, however, it is the responsibility of the ETL to choose the most plausible unit. No Yes CONCEPT CONCEPT_ID Unit
146 MEASUREMENT range_low No float Ranges have the same unit as the VALUE_AS_NUMBER. These ranges are provided by the source and should remain NULL if not given. If reference ranges for upper and lower limit of normal as provided (typically by a laboratory) these are stored in the RANGE_HIGH and RANGE_LOW fields. This should be set to NULL if not provided. No No
147 MEASUREMENT range_high No float Ranges have the same unit as the VALUE_AS_NUMBER. These ranges are provided by the source and should remain NULL if not given. If reference ranges for upper and lower limit of normal as provided (typically by a laboratory) these are stored in the RANGE_HIGH and RANGE_LOW fields. This should be set to NULL if not provided. No No
148 MEASUREMENT provider_id No integer The provider associated with measurement record, e.g. the provider who ordered the test or the provider who recorded the result. The ETL may need to make a choice as to which PROVIDER_ID to put here. Based on what is available this may or may not be different than the provider associated with the overall VISIT_OCCURRENCE record. For example the admitting vs attending physician on an EHR record. No Yes PROVIDER PROVIDER_ID
149 MEASUREMENT visit_occurrence_id No integer The visit during which the Measurement occurred. Depending on the structure of the source data, this may have to be determined based on dates. If a MEASUREMENT_DATE occurs within the start and end date of a Visit it is a valid ETL choice to choose the VISIT_OCCURRENCE_ID from the visit that subsumes it, even if not explicitly stated in the data. While not required, an attempt should be made to locate the VISIT_OCCURRENCE_ID of the measurement record. If a measurement is related to a visit explicitly in the source data, it is possible that the result date of the Measurement falls outside of the bounds of the Visit dates. No Yes VISIT_OCCURRENCE VISIT_OCCURRENCE_ID
150 MEASUREMENT visit_detail_id No integer The VISIT_DETAIL record during which the Measurement occurred. For example, if the Person was in the ICU at the time the VISIT_OCCURRENCE record would reflect the overall hospital stay and the VISIT_DETAIL record would reflect the ICU stay during the hospital visit. Same rules apply as for the VISIT_OCCURRENCE_ID. No Yes VISIT_DETAIL VISIT_DETAIL_ID
151 MEASUREMENT measurement_source_value No varchar(50) This field houses the verbatim value from the source data representing the Measurement that occurred. For example, this could be an ICD10 or Read code. This code is mapped to a Standard Measurement Concept in the Standardized Vocabularies and the original code is stored here for reference. No No
152 MEASUREMENT measurement_source_concept_id No integer This is the concept representing the MEASUREMENT_SOURCE_VALUE and may not necessarily be standard. This field is discouraged from use in analysis because it is not required to contain Standard Concepts that are used across the OHDSI community, and should only be used when Standard Concepts do not adequately represent the source detail for the Measurement necessary for a given analytic use case. Consider using MEASUREMENT_CONCEPT_ID instead to enable standardized analytics that can be consistent across the network. If the MEASUREMENT_SOURCE_VALUE is coded in the source data using an OMOP supported vocabulary put the concept id representing the source value here. No Yes CONCEPT CONCEPT_ID
153 MEASUREMENT unit_source_value No varchar(50) This field houses the verbatim value from the source data representing the unit of the Measurement that occurred. This code is mapped to a Standard Condition Concept in the Standardized Vocabularies and the original code is stored here for reference. No No
154 MEASUREMENT value_source_value No varchar(50) This field houses the verbatim result value of the Measurement from the source data . If both a continuous and categorical result are given in the source data such that both VALUE_AS_NUMBER and VALUE_AS_CONCEPT_ID are both included, store the verbatim value that was mapped to VALUE_AS_CONCEPT_ID here. No No
155 OBSERVATION observation_id Yes integer The unique key given to an Observation record for a Person. Refer to the ETL for how duplicate Observations during the same Visit were handled. Each instance of an observation present in the source data should be assigned this unique key. Yes No
156 OBSERVATION person_id Yes integer The PERSON_ID of the Person for whom the Observation is recorded. This may be a system generated code. No Yes PERSON PERSON_ID
157 OBSERVATION observation_concept_id Yes integer The OBSERVATION_CONCEPT_ID field is recommended for primary use in analyses, and must be used for network studies. The CONCEPT_ID that the OBSERVATION_SOURCE_CONCEPT_ID maps to. There is no specified domain that the Concepts in this table must adhere to. The only rule is that records with Concepts in the Condition, Procedure, Drug, Measurement, or Device domains MUST go to the corresponding table. No Yes CONCEPT CONCEPT_ID
158 OBSERVATION observation_date Yes date The date of the Observation. Depending on what the Observation represents this could be the date of a lab test, the date of a survey, or the date a patient's family history was taken. For some observations the ETL may need to make a choice as to which date to choose. No No
159 OBSERVATION observation_datetime No datetime If no time is given set to midnight (00:00:00). No No
160 OBSERVATION observation_type_concept_id Yes integer This field can be used to determine the provenance of the Observation record, as in whether the measurement was from an EHR system, insurance claim, registry, or other sources. Choose the OBSERVATION_TYPE_CONCEPT_ID that best represents the provenance of the record, for example whether it came from an EHR record or billing claim. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Type+Concept&standardConcept=Standard&page=1&pageSize=15&query=). No Yes CONCEPT CONCEPT_ID Type Concept
161 OBSERVATION value_as_number No float This is the numerical value of the Result of the Observation, if applicable and available. It is not expected that all Observations will have numeric results, rather, this field is here to house values should they exist. No No
162 OBSERVATION value_as_string No varchar(60) This is the categorical value of the Result of the Observation, if applicable and available. No No
163 OBSERVATION value_as_concept_id No Integer It is possible that some records destined for the Observation table have two clinical ideas represented in one source code. This is common with ICD10 codes that describe a family history of some Condition, for example. In OMOP the Vocabulary breaks these two clinical ideas into two codes; one becomes the OBSERVATION_CONCEPT_ID and the other becomes the VALUE_AS_CONCEPT_ID. It is important when using the Observation table to keep this possibility in mind and to examine the VALUE_AS_CONCEPT_ID field for relevant information. Note that the value of VALUE_AS_CONCEPT_ID may be provided through mapping from a source Concept which contains the content of the Observation. In those situations, the CONCEPT_RELATIONSHIP table in addition to the 'Maps to' record contains a second record with the relationship_id set to 'Maps to value'. For example, ICD10 [Z82.4](https://athena.ohdsi.org/search-terms/terms/45581076) 'Family history of ischaemic heart disease and other diseases of the circulatory system' has a 'Maps to' relationship to [4167217](https://athena.ohdsi.org/search-terms/terms/4167217) 'Family history of clinical finding' as well as a 'Maps to value' record to [134057](https://athena.ohdsi.org/search-terms/terms/134057) 'Disorder of cardiovascular system'. No Yes CONCEPT CONCEPT_ID
164 OBSERVATION qualifier_concept_id No integer This field contains all attributes specifying the clinical fact further, such as as degrees, severities, drug-drug interaction alerts etc. Use your best judgement as to what Concepts to use here and if they are necessary to accurately represent the clinical record. There is no restriction on the domain of these Concepts, they just need to be Standard. No Yes CONCEPT CONCEPT_ID
165 OBSERVATION unit_concept_id No integer There is currently no recommended unit for individual observation concepts. UNIT_SOURCE_VALUES should be mapped to a Standard Concept in the Unit domain that best represents the unit as given in the source data. There is no standardization requirement for units associated with OBSERVATION_CONCEPT_IDs, however, it is the responsibility of the ETL to choose the most plausible unit. No Yes CONCEPT CONCEPT_ID Unit
166 OBSERVATION provider_id No integer The provider associated with the observation record, e.g. the provider who ordered the test or the provider who recorded the result. The ETL may need to make a choice as to which PROVIDER_ID to put here. Based on what is available this may or may not be different than the provider associated with the overall VISIT_OCCURRENCE record. For example the admitting vs attending physician on an EHR record. No Yes PROVIDER PROVIDER_ID
167 OBSERVATION visit_occurrence_id No integer The visit during which the Observation occurred. Depending on the structure of the source data, this may have to be determined based on dates. If an OBSERVATION_DATE occurs within the start and end date of a Visit it is a valid ETL choice to choose the VISIT_OCCURRENCE_ID from the visit that subsumes it, even if not explicitly stated in the data. While not required, an attempt should be made to locate the VISIT_OCCURRENCE_ID of the observation record. If an observation is related to a visit explicitly in the source data, it is possible that the result date of the Observation falls outside of the bounds of the Visit dates. No Yes VISIT_OCCURRENCE VISIT_OCCURRENCE_ID
168 OBSERVATION visit_detail_id No integer The VISIT_DETAIL record during which the Observation occurred. For example, if the Person was in the ICU at the time the VISIT_OCCURRENCE record would reflect the overall hospital stay and the VISIT_DETAIL record would reflect the ICU stay during the hospital visit. Same rules apply as for the VISIT_OCCURRENCE_ID. No Yes VISIT_DETAIL VISIT_DETAIL_ID
169 OBSERVATION observation_source_value No varchar(50) This field houses the verbatim value from the source data representing the Observation that occurred. For example, this could be an ICD10 or Read code. This code is mapped to a Standard Concept in the Standardized Vocabularies and the original code is stored here for reference. No No
170 OBSERVATION observation_source_concept_id No integer This is the concept representing the OBSERVATION_SOURCE_VALUE and may not necessarily be standard. This field is discouraged from use in analysis because it is not required to contain Standard Concepts that are used across the OHDSI community, and should only be used when Standard Concepts do not adequately represent the source detail for the Observation necessary for a given analytic use case. Consider using OBSERVATION_CONCEPT_ID instead to enable standardized analytics that can be consistent across the network. If the OBSERVATION_SOURCE_VALUE is coded in the source data using an OMOP supported vocabulary put the concept id representing the source value here. No Yes CONCEPT CONCEPT_ID
171 OBSERVATION unit_source_value No varchar(50) This field houses the verbatim value from the source data representing the unit of the Observation that occurred. This code is mapped to a Standard Condition Concept in the Standardized Vocabularies and the original code is stored here for reference. No No
172 OBSERVATION qualifier_source_value No varchar(50) This field houses the verbatim value from the source data representing the qualifier of the Observation that occurred. This code is mapped to a Standard Condition Concept in the Standardized Vocabularies and the original code is stored here for reference. No No
173 OBSERVATION value_source_value No varchar(50) This field houses the verbatim result value of the Observation from the source data. Do not get confused with the Observation_source_value which captures source value of the observation mapped to observation_concept_id. This field is the observation result value from the source. If the observation_source_value was a question, for example, or an observation that requires a result then this field is the answer/ result from the source data. Store the verbatim value that represents the result of the observation_source_value. No No
174 DEATH person_id Yes integer No Yes PERSON PERSON_ID
175 DEATH death_date Yes date The date the person was deceased. If the precise date include day or month is not known or not allowed, December is used as the default month, and the last day of the month the default day. No No
176 DEATH death_datetime No datetime If not available set time to midnight (00:00:00) No No
177 DEATH death_type_concept_id No integer This is the provenance of the death record, i.e., where it came from. It is possible that an administrative claims database would source death information from a government file so do not assume the Death Type is the same as the Visit Type, etc. Use the type concept that be reflects the source of the death record. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Type+Concept&standardConcept=Standard&page=1&pageSize=15&query=). No Yes CONCEPT CONCEPT_ID Type Concept
178 DEATH cause_concept_id No integer This is the Standard Concept representing the Person's cause of death, if available. There is no specified domain for this concept, just choose the Standard Concept Id that best represents the person's cause of death. No Yes CONCEPT CONCEPT_ID
179 DEATH cause_source_value No varchar(50) If available, put the source code representing the cause of death here. No No
180 DEATH cause_source_concept_id No integer If the cause of death was coded using a Vocabulary present in the OMOP Vocabularies put the CONCEPT_ID representing the cause of death here. No Yes CONCEPT CONCEPT_ID
181 NOTE note_id Yes integer A unique identifier for each note. Yes No
182 NOTE person_id Yes integer No Yes PERSON PERSON_ID
183 NOTE note_date Yes date The date the note was recorded. No No
184 NOTE note_datetime No datetime If time is not given set the time to midnight. No No
185 NOTE note_type_concept_id Yes integer The provenance of the note. Most likely this will be EHR. Put the source system of the note, as in EHR record. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?standardConcept=Standard&domain=Type+Concept&page=1&pageSize=15&query=). No Yes CONCEPT CONCEPT_ID Type Concept
186 NOTE note_class_concept_id Yes integer A Standard Concept Id representing the HL7 LOINC Document Type Vocabulary classification of the note. Map the note classification to a Standard Concept. For more information see the ETL Conventions in the description of the NOTE table. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?standardConcept=Standard&conceptClass=Doc+Kind&conceptClass=Doc+Role&conceptClass=Doc+Setting&conceptClass=Doc+Subject+Matter&conceptClass=Doc+Type+of+Service&domain=Meas+Value&page=1&pageSize=15&query=). This Concept can alternatively be represented by concepts with the relationship 'Kind of (LOINC)' to [706391](https://athena.ohdsi.org/search-terms/terms/706391) (Note). No Yes CONCEPT CONCEPT_ID
187 NOTE note_title No varchar(250) The title of the note. No No
188 NOTE note_text Yes varchar(MAX) The content of the note. No No
189 NOTE encoding_concept_id Yes integer This is the Concept representing the character encoding type. Put the Concept Id that represents the encoding character type here. Currently the only option is UTF-8 ([32678](https://athena.ohdsi.org/search-terms/terms/32678)). It the note is encoded in any other type, like ASCII then put 0. No Yes CONCEPT CONCEPT_ID
190 NOTE language_concept_id Yes integer The language of the note. Use Concepts that are descendants of the concept [4182347](https://athena.ohdsi.org/search-terms/terms/4182347) (World Languages). No Yes CONCEPT CONCEPT_ID
191 NOTE provider_id No integer The Provider who wrote the note. The ETL may need to make a determination on which provider to put here. No Yes PROVIDER PROVIDER_ID
192 NOTE visit_occurrence_id No integer The Visit during which the note was written. No Yes VISIT_OCCURRENCE VISIT_OCCURRENCE_ID
193 NOTE visit_detail_id No integer The Visit Detail during which the note was written. No Yes VISIT_DETAIL VISIT_DETAIL_ID
194 NOTE note_source_value No varchar(50) The source value mapped to the NOTE_CLASS_CONCEPT_ID. No No
195 NOTE_NLP note_nlp_id Yes integer A unique identifier for the NLP record. Yes No
196 NOTE_NLP note_id Yes integer This is the NOTE_ID for the NOTE record the NLP record is associated to. No No
197 NOTE_NLP section_concept_id No integer The SECTION_CONCEPT_ID should be used to represent the note section contained in the NOTE_NLP record. These concepts can be found as parts of document panels and are based on the type of note written, i.e. a discharge summary. These panels can be found as concepts with the relationship 'Subsumes' to CONCEPT_ID [45875957](https://athena.ohdsi.org/search-terms/terms/45875957). No Yes CONCEPT CONCEPT_ID
198 NOTE_NLP snippet No varchar(250) A small window of text surrounding the term No No
199 NOTE_NLP offset No varchar(50) Character offset of the extracted term in the input note No No
200 NOTE_NLP lexical_variant Yes varchar(250) Raw text extracted from the NLP tool. No No
201 NOTE_NLP note_nlp_concept_id No integer No Yes CONCEPT CONCEPT_ID
202 NOTE_NLP note_nlp_source_concept_id No integer No Yes CONCEPT CONCEPT_ID
203 NOTE_NLP nlp_system No varchar(250) Name and version of the NLP system that extracted the term. Useful for data provenance. No No
204 NOTE_NLP nlp_date Yes date The date of the note processing. No No
205 NOTE_NLP nlp_datetime No datetime The date and time of the note processing. No No
206 NOTE_NLP term_exists No varchar(1) Term_exists is defined as a flag that indicates if the patient actually has or had the condition. Any of the following modifiers would make Term_exists false: Negation = true Subject = [anything other than the patient] Conditional = true/li> Rule_out = true Uncertain = very low certainty or any lower certainties A complete lack of modifiers would make Term_exists true. No No
207 NOTE_NLP term_temporal No varchar(50) Term_temporal is to indicate if a condition is present or just in the past. The following would be past:<br><br> - History = true - Concept_date = anything before the time of the report No No
208 NOTE_NLP term_modifiers No varchar(2000) For the modifiers that are there, they would have to have these values:<br><br> - Negation = false - Subject = patient - Conditional = false - Rule_out = false - Uncertain = true or high or moderate or even low (could argue about low). Term_modifiers will concatenate all modifiers for different types of entities (conditions, drugs, labs etc) into one string. Lab values will be saved as one of the modifiers. No No
209 SPECIMEN specimen_id Yes integer Unique identifier for each specimen. Yes No
210 SPECIMEN person_id Yes integer The person from whom the specimen is collected. No Yes PERSON PERSON_ID
211 SPECIMEN specimen_concept_id Yes integer The standard CONCEPT_ID that the SPECIMEN_SOURCE_VALUE maps to in the specimen domain. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Specimen&standardConcept=Standard&page=1&pageSize=15&query=) No Yes CONCEPT CONCEPT_ID
212 SPECIMEN specimen_type_concept_id Yes integer Put the source of the specimen record, as in an EHR system. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?standardConcept=Standard&domain=Type+Concept&page=1&pageSize=15&query=). No Yes CONCEPT CONCEPT_ID Type Concept
213 SPECIMEN specimen_date Yes date The date the specimen was collected. No No
214 SPECIMEN specimen_datetime No datetime No No
215 SPECIMEN quantity No float The amount of specimen collected from the person. No No
216 SPECIMEN unit_concept_id No integer The unit for the quantity of the specimen. Map the UNIT_SOURCE_VALUE to a Standard Concept in the Unit domain. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Unit&standardConcept=Standard&page=1&pageSize=15&query=) No Yes CONCEPT CONCEPT_ID
217 SPECIMEN anatomic_site_concept_id No integer This is the site on the body where the specimen is from. Map the ANATOMIC_SITE_SOURCE_VALUE to a Standard Concept in the Spec Anatomic Site domain. This should be coded at the lowest level of granularity [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?standardConcept=Standard&domain=Spec+Anatomic+Site&conceptClass=Body+Structure&page=4&pageSize=15&query=) No Yes CONCEPT CONCEPT_ID
218 SPECIMEN disease_status_concept_id No integer No Yes CONCEPT CONCEPT_ID
219 SPECIMEN specimen_source_id No varchar(50) This is the identifier for the specimen from the source system. No No
220 SPECIMEN specimen_source_value No varchar(50) No No
221 SPECIMEN unit_source_value No varchar(50) This unit for the quantity of the specimen, as represented in the source. No No
222 SPECIMEN anatomic_site_source_value No varchar(50) This is the site on the body where the specimen was taken from, as represented in the source. No No
223 SPECIMEN disease_status_source_value No varchar(50) No No
225 FACT_RELATIONSHIP fact_id_1 Yes integer No No
226 FACT_RELATIONSHIP domain_concept_id_2 Yes integer No Yes CONCEPT CONCEPT_ID
227 FACT_RELATIONSHIP fact_id_2 Yes integer No No
228 FACT_RELATIONSHIP relationship_concept_id Yes integer No Yes CONCEPT CONCEPT_ID
229 LOCATION location_id Yes integer The unique key given to a unique Location. Each instance of a Location in the source data should be assigned this unique key. Yes No
230 LOCATION address_1 No varchar(50) This is the first line of the address. No No
231 LOCATION address_2 No varchar(50) This is the second line of the address No No
232 LOCATION city No varchar(50) No No
233 LOCATION state No varchar(2) No No
234 LOCATION zip No varchar(9) Zip codes are handled as strings of up to 9 characters length. For US addresses, these represent either a 3-digit abbreviated Zip code as provided by many sources for patient protection reasons, the full 5-digit Zip or the 9-digit (ZIP + 4) codes. Unless for specific reasons analytical methods should expect and utilize only the first 3 digits. For international addresses, different rules apply. No No
235 LOCATION county No varchar(20) No No
236 LOCATION location_source_value No varchar(50) Put the verbatim value for the location here, as it shows up in the source. No No
237 LOCATION country_concept_id No integer The Concept Id representing the country. Values should conform to the [Geography](https://athena.ohdsi.org/search-terms/terms?domain=Geography&standardConcept=Standard&page=1&pageSize=15&query=&boosts) domain.
238 LOCATION country_source_value No varchar(80) The name of the country.
239 LOCATION latitude No float Must be between -90 and 90.
240 LOCATION longitude No float Must be between -180 and 180.
241 CARE_SITE care_site_id Yes integer Assign an id to each unique combination of location_id and place_of_service_source_value Yes No
242 CARE_SITE care_site_name No varchar(255) The name of the care_site as it appears in the source data No No
243 CARE_SITE place_of_service_concept_id No integer This is a high-level way of characterizing a Care Site. Typically, however, Care Sites can provide care in multiple settings (inpatient, outpatient, etc.) and this granularity should be reflected in the visit. Choose the concept in the visit domain that best represents the setting in which healthcare is provided in the Care Site. If most visits in a Care Site are Inpatient, then the place_of_service_concept_id should represent Inpatient. If information is present about a unique Care Site (e.g. Pharmacy) then a Care Site record should be created. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Visit&standardConcept=Standard&page=2&pageSize=15&query=). No Yes CONCEPT CONCEPT_ID
244 CARE_SITE location_id No integer The location_id from the LOCATION table representing the physical location of the care_site. No Yes LOCATION LOCATION_ID
245 CARE_SITE care_site_source_value No varchar(50) The identifier of the care_site as it appears in the source data. This could be an identifier separate from the name of the care_site. No No
246 CARE_SITE place_of_service_source_value No varchar(50) Put the place of service of the care_site as it appears in the source data. No No
247 PROVIDER provider_id Yes integer It is assumed that every provider with a different unique identifier is in fact a different person and should be treated independently. This identifier can be the original id from the source data provided it is an integer, otherwise it can be an autogenerated number. Yes No
248 PROVIDER provider_name No varchar(255) This field is not necessary as it is not necessary to have the actual identity of the Provider. Rather, the idea is to uniquely and anonymously identify providers of care across the database. No No
249 PROVIDER npi No varchar(20) This is the National Provider Number issued to health care providers in the US by the Centers for Medicare and Medicaid Services (CMS). No No
250 PROVIDER dea No varchar(20) This is the identifier issued by the DEA, a US federal agency, that allows a provider to write prescriptions for controlled substances. No No
251 PROVIDER specialty_concept_id No integer This field either represents the most common specialty that occurs in the data or the most specific concept that represents all specialties listed, should the provider have more than one. This includes physician specialties such as internal medicine, emergency medicine, etc. and allied health professionals such as nurses, midwives, and pharmacists. If a Provider has more than one Specialty, there are two options: 1. Choose a concept_id which is a common ancestor to the multiple specialties, or, 2. Choose the specialty that occurs most often for the provider. Concepts in this field should be Standard with a domain of Provider. [Accepted Concepts](http://athena.ohdsi.org/search-terms/terms?domain=Provider&standardConcept=Standard&page=1&pageSize=15&query=). No Yes CONCEPT CONCEPT_ID
252 PROVIDER care_site_id No integer This is the CARE_SITE_ID for the location that the provider primarily practices in. If a Provider has more than one Care Site, the main or most often exerted CARE_SITE_ID should be recorded. No Yes CARE_SITE CARE_SITE_ID
253 PROVIDER year_of_birth No integer No No
254 PROVIDER gender_concept_id No integer This field represents the recorded gender of the provider in the source data. If given, put a concept from the gender domain representing the recorded gender of the provider. [Accepted Concepts](http://athena.ohdsi.org/search-terms/terms?domain=Gender&standardConcept=Standard&page=1&pageSize=15&query=). No Yes CONCEPT CONCEPT_ID Gender
255 PROVIDER provider_source_value No varchar(50) Use this field to link back to providers in the source data. This is typically used for error checking of ETL logic. Some use cases require the ability to link back to providers in the source data. This field allows for the storing of the provider identifier as it appears in the source. No No
256 PROVIDER specialty_source_value No varchar(50) This is the kind of provider or specialty as it appears in the source data. This includes physician specialties such as internal medicine, emergency medicine, etc. and allied health professionals such as nurses, midwives, and pharmacists. Put the kind of provider as it appears in the source data. This field is up to the discretion of the ETL-er as to whether this should be the coded value from the source or the text description of the lookup value. No No
257 PROVIDER specialty_source_concept_id No integer This is often zero as many sites use proprietary codes to store physician speciality. If the source data codes provider specialty in an OMOP supported vocabulary store the concept_id here. No Yes CONCEPT CONCEPT_ID
258 PROVIDER gender_source_value No varchar(50) This is provider's gender as it appears in the source data. Put the provider's gender as it appears in the source data. This field is up to the discretion of the ETL-er as to whether this should be the coded value from the source or the text description of the lookup value. No No
259 PROVIDER gender_source_concept_id No integer This is often zero as many sites use proprietary codes to store provider gender. If the source data codes provider gender in an OMOP supported vocabulary store the concept_id here. No Yes CONCEPT CONCEPT_ID
260 PAYER_PLAN_PERIOD payer_plan_period_id Yes integer A unique identifier for each unique combination of a Person, Payer, Plan, and Period of time. Yes Yes PERSON PERSON_ID
261 PAYER_PLAN_PERIOD person_id Yes integer The Person covered by the Plan. A single Person can have multiple, overlapping, PAYER_PLAN_PERIOD records No Yes PERSON PERSON_ID
262 PAYER_PLAN_PERIOD payer_plan_period_start_date Yes date Start date of Plan coverage. No No
263 PAYER_PLAN_PERIOD payer_plan_period_end_date Yes date End date of Plan coverage. No No
264 PAYER_PLAN_PERIOD payer_concept_id No integer This field represents the organization who reimburses the provider which administers care to the Person. Map the Payer directly to a standard CONCEPT_ID. If one does not exists please contact the vocabulary team. There is no global controlled vocabulary available for this information. The point is to stratify on this information and identify if Persons have the same payer, though the name of the Payer is not necessary. [Accepted Concepts](http://athena.ohdsi.org/search-terms/terms?domain=Payer&standardConcept=Standard&page=1&pageSize=15&query=). No Yes CONCEPT CONCEPT_ID
265 PAYER_PLAN_PERIOD payer_source_value No varchar(50) This is the Payer as it appears in the source data. No No
266 PAYER_PLAN_PERIOD payer_source_concept_id No integer If the source data codes the Payer in an OMOP supported vocabulary store the concept_id here. No Yes CONCEPT CONCEPT_ID
267 PAYER_PLAN_PERIOD plan_concept_id No integer This field represents the specific health benefit Plan the Person is enrolled in. Map the Plan directly to a standard CONCEPT_ID. If one does not exists please contact the vocabulary team. There is no global controlled vocabulary available for this information. The point is to stratify on this information and identify if Persons have the same health benefit Plan though the name of the Plan is not necessary. [Accepted Concepts](http://athena.ohdsi.org/search-terms/terms?domain=Plan&standardConcept=Standard&page=1&pageSize=15&query=). No Yes CONCEPT CONCEPT_ID
268 PAYER_PLAN_PERIOD plan_source_value No varchar(50) This is the health benefit Plan of the Person as it appears in the source data. No No
269 PAYER_PLAN_PERIOD plan_source_concept_id No integer If the source data codes the Plan in an OMOP supported vocabulary store the concept_id here. No Yes CONCEPT CONCEPT_ID
270 PAYER_PLAN_PERIOD sponsor_concept_id No integer This field represents the sponsor of the Plan who finances the Plan. This includes self-insured, small group health plan and large group health plan. Map the sponsor directly to a standard CONCEPT_ID. If one does not exists please contact the vocabulary team. There is no global controlled vocabulary available for this information. The point is to stratify on this information and identify if Persons have the same sponsor though the name of the sponsor is not necessary. [Accepted Concepts](http://athena.ohdsi.org/search-terms/terms?domain=Sponsor&standardConcept=Standard&page=1&pageSize=15&query=). No Yes CONCEPT CONCEPT_ID
271 PAYER_PLAN_PERIOD sponsor_source_value No varchar(50) The Plan sponsor as it appears in the source data. No No
272 PAYER_PLAN_PERIOD sponsor_source_concept_id No integer If the source data codes the sponsor in an OMOP supported vocabulary store the concept_id here. No Yes CONCEPT CONCEPT_ID
273 PAYER_PLAN_PERIOD family_source_value No varchar(50) The common identifier for all people (often a family) that covered by the same policy. Often these are the common digits of the enrollment id of the policy members. No No
274 PAYER_PLAN_PERIOD stop_reason_concept_id No integer This field represents the reason the Person left the Plan, if known. Map the stop reason directly to a standard CONCEPT_ID. If one does not exists please contact the vocabulary team. There is no global controlled vocabulary available for this information. [Accepted Concepts](http://athena.ohdsi.org/search-terms/terms?domain=Plan+Stop+Reason&standardConcept=Standard&page=1&pageSize=15&query=). No Yes CONCEPT CONCEPT_ID
275 PAYER_PLAN_PERIOD stop_reason_source_value No varchar(50) The Plan stop reason as it appears in the source data. No No
276 PAYER_PLAN_PERIOD stop_reason_source_concept_id No integer If the source data codes the stop reason in an OMOP supported vocabulary store the concept_id here. No Yes CONCEPT CONCEPT_ID
277 COST cost_id Yes integer Yes No
278 COST cost_event_id Yes integer No No
279 COST cost_domain_id Yes varchar(20) No Yes DOMAIN DOMAIN_ID
280 COST cost_type_concept_id Yes integer No Yes CONCEPT CONCEPT_ID
281 COST currency_concept_id No integer No Yes CONCEPT CONCEPT_ID
282 COST total_charge No float No No
283 COST total_cost No float No No
284 COST total_paid No float No No
285 COST paid_by_payer No float No No
286 COST paid_by_patient No float No No
287 COST paid_patient_copay No float No No
288 COST paid_patient_coinsurance No float No No
289 COST paid_patient_deductible No float No No
290 COST paid_by_primary No float No No
291 COST paid_ingredient_cost No float No No
292 COST paid_dispensing_fee No float No No
293 COST payer_plan_period_id No integer No No
294 COST amount_allowed No float No No
295 COST revenue_code_concept_id No integer No Yes CONCEPT CONCEPT_ID
296 COST revenue_code_source_value No varchar(50) Revenue codes are a method to charge for a class of procedures and conditions in the U.S. hospital system. No No
297 COST drg_concept_id No integer No Yes CONCEPT CONCEPT_ID
298 COST drg_source_value No varchar(3) Diagnosis Related Groups are US codes used to classify hospital cases into one of approximately 500 groups. No No
299 DRUG_ERA drug_era_id Yes integer Yes No
300 DRUG_ERA person_id Yes integer No Yes PERSON PERSON_ID
301 DRUG_ERA drug_concept_id Yes integer The Concept Id representing the specific drug ingredient. No Yes CONCEPT CONCEPT_ID Drug Ingredient
302 DRUG_ERA drug_era_start_date Yes datetime The Drug Era Start Date is the start date of the first Drug Exposure for a given ingredient, with at least 31 days since the previous exposure. No No
303 DRUG_ERA drug_era_end_date Yes datetime The Drug Era End Date is the end date of the last Drug Exposure. The End Date of each Drug Exposure is either taken from the field drug_exposure_end_date or, as it is typically not available, inferred using the following rules: For pharmacy prescription data, the date when the drug was dispensed plus the number of days of supply are used to extrapolate the End Date for the Drug Exposure. Depending on the country-specific healthcare system, this supply information is either explicitly provided in the day_supply field or inferred from package size or similar information. For Procedure Drugs, usually the drug is administered on a single date (i.e., the administration date). A standard Persistence Window of 30 days (gap, slack) is permitted between two subsequent such extrapolated DRUG_EXPOSURE records to be considered to be merged into a single Drug Era. No No
304 DRUG_ERA drug_exposure_count No integer No No
305 DRUG_ERA gap_days No integer The Gap Days determine how many total drug-free days are observed between all Drug Exposure events that contribute to a DRUG_ERA record. It is assumed that the drugs are "not stockpiled" by the patient, i.e. that if a new drug prescription or refill is observed (a new DRUG_EXPOSURE record is written), the remaining supply from the previous events is abandoned. The difference between Persistence Window and Gap Days is that the former is the maximum drug-free time allowed between two subsequent DRUG_EXPOSURE records, while the latter is the sum of actual drug-free days for the given Drug Era under the above assumption of non-stockpiling. No No
306 DOSE_ERA dose_era_id Yes integer Yes No
307 DOSE_ERA person_id Yes integer No Yes PERSON PERSON_ID
308 DOSE_ERA drug_concept_id Yes integer The Concept Id representing the specific drug ingredient. No Yes CONCEPT CONCEPT_ID Drug Ingredient
309 DOSE_ERA unit_concept_id Yes integer The Concept Id representing the unit of the specific drug ingredient. No Yes CONCEPT CONCEPT_ID Unit
310 DOSE_ERA dose_value Yes float The numeric value of the dosage of the drug_ingredient. No No
311 DOSE_ERA dose_era_start_date Yes datetime The date the Person started on the specific dosage, with at least 31 days since any prior exposure. No No
312 DOSE_ERA dose_era_end_date Yes datetime The date the Person was no longer exposed to the dosage of the specific drug ingredient. An era is ended if there are 31 days or more between dosage records. No No
313 CONDITION_ERA condition_era_id Yes integer Yes No
314 CONDITION_ERA person_id Yes integer No No PERSON PERSON_ID
315 CONDITION_ERA condition_concept_id Yes integer The Concept Id representing the Condition. No Yes CONCEPT CONCEPT_ID Condition
316 CONDITION_ERA condition_era_start_date Yes datetime The start date for the Condition Era constructed from the individual instances of Condition Occurrences. It is the start date of the very first chronologically recorded instance of the condition with at least 31 days since any prior record of the same Condition. No No
317 CONDITION_ERA condition_era_end_date Yes datetime The end date for the Condition Era constructed from the individual instances of Condition Occurrences. It is the end date of the final continuously recorded instance of the Condition. No No
318 CONDITION_ERA condition_occurrence_count No integer The number of individual Condition Occurrences used to construct the condition era. No No
319 METADATA metadata_concept_id Yes integer No Yes CONCEPT CONCEPT_ID
320 METADATA metadata_type_concept_id Yes integer No Yes CONCEPT CONCEPT_ID
321 METADATA name Yes varchar(250) No No
322 METADATA value_as_string No varchar(250) No No
323 METADATA value_as_concept_id No integer No Yes CONCEPT CONCEPT_ID
324 METADATA metadata_date No date No No
325 METADATA metadata_datetime No datetime No No
326 CDM_SOURCE cdm_source_name Yes varchar(255) The name of the CDM instance. No No
327 CDM_SOURCE cdm_source_abbreviation Yes varchar(25) The abbreviation of the CDM instance. No No
328 CDM_SOURCE cdm_holder Yes varchar(255) The holder of the CDM instance. No No
329 CDM_SOURCE source_description No varchar(MAX) The description of the CDM instance. No No
330 CDM_SOURCE source_documentation_reference No varchar(255) No No
331 CDM_SOURCE cdm_etl_reference No varchar(255) Put the link to the CDM version used. No No
332 CDM_SOURCE source_release_date Yes date The release date of the source data. No No
333 CDM_SOURCE cdm_release_date Yes date The release data of the CDM instance. No No
334 CDM_SOURCE cdm_version No varchar(10) No No
335 CDM_SOURCE cdm_version_concept_id Yes integer The Concept Id representing the version of the CDM.
336 CDM_SOURCE vocabulary_version Yes varchar(20) No No
337 CONCEPT concept_id Yes integer A unique identifier for each Concept across all domains. Yes No
338 CONCEPT concept_name Yes varchar(255) An unambiguous, meaningful and descriptive name for the Concept. No No
339 CONCEPT domain_id Yes varchar(20) A foreign key to the [DOMAIN](https://ohdsi.github.io/CommonDataModel/cdm531.html#domain) table the Concept belongs to. No Yes DOMAIN DOMAIN_ID
340 CONCEPT vocabulary_id Yes varchar(20) A foreign key to the [VOCABULARY](https://ohdsi.github.io/CommonDataModel/cdm531.html#vocabulary) table indicating from which source the Concept has been adapted. No Yes VOCABULARY VOCABULARY_ID
341 CONCEPT concept_class_id Yes varchar(20) The attribute or concept class of the Concept. Examples are 'Clinical Drug', 'Ingredient', 'Clinical Finding' etc. No Yes CONCEPT_CLASS CONCEPT_CLASS_ID
342 CONCEPT standard_concept No varchar(1) This flag determines where a Concept is a Standard Concept, i.e. is used in the data, a Classification Concept, or a non-standard Source Concept. The allowable values are 'S' (Standard Concept) and 'C' (Classification Concept), otherwise the content is NULL. No No
343 CONCEPT concept_code Yes varchar(50) The concept code represents the identifier of the Concept in the source vocabulary, such as SNOMED-CT concept IDs, RxNorm RXCUIs etc. Note that concept codes are not unique across vocabularies. No No
344 CONCEPT valid_start_date Yes date The date when the Concept was first recorded. The default value is 1-Jan-1970, meaning, the Concept has no (known) date of inception. No No
345 CONCEPT valid_end_date Yes date The date when the Concept became invalid because it was deleted or superseded (updated) by a new concept. The default value is 31-Dec-2099, meaning, the Concept is valid until it becomes deprecated. No No
346 CONCEPT invalid_reason No varchar(1) Reason the Concept was invalidated. Possible values are D (deleted), U (replaced with an update) or NULL when valid_end_date has the default value. No No
347 VOCABULARY vocabulary_id Yes varchar(20) A unique identifier for each Vocabulary, such as ICD9CM, SNOMED, Visit. Yes No
348 VOCABULARY vocabulary_name Yes varchar(255) The name describing the vocabulary, for example, International Classification of Diseases, Ninth Revision, Clinical Modification, Volume 1 and 2 (NCHS) etc. No No
349 VOCABULARY vocabulary_reference Yes varchar(255) External reference to documentation or available download of the about the vocabulary. No No
350 VOCABULARY vocabulary_version No varchar(255) Version of the Vocabulary as indicated in the source. No No
351 VOCABULARY vocabulary_concept_id Yes integer A Concept that represents the Vocabulary the VOCABULARY record belongs to. No Yes CONCEPT CONCEPT_ID
352 DOMAIN domain_id Yes varchar(20) A unique key for each domain. Yes No
353 DOMAIN domain_name Yes varchar(255) The name describing the Domain, e.g. Condition, Procedure, Measurement etc. No No
354 DOMAIN domain_concept_id Yes integer A Concept representing the Domain Concept the DOMAIN record belongs to. No Yes CONCEPT CONCEPT_ID
355 CONCEPT_CLASS concept_class_id Yes varchar(20) A unique key for each class. Yes No
356 CONCEPT_CLASS concept_class_name Yes varchar(255) The name describing the Concept Class, e.g. Clinical Finding, Ingredient, etc. No No
357 CONCEPT_CLASS concept_class_concept_id Yes integer A Concept that represents the Concept Class. No Yes CONCEPT CONCEPT_ID
358 CONCEPT_RELATIONSHIP concept_id_1 Yes integer No Yes CONCEPT CONCEPT_ID
359 CONCEPT_RELATIONSHIP concept_id_2 Yes integer No Yes CONCEPT CONCEPT_ID
360 CONCEPT_RELATIONSHIP relationship_id Yes varchar(20) The relationship between CONCEPT_ID_1 and CONCEPT_ID_2. Please see the [Vocabulary Conventions](https://ohdsi.github.io/CommonDataModel/dataModelConventions.html#concept_relationships). for more information. No Yes RELATIONSHIP RELATIONSHIP_ID
361 CONCEPT_RELATIONSHIP valid_start_date Yes date The date when the relationship is first recorded. No No
362 CONCEPT_RELATIONSHIP valid_end_date Yes date The date when the relationship is invalidated. No No
363 CONCEPT_RELATIONSHIP invalid_reason No varchar(1) Reason the relationship was invalidated. Possible values are 'D' (deleted), 'U' (updated) or NULL. No No
364 RELATIONSHIP relationship_id Yes varchar(20) The type of relationship captured by the relationship record. Yes No
365 RELATIONSHIP relationship_name Yes varchar(255) No No
366 RELATIONSHIP is_hierarchical Yes varchar(1) Defines whether a relationship defines concepts into classes or hierarchies. Values are 1 for hierarchical relationship or 0 if not. No No
367 RELATIONSHIP defines_ancestry Yes varchar(1) Defines whether a hierarchical relationship contributes to the concept_ancestor table. These are subsets of the hierarchical relationships. Valid values are 1 or 0. No No
368 RELATIONSHIP reverse_relationship_id Yes varchar(20) The identifier for the relationship used to define the reverse relationship between two concepts. No No
369 RELATIONSHIP relationship_concept_id Yes integer A foreign key that refers to an identifier in the [CONCEPT](https://ohdsi.github.io/CommonDataModel/cdm531.html#concept) table for the unique relationship concept. No Yes CONCEPT CONCEPT_ID
370 CONCEPT_SYNONYM concept_id Yes integer No Yes CONCEPT CONCEPT_ID
371 CONCEPT_SYNONYM concept_synonym_name Yes varchar(1000) No No
372 CONCEPT_SYNONYM language_concept_id Yes integer No Yes CONCEPT CONCEPT_ID
373 CONCEPT_ANCESTOR ancestor_concept_id Yes integer The Concept Id for the higher-level concept that forms the ancestor in the relationship. No Yes CONCEPT CONCEPT_ID
374 CONCEPT_ANCESTOR descendant_concept_id Yes integer The Concept Id for the lower-level concept that forms the descendant in the relationship. No Yes CONCEPT CONCEPT_ID
375 CONCEPT_ANCESTOR min_levels_of_separation Yes integer The minimum separation in number of levels of hierarchy between ancestor and descendant concepts. This is an attribute that is used to simplify hierarchic analysis. No No
376 CONCEPT_ANCESTOR max_levels_of_separation Yes integer The maximum separation in number of levels of hierarchy between ancestor and descendant concepts. This is an attribute that is used to simplify hierarchic analysis. No No
377 SOURCE_TO_CONCEPT_MAP source_code Yes varchar(50) The source code being translated into a Standard Concept. No No
378 SOURCE_TO_CONCEPT_MAP source_concept_id Yes integer A foreign key to the Source Concept that is being translated into a Standard Concept. This is either 0 or should be a number above 2 billion, which are the Concepts reserved for site-specific codes and mappings. No Yes CONCEPT CONCEPT_ID
379 SOURCE_TO_CONCEPT_MAP source_vocabulary_id Yes varchar(20) A foreign key to the VOCABULARY table defining the vocabulary of the source code that is being translated to a Standard Concept. No No
380 SOURCE_TO_CONCEPT_MAP source_code_description No varchar(255) An optional description for the source code. This is included as a convenience to compare the description of the source code to the name of the concept. No No
381 SOURCE_TO_CONCEPT_MAP target_concept_id Yes integer The target Concept to which the source code is being mapped. No Yes CONCEPT CONCEPT_ID
382 SOURCE_TO_CONCEPT_MAP target_vocabulary_id Yes varchar(20) The Vocabulary of the target Concept. No Yes VOCABULARY VOCABULARY_ID
383 SOURCE_TO_CONCEPT_MAP valid_start_date Yes date The date when the mapping instance was first recorded. No No
384 SOURCE_TO_CONCEPT_MAP valid_end_date Yes date The date when the mapping instance became invalid because it was deleted or superseded (updated) by a new relationship. Default value is 31-Dec-2099. No No
385 SOURCE_TO_CONCEPT_MAP invalid_reason No varchar(1) Reason the mapping instance was invalidated. Possible values are D (deleted), U (replaced with an update) or NULL when valid_end_date has the default value. No No
386 DRUG_STRENGTH drug_concept_id Yes integer The Concept representing the Branded Drug or Clinical Drug Product. No Yes CONCEPT CONCEPT_ID
387 DRUG_STRENGTH ingredient_concept_id Yes integer The Concept representing the active ingredient contained within the drug product. Combination Drugs will have more than one record in this table, one for each active Ingredient. No Yes CONCEPT CONCEPT_ID
388 DRUG_STRENGTH amount_value No float The numeric value or the amount of active ingredient contained within the drug product. No No
389 DRUG_STRENGTH amount_unit_concept_id No integer The Concept representing the Unit of measure for the amount of active ingredient contained within the drug product. No Yes CONCEPT CONCEPT_ID
390 DRUG_STRENGTH numerator_value No float The concentration of the active ingredient contained within the drug product. No No
391 DRUG_STRENGTH numerator_unit_concept_id No integer The Concept representing the Unit of measure for the concentration of active ingredient. No Yes CONCEPT CONCEPT_ID
392 DRUG_STRENGTH denominator_value No float The amount of total liquid (or other divisible product, such as ointment, gel, spray, etc.). No No
393 DRUG_STRENGTH denominator_unit_concept_id No integer The Concept representing the denominator unit for the concentration of active ingredient. No Yes CONCEPT CONCEPT_ID
394 DRUG_STRENGTH box_size No integer The number of units of Clinical Branded Drug or Quantified Clinical or Branded Drug contained in a box as dispensed to the patient. No No
395 DRUG_STRENGTH valid_start_date Yes date The date when the Concept was first recorded. The default value is 1-Jan-1970. No No
396 DRUG_STRENGTH valid_end_date Yes date The date when then Concept became invalid. No No
397 DRUG_STRENGTH invalid_reason No varchar(1) Reason the concept was invalidated. Possible values are D (deleted), U (replaced with an update) or NULL when valid_end_date has the default value. No No
398 COHORT_DEFINITION cohort_definition_id Yes integer This is the identifier given to the cohort, usually by the ATLAS application No No
399 COHORT_DEFINITION cohort_definition_name Yes varchar(255) A short description of the cohort No No
400 COHORT_DEFINITION cohort_definition_description No varchar(MAX) A complete description of the cohort. No No
401 COHORT_DEFINITION definition_type_concept_id Yes integer Type defining what kind of Cohort Definition the record represents and how the syntax may be executed. No Yes CONCEPT CONCEPT_ID
402 COHORT_DEFINITION cohort_definition_syntax No varchar(MAX) Syntax or code to operationalize the Cohort Definition. No No
403 COHORT_DEFINITION subject_concept_id Yes integer This field contains a Concept that represents the domain of the subjects that are members of the cohort (e.g., Person, Provider, Visit). No Yes CONCEPT CONCEPT_ID
404 COHORT_DEFINITION cohort_initiation_date No date A date to indicate when the Cohort was initiated in the COHORT table. No No
405 ATTRIBUTE_DEFINITION attribute_definition_id Yes integer No No
406 ATTRIBUTE_DEFINITION attribute_name Yes varchar(255) No No
407 ATTRIBUTE_DEFINITION attribute_description No varchar(MAX) No No
408 ATTRIBUTE_DEFINITION attribute_type_concept_id Yes integer No Yes CONCEPT CONCEPT_ID
409 ATTRIBUTE_DEFINITION attribute_syntax No varchar(MAX) No No
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cdmTableName,schema,isRequired,conceptPrefix,measurePersonCompleteness,measurePersonCompletenessThreshold,validation,tableDescription,userGuidance,etlConventions
PERSON,CDM,Yes,,No,,,"This table serves as the central identity management for all Persons in the database. It contains records that uniquely identify each person or patient, and some demographic information. ",All records in this table are independent Persons.,"All Persons in a database needs one record in this table, unless they fail data quality requirements specified in the ETL. Persons with no Events should have a record nonetheless. If more than one data source contributes Events to the database, Persons must be reconciled, if possible, across the sources to create one single record per Person. The content of the BIRTH_DATETIME must be equivalent to the content of BIRTH_DAY, BIRTH_MONTH and BIRTH_YEAR. "
OBSERVATION_PERIOD,CDM,Yes,,Yes,0,,"This table contains records which define spans of time during which two conditions are expected to hold: (i) Clinical Events that happened to the Person are recorded in the Event tables, and (ii) absense of records indicate such Events did not occur during this span of time.","For each Person, one or more OBSERVATION_PERIOD records may be present, but they will not overlap or be back to back to each other. Events may exist outside all of the time spans of the OBSERVATION_PERIOD records for a patient, however, absence of an Event outside these time spans cannot be construed as evidence of absence of an Event. Incidence or prevalence rates should only be calculated for the time of active OBSERVATION_PERIOD records. When constructing cohorts, outside Events can be used for inclusion criteria definition, but without any guarantee for the performance of these criteria. Also, OBSERVATION_PERIOD records can be as short as a single day, greatly disturbing the denominator of any rate calculation as part of cohort characterizations. To avoid that, apply minimal observation time as a requirement for any cohort definition.","Each Person needs to have at least one OBSERVATION_PERIOD record, which should represent time intervals with a high capture rate of Clinical Events. Some source data have very similar concepts, such as enrollment periods in insurance claims data. In other source data such as most EHR systems these time spans need to be inferred under a set of assumptions. It is the discretion of the ETL developer to define these assumptions. In many ETL solutions the start date of the first occurrence or the first high quality occurrence of a Clinical Event (Condition, Drug, Procedure, Device, Measurement, Visit) is defined as the start of the OBSERVATION_PERIOD record, and the end date of the last occurrence of last high quality occurrence of a Clinical Event, or the end of the database period becomes the end of the OBSERVATOIN_PERIOD for each Person. If a Person only has a single Clinical Event the OBSERVATION_PERIOD record can be as short as one day. Depending on these definitions it is possible that Clinical Events fall outside the time spans defined by OBSERVATION_PERIOD records. Family history or history of Clinical Events generally are not used to generate OBSERVATION_PERIOD records around the time they are referring to. Any two overlapping or adjacent OBSERVATION_PERIOD records have to be merged into one."
VISIT_OCCURRENCE,CDM,No,VISIT_,Yes,0,,"This table contains Events where Persons engage with the healthcare system for a duration of time. They are often also called ""Encounters"". Visits are defined by a configuration of circumstances under which they occur, such as (i) whether the patient comes to a healthcare institution, the other way around, or the interaction is remote, (ii) whether and what kind of trained medical staff is delivering the service during the Visit, and (iii) whether the Visit is transient or for a longer period involving a stay in bed. ","The configuration defining the Visit are described by Concepts in the Visit Domain, which form a hierarchical structure, but rolling up to generally familiar Visits adopted in most healthcare systems worldwide:
- [Inpatient Visit](https://athena.ohdsi.org/search-terms/terms/9201): Person visiting hospital, at a Care Site, in bed, for duration of more than one day, with physicians and other Providers permanently available to deliver service around the clock
- [Emergency Room Visit](https://athena.ohdsi.org/search-terms/terms/9203): Person visiting dedicated healthcare institution for treating emergencies, at a Care Site, within one day, with physicians and Providers permanently available to deliver service around the clock
- [Emergency Room and Inpatient Visit](https://athena.ohdsi.org/search-terms/terms/262): Person visiting ER followed by a subsequent Inpatient Visit, where Emergency department is part of hospital, and transition from the ER to other hospital departments is undefined
- [Non-hospital institution Visit](https://athena.ohdsi.org/search-terms/terms/42898160): Person visiting dedicated institution for reasons of poor health, at a Care Site, long-term or permanently, with no physician but possibly other Providers permanently available to deliver service around the clock
- [Outpatient Visit](https://athena.ohdsi.org/search-terms/terms/9202): Person visiting dedicated ambulatory healthcare institution, at a Care Site, within one day, without bed, with physicians or medical Providers delivering service during Visit
- [Home Visit](https://athena.ohdsi.org/search-terms/terms/581476): Provider visiting Person, without a Care Site, within one day, delivering service
- [Telehealth Visit](https://athena.ohdsi.org/search-terms/terms/5083): Patient engages with Provider through communication media
- [Pharmacy Visit](https://athena.ohdsi.org/search-terms/terms/581458): Person visiting pharmacy for dispensing of Drug, at a Care Site, within one day
- [Laboratory Visit](https://athena.ohdsi.org/search-terms/terms/32036): Patient visiting dedicated institution, at a Care Site, within one day, for the purpose of a Measurement.
- [Ambulance Visit](https://athena.ohdsi.org/search-terms/terms/581478): Person using transportation service for the purpose of initiating one of the other Visits, without a Care Site, within one day, potentially with Providers accompanying the Visit and delivering service
- [Case Management Visit](https://athena.ohdsi.org/search-terms/terms/38004193): Person interacting with healthcare system, without a Care Site, within a day, with no Providers involved, for administrative purposes
The Visit duration, or 'length of stay', is defined as VISIT_END_DATE - VISIT_START_DATE. For all Visits this is <1 day, except Inpatient Visits and Non-hospital institution Visits. The CDM also contains the VISIT_DETAIL table where additional information about the Visit is stored, for example, transfers between units during an inpatient Visit.","Visits can be derived easily if the source data contain coding systems for Place of Service or Procedures, like CPT codes for well visits. In those cases, the codes can be looked up and mapped to a Standard Visit Concept. Otherwise, Visit Concepts have to be identified in the ETL process. This table will contain concepts in the Visit domain. These concepts are arranged in a hierarchical structure to facilitate cohort definitions by rolling up to generally familiar Visits adopted in most healthcare systems worldwide. Visits can be adjacent to each other, i.e. the end date of one can be identical with the start date of the other. As a consequence, more than one-day Visits or their descendants can be recorded for the same day. Multi-day visits must not overlap, i.e. share days other than start and end days. It is often the case that some logic should be written for how to define visits and how to assign Visit_Concept_Id. For example, in US claims outpatient visits that appear to occur within the time period of an inpatient visit can be rolled into one with the same Visit_Occurrence_Id. In EHR data inpatient visits that are within one day of each other may be strung together to create one visit. It will all depend on the source data and how encounter records should be translated to visit occurrences. Providers can be associated with a Visit through the PROVIDER_ID field, or indirectly through PROCEDURE_OCCURRENCE records linked both to the VISIT and PROVIDER tables."
VISIT_DETAIL,CDM,No,VISIT_DETAIL_,Yes,0,,The VISIT_DETAIL table is an optional table used to represents details of each record in the parent VISIT_OCCURRENCE table. A good example of this would be the movement between units in a hospital during an inpatient stay or claim lines associated with a one insurance claim. For every record in the VISIT_OCCURRENCE table there may be 0 or more records in the VISIT_DETAIL table with a 1:n relationship where n may be 0. The VISIT_DETAIL table is structurally very similar to VISIT_OCCURRENCE table and belongs to the visit domain.,"The configuration defining the Visit Detail is described by Concepts in the Visit Domain, which form a hierarchical structure. The Visit Detail record will have an associated to the Visit Occurrence record in two ways: <br> 1. The Visit Detail record will have the VISIT_OCCURRENCE_ID it is associated to 2. The VISIT_DETAIL_CONCEPT_ID will be a descendant of the VISIT_CONCEPT_ID for the Visit.","It is not mandatory that the VISIT_DETAIL table be filled in, but if you find that the logic to create VISIT_OCCURRENCE records includes the roll-up of multiple smaller records to create one picture of a Visit then it is a good idea to use VISIT_DETAIL. In EHR data, for example, a Person may be in the hospital but instead of one over-arching Visit their encounters are recorded as times they interacted with a health care provider. A Person in the hospital interacts with multiple providers multiple times a day so the encounters must be strung together using some heuristic (defined by the ETL) to identify the entire Visit. In this case the encounters would be considered Visit Details and the entire Visit would be the Visit Occurrence. In this example it is also possible to use the Vocabulary to distinguish Visit Details from a Visit Occurrence by setting the VISIT_CONCEPT_ID to [9201](https://athena.ohdsi.org/search-terms/terms/9201) and the VISIT_DETAIL_CONCEPT_IDs either to 9201 or its children to indicate where the patient was in the hospital at the time of care."
CONDITION_OCCURRENCE,CDM,No,CONDITION_,Yes,0,,"This table contains records of Events of a Person suggesting the presence of a disease or medical condition stated as a diagnosis, a sign, or a symptom, which is either observed by a Provider or reported by the patient. ","Conditions are defined by Concepts from the Condition domain, which form a complex hierarchy. As a result, the same Person with the same disease may have multiple Condition records, which belong to the same hierarchical family. Most Condition records are mapped from diagnostic codes, but recorded signs, symptoms and summary descriptions also contribute to this table. Rule out diagnoses should not be recorded in this table, but in reality their negating nature is not always captured in the source data, and other precautions must be taken when when identifying Persons who should suffer from the recorded Condition. Record all conditions as they exist in the source data. Any decisions about diagnosis/phenotype definitions would be done through cohort specifications. These cohorts can be housed in the [COHORT](https://ohdsi.github.io/CommonDataModel/cdm531.html#payer_plan_period) table. Conditions span a time interval from start to end, but are typically recorded as single snapshot records with no end date. The reason is twofold: (i) At the time of the recording the duration is not known and later not recorded, and (ii) the Persons typically cease interacting with the healthcare system when they feel better, which leads to incomplete capture of resolved Conditions. The [CONDITION_ERA](https://ohdsi.github.io/CommonDataModel/cdm531.html#condition_era) table addresses this issue. Family history and past diagnoses ('history of') are not recorded in this table. Instead, they are listed in the [OBSERVATION](https://ohdsi.github.io/CommonDataModel/cdm531.html#observation) table. Codes written in the process of establishing the diagnosis, such as 'question of' of and 'rule out', should not represented here. Instead, they should be recorded in the [OBSERVATION](https://ohdsi.github.io/CommonDataModel/cdm531.html#observation) table, if they are used for analyses. However, this information is not always available.",Source codes and source text fields mapped to Standard Concepts of the Condition Domain have to be recorded here.
DRUG_EXPOSURE,CDM,No,DRUG_,Yes,0,,"This table captures records about the exposure to a Drug ingested or otherwise introduced into the body. A Drug is a biochemical substance formulated in such a way that when administered to a Person it will exert a certain biochemical effect on the metabolism. Drugs include prescription and over-the-counter medicines, vaccines, and large-molecule biologic therapies. Radiological devices ingested or applied locally do not count as Drugs.","The purpose of records in this table is to indicate an exposure to a certain drug as best as possible. In this context a drug is defined as an active ingredient. Drug Exposures are defined by Concepts from the Drug domain, which form a complex hierarchy. As a result, one DRUG_SOURCE_CONCEPT_ID may map to multiple standard concept ids if it is a combination product. Records in this table represent prescriptions written, prescriptions dispensed, and drugs administered by a provider to name a few. The DRUG_TYPE_CONCEPT_ID can be used to find and filter on these types. This table includes additional information about the drug products, the quantity given, and route of administration.",Information about quantity and dose is provided in a variety of different ways and it is important for the ETL to provide as much information as possible from the data. Depending on the provenance of the data fields may be captured differently i.e. quantity for drugs administered may have a separate meaning from quantity for prescriptions dispensed. If a patient has multiple records on the same day for the same drug or procedures the ETL should not de-dupe them unless there is probable reason to believe the item is a true data duplicate. Take note on how to handle refills for prescriptions written.
PROCEDURE_OCCURRENCE,CDM,No,PROCEDURE_,Yes,0,,"This table contains records of activities or processes ordered by, or carried out by, a healthcare provider on the patient with a diagnostic or therapeutic purpose.","Lab tests are not a procedure, if something is observed with an expected resulting amount and unit then it should be a measurement. Phlebotomy is a procedure but so trivial that it tends to be rarely captured. It can be assumed that there is a phlebotomy procedure associated with many lab tests, therefore it is unnecessary to add them as separate procedures. If the user finds the same procedure over concurrent days, it is assumed those records are part of a procedure lasting more than a day. This logic is in lieu of the procedure_end_date, which will be added in a future version of the CDM.","If a procedure lasts more than a day, then it should be recorded as a separate record for each day the procedure occurred, this logic is in lieu of the PROCEDURE_END_DATE, which will be added in a future version of the CDM. When dealing with duplicate records, the ETL must determine whether to sum them up into one record or keep them separate. Things to consider are: - Same Procedure - Same PROCEDURE_DATETIME - Same Visit Occurrence or Visit Detail - Same Provider - Same Modifier for Procedures. Source codes and source text fields mapped to Standard Concepts of the Procedure Domain have to be recorded here."
DEVICE_EXPOSURE,CDM,No,DEVICE_,Yes,0,,"The Device domain captures information about a person's exposure to a foreign physical object or instrument which is used for diagnostic or therapeutic purposes through a mechanism beyond chemical action. Devices include implantable objects (e.g. pacemakers, stents, artificial joints), medical equipment and supplies (e.g. bandages, crutches, syringes), other instruments used in medical procedures (e.g. sutures, defibrillators) and material used in clinical care (e.g. adhesives, body material, dental material, surgical material).","The distinction between Devices or supplies and Procedures are sometimes blurry, but the former are physical objects while the latter are actions, often to apply a Device or supply.",Source codes and source text fields mapped to Standard Concepts of the Device Domain have to be recorded here.
MEASUREMENT,CDM,No,MEASUREMENT_,Yes,0,,"The MEASUREMENT table contains records of Measurements, i.e. structured values (numerical or categorical) obtained through systematic and standardized examination or testing of a Person or Person's sample. The MEASUREMENT table contains both orders and results of such Measurements as laboratory tests, vital signs, quantitative findings from pathology reports, etc. Measurements are stored as attribute value pairs, with the attribute as the Measurement Concept and the value representing the result. The value can be a Concept (stored in VALUE_AS_CONCEPT), or a numerical value (VALUE_AS_NUMBER) with a Unit (UNIT_CONCEPT_ID). The Procedure for obtaining the sample is housed in the PROCEDURE_OCCURRENCE table, though it is unnecessary to create a PROCEDURE_OCCURRENCE record for each measurement if one does not exist in the source data. Measurements differ from Observations in that they require a standardized test or some other activity to generate a quantitative or qualitative result. If there is no result, it is assumed that the lab test was conducted but the result was not captured.","Measurements are predominately lab tests with a few exceptions, like blood pressure or function tests. Results are given in the form of a value and unit combination. When investigating measurements, look for operator_concept_ids (<, >, etc.).","Only records where the source value maps to a Concept in the measurement domain should be included in this table. Even though each Measurement always has a result, the fields VALUE_AS_NUMBER and VALUE_AS_CONCEPT_ID are not mandatory as often the result is not given in the source data. When the result is not known, the Measurement record represents just the fact that the corresponding Measurement was carried out, which in itself is already useful information for some use cases. For some Measurement Concepts, the result is included in the test. For example, ICD10 CONCEPT_ID [45548980](https://athena.ohdsi.org/search-terms/terms/45548980) 'Abnormal level of unspecified serum enzyme' indicates a Measurement and the result (abnormal). In those situations, the CONCEPT_RELATIONSHIP table in addition to the 'Maps to' record contains a second record with the relationship_id set to 'Maps to value'. In this example, the 'Maps to' relationship directs to [4046263](https://athena.ohdsi.org/search-terms/terms/4046263) 'Enzyme measurement' as well as a 'Maps to value' record to [4135493](https://athena.ohdsi.org/search-terms/terms/4135493) 'Abnormal'."
OBSERVATION,CDM,No,OBSERVATION_,Yes,0,,"The OBSERVATION table captures clinical facts about a Person obtained in the context of examination, questioning or a procedure. Any data that cannot be represented by any other domains, such as social and lifestyle facts, medical history, family history, etc. are recorded here.","Observations differ from Measurements in that they do not require a standardized test or some other activity to generate clinical fact. Typical observations are medical history, family history, the stated need for certain treatment, social circumstances, lifestyle choices, healthcare utilization patterns, etc. If the generation clinical facts requires a standardized testing such as lab testing or imaging and leads to a standardized result, the data item is recorded in the MEASUREMENT table. If the clinical fact observed determines a sign, symptom, diagnosis of a disease or other medical condition, it is recorded in the CONDITION_OCCURRENCE table. Valid Observation Concepts are not enforced to be from any domain though they still should be Standard Concepts.","Records whose Source Values map to any domain besides Condition, Procedure, Drug, Measurement or Device should be stored in the Observation table. Observations can be stored as attribute value pairs, with the attribute as the Observation Concept and the value representing the clinical fact. This fact can be a Concept (stored in VALUE_AS_CONCEPT), a numerical value (VALUE_AS_NUMBER), a verbatim string (VALUE_AS_STRING), or a datetime (VALUE_AS_DATETIME). Even though Observations do not have an explicit result, the clinical fact can be stated separately from the type of Observation in the VALUE_AS_* fields. It is recommended for Observations that are suggestive statements of positive assertion should have a value of 'Yes' (concept_id=4188539), recorded, even though the null value is the equivalent. "
DEATH,CDM,No,,No,,,"The death domain contains the clinical event for how and when a Person dies. A person can have up to one record if the source system contains evidence about the Death, such as: Condition in an administrative claim, status of enrollment into a health plan, or explicit record in EHR data.",,
NOTE,CDM,No,,Yes,0,,"The NOTE table captures unstructured information that was recorded by a provider about a patient in free text (in ASCII, or preferably in UTF8 format) notes on a given date. The type of note_text is CLOB or varchar(MAX) depending on RDBMS. ",,"HL7/LOINC CDO is a standard for consistent naming of documents to support a range of use cases: retrieval, organization, display, and exchange. It guides the creation of LOINC codes for clinical notes. CDO annotates each document with 5 dimensions:
- **Kind of Document**: Characterizes the general structure of the document at a macro level (e.g. Anesthesia Consent)
- **Type of Service**: Characterizes the kind of service or activity (e.g. evaluations, consultations, and summaries). The notion of time sequence, e.g., at the beginning (admission) at the end (discharge) is subsumed in this axis. Example: Discharge Teaching.
- **Setting**: Setting is an extension of CMS's definitions (e.g. Inpatient, Outpatient)
- **Subject Matter Domain (SMD)**: Characterizes the subject matter domain of a note (e.g. Anesthesiology)
- **Role**: Characterizes the training or professional level of the author of the document, but does not break down to specialty or subspecialty (e.g. Physician)
Each combination of these 5 dimensions rolls up to a unique LOINC code.
According to CDO requirements, only 2 of the 5 dimensions are required to properly annotate a document; Kind of Document and any one of the other 4 dimensions.
However, not all the permutations of the CDO dimensions will necessarily yield an existing LOINC code. Each of these dimensions are contained in the OMOP Vocabulary under the domain of 'Meas Value' with each dimension represented as a Concept Class. "
NOTE_NLP,CDM,No,,No,,,The NOTE_NLP table encodes all output of NLP on clinical notes. Each row represents a single extracted term from a note.,,
SPECIMEN,CDM,No,SPECIMEN_,Yes,0,,The specimen domain contains the records identifying biological samples from a person.,,"Anatomic site is coded at the most specific level of granularity possible, such that higher level classifications can be derived using the Standardized Vocabularies."
FACT_RELATIONSHIP,CDM,No,,No,,,"The FACT_RELATIONSHIP table contains records about the relationships between facts stored as records in any table of the CDM. Relationships can be defined between facts from the same domain, or different domains. Examples of Fact Relationships include: [Person relationships](https://athena.ohdsi.org/search-terms/terms?domain=Relationship&standardConcept=Standard&page=2&pageSize=15&query=) (parent-child), care site relationships (hierarchical organizational structure of facilities within a health system), indication relationship (between drug exposures and associated conditions), usage relationships (of devices during the course of an associated procedure), or facts derived from one another (measurements derived from an associated specimen).",,"All relationships are directional, and each relationship is represented twice symmetrically within the FACT_RELATIONSHIP table. For example, two persons if person_id = 1 is the mother of person_id = 2 two records are in the FACT_RELATIONSHIP table (all strings in fact concept_id records in the Concept table:
- Person, 1, Person, 2, parent of
- Person, 2, Person, 1, child of"
LOCATION,CDM,No,,No,,,The LOCATION table represents a generic way to capture physical location or address information of Persons and Care Sites.,,"Each address or Location is unique and is present only once in the table. Locations do not contain names, such as the name of a hospital. In order to construct a full address that can be used in the postal service, the address information from the Location needs to be combined with information from the Care Site."
CARE_SITE,CDM,No,,No,,,"The CARE_SITE table contains a list of uniquely identified institutional (physical or organizational) units where healthcare delivery is practiced (offices, wards, hospitals, clinics, etc.).",,"Care site is a unique combination of location_id and place_of_service_source_value. Care site does not take into account the provider (human) information such a specialty. Many source data do not make a distinction between individual and institutional providers. The CARE_SITE table contains the institutional providers. If the source, instead of uniquely identifying individual Care Sites, only provides limited information such as Place of Service, generic or ""pooled"" Care Site records are listed in the CARE_SITE table. There can be hierarchical and business relationships between Care Sites. For example, wards can belong to clinics or departments, which can in turn belong to hospitals, which in turn can belong to hospital systems, which in turn can belong to HMOs.The relationships between Care Sites are defined in the FACT_RELATIONSHIP table."
PROVIDER,CDM,No,,No,,,"The PROVIDER table contains a list of uniquely identified healthcare providers. These are individuals providing hands-on healthcare to patients, such as physicians, nurses, midwives, physical therapists etc.","Many sources do not make a distinction between individual and institutional providers. The PROVIDER table contains the individual providers. If the source, instead of uniquely identifying individual providers, only provides limited information such as specialty, generic or 'pooled' Provider records are listed in the PROVIDER table.",
PAYER_PLAN_PERIOD,CDM,No,,Yes,0,,"The PAYER_PLAN_PERIOD table captures details of the period of time that a Person is continuously enrolled under a specific health Plan benefit structure from a given Payer. Each Person receiving healthcare is typically covered by a health benefit plan, which pays for (fully or partially), or directly provides, the care. These benefit plans are provided by payers, such as health insurances or state or government agencies. In each plan the details of the health benefits are defined for the Person or her family, and the health benefit Plan might change over time typically with increasing utilization (reaching certain cost thresholds such as deductibles), plan availability and purchasing choices of the Person. The unique combinations of Payer organizations, health benefit Plans and time periods in which they are valid for a Person are recorded in this table.","A Person can have multiple, overlapping, Payer_Plan_Periods in this table. For example, medical and drug coverage in the US can be represented by two Payer_Plan_Periods. The details of the benefit structure of the Plan is rarely known, the idea is just to identify that the Plans are different.",
COST,CDM,No,,No,,,"The COST table captures records containing the cost of any medical event recorded in one of the OMOP clinical event tables such as DRUG_EXPOSURE, PROCEDURE_OCCURRENCE, VISIT_OCCURRENCE, VISIT_DETAIL, DEVICE_OCCURRENCE, OBSERVATION or MEASUREMENT.
Each record in the cost table account for the amount of money transacted for the clinical event. So, the COST table may be used to represent both receivables (charges) and payments (paid), each transaction type represented by its COST_CONCEPT_ID. The COST_TYPE_CONCEPT_ID field will use concepts in the Standardized Vocabularies to designate the source (provenance) of the cost data. A reference to the health plan information in the PAYER_PLAN_PERIOD table is stored in the record for information used for the adjudication system to determine the persons benefit for the clinical event.","When dealing with summary costs, the cost of the goods or services the provider provides is often not known directly, but derived from the hospital charges multiplied by an average cost-to-charge ratio.","One cost record is generated for each response by a payer. In a claims databases, the payment and payment terms reported by the payer for the goods or services billed will generate one cost record. If the source data has payment information for more than one payer (i.e. primary insurance and secondary insurance payment for one entity), then a cost record is created for each reporting payer. Therefore, it is possible for one procedure to have multiple cost records for each payer, but typically it contains one or no record per entity. Payer reimbursement cost records will be identified by using the PAYER_PLAN_ID field. Drug costs are composed of ingredient cost (the amount charged by the wholesale distributor or manufacturer), the dispensing fee (the amount charged by the pharmacy and the sales tax)."
DRUG_ERA,CDM,No,,Yes,0,,"A Drug Era is defined as a span of time when the Person is assumed to be exposed to a particular active ingredient. A Drug Era is not the same as a Drug Exposure: Exposures are individual records corresponding to the source when Drug was delivered to the Person, while successive periods of Drug Exposures are combined under certain rules to produce continuous Drug Eras.",,The SQL script for generating DRUG_ERA records can be found [here](https://ohdsi.github.io/CommonDataModel/sqlScripts.html#drug_eras).
DOSE_ERA,CDM,No,,Yes,0,,A Dose Era is defined as a span of time when the Person is assumed to be exposed to a constant dose of a specific active ingredient.,,"Dose Eras will be derived from records in the DRUG_EXPOSURE table and the Dose information from the DRUG_STRENGTH table using a standardized algorithm. Dose Form information is not taken into account. So, if the patient changes between different formulations, or different manufacturers with the same formulation, the Dose Era is still spanning the entire time of exposure to the Ingredient. "
CONDITION_ERA,CDM,No,,Yes,0,,"A Condition Era is defined as a span of time when the Person is assumed to have a given condition. Similar to Drug Eras, Condition Eras are chronological periods of Condition Occurrence. Combining individual Condition Occurrences into a single Condition Era serves two purposes:
- It allows aggregation of chronic conditions that require frequent ongoing care, instead of treating each Condition Occurrence as an independent event.
- It allows aggregation of multiple, closely timed doctor visits for the same Condition to avoid double-counting the Condition Occurrences.
For example, consider a Person who visits her Primary Care Physician (PCP) and who is referred to a specialist. At a later time, the Person visits the specialist, who confirms the PCP's original diagnosis and provides the appropriate treatment to resolve the condition. These two independent doctor visits should be aggregated into one Condition Era.",,"Each Condition Era corresponds to one or many Condition Occurrence records that form a continuous interval.
The condition_concept_id field contains Concepts that are identical to those of the CONDITION_OCCURRENCE table records that make up the Condition Era. In contrast to Drug Eras, Condition Eras are not aggregated to contain Conditions of different hierarchical layers. The SQl Script for generating CONDITION_ERA records can be found [here](https://ohdsi.github.io/CommonDataModel/sqlScripts.html#condition_eras)
The Condition Era Start Date is the start date of the first Condition Occurrence.
The Condition Era End Date is the end date of the last Condition Occurrence. Condition Eras are built with a Persistence Window of 30 days, meaning, if no occurrence of the same condition_concept_id happens within 30 days of any one occurrence, it will be considered the condition_era_end_date."
METADATA,CDM,No,,No,,,The METADATA table contains metadata information about a dataset that has been transformed to the OMOP Common Data Model.,,
CDM_SOURCE,CDM,No,,No,,,The CDM_SOURCE table contains detail about the source database and the process used to transform the data into the OMOP Common Data Model.,,
CONCEPT,VOCAB,No,,No,,,"The Standardized Vocabularies contains records, or Concepts, that uniquely identify each fundamental unit of meaning used to express clinical information in all domain tables of the CDM. Concepts are derived from vocabularies, which represent clinical information across a domain (e.g. conditions, drugs, procedures) through the use of codes and associated descriptions. Some Concepts are designated Standard Concepts, meaning these Concepts can be used as normative expressions of a clinical entity within the OMOP Common Data Model and within standardized analytics. Each Standard Concept belongs to one domain, which defines the location where the Concept would be expected to occur within data tables of the CDM.
Concepts can represent broad categories (like 'Cardiovascular disease'), detailed clinical elements ('Myocardial infarction of the anterolateral wall') or modifying characteristics and attributes that define Concepts at various levels of detail (severity of a disease, associated morphology, etc.).
Records in the Standardized Vocabularies tables are derived from national or international vocabularies such as SNOMED-CT, RxNorm, and LOINC, or custom Concepts defined to cover various aspects of observational data analysis. ",,
VOCABULARY,VOCAB,No,,No,,,The VOCABULARY table includes a list of the Vocabularies collected from various sources or created de novo by the OMOP community. This reference table is populated with a single record for each Vocabulary source and includes a descriptive name and other associated attributes for the Vocabulary.,,
DOMAIN,VOCAB,No,,No,,,"The DOMAIN table includes a list of OMOP-defined Domains the Concepts of the Standardized Vocabularies can belong to. A Domain defines the set of allowable Concepts for the standardized fields in the CDM tables. For example, the ""Condition"" Domain contains Concepts that describe a condition of a patient, and these Concepts can only be stored in the condition_concept_id field of the CONDITION_OCCURRENCE and CONDITION_ERA tables. This reference table is populated with a single record for each Domain and includes a descriptive name for the Domain.",,
CONCEPT_CLASS,VOCAB,No,,No,,,"The CONCEPT_CLASS table is a reference table, which includes a list of the classifications used to differentiate Concepts within a given Vocabulary. This reference table is populated with a single record for each Concept Class.",,
CONCEPT_RELATIONSHIP,VOCAB,No,,No,,,The CONCEPT_RELATIONSHIP table contains records that define direct relationships between any two Concepts and the nature or type of the relationship. Each type of a relationship is defined in the RELATIONSHIP table.,,
RELATIONSHIP,VOCAB,No,,No,,,The RELATIONSHIP table provides a reference list of all types of relationships that can be used to associate any two concepts in the CONCEPT_RELATIONSHP table.,,
CONCEPT_SYNONYM,VOCAB,No,,No,,,The CONCEPT_SYNONYM table is used to store alternate names and descriptions for Concepts.,,
CONCEPT_ANCESTOR,VOCAB,No,,No,,,"The CONCEPT_ANCESTOR table is designed to simplify observational analysis by providing the complete hierarchical relationships between Concepts. Only direct parent-child relationships between Concepts are stored in the CONCEPT_RELATIONSHIP table. To determine higher level ancestry connections, all individual direct relationships would have to be navigated at analysis time. The CONCEPT_ANCESTOR table includes records for all parent-child relationships, as well as grandparent-grandchild relationships and those of any other level of lineage. Using the CONCEPT_ANCESTOR table allows for querying for all descendants of a hierarchical concept. For example, drug ingredients and drug products are all descendants of a drug class ancestor.
This table is entirely derived from the CONCEPT, CONCEPT_RELATIONSHIP and RELATIONSHIP tables.",,
SOURCE_TO_CONCEPT_MAP,VOCAB,No,,No,,,"The source to concept map table is a legacy data structure within the OMOP Common Data Model, recommended for use in ETL processes to maintain local source codes which are not available as Concepts in the Standardized Vocabularies, and to establish mappings for each source code into a Standard Concept as target_concept_ids that can be used to populate the Common Data Model tables. The SOURCE_TO_CONCEPT_MAP table is no longer populated with content within the Standardized Vocabularies published to the OMOP community.",,
DRUG_STRENGTH,VOCAB,No,,No,,,The DRUG_STRENGTH table contains structured content about the amount or concentration and associated units of a specific ingredient contained within a particular drug product. This table is supplemental information to support standardized analysis of drug utilization.,,
COHORT_DEFINITION,VOCAB,No,,No,,,"The COHORT_DEFINITION table contains records defining a Cohort derived from the data through the associated description and syntax and upon instantiation (execution of the algorithm) placed into the COHORT table. Cohorts are a set of subjects that satisfy a given combination of inclusion criteria for a duration of time. The COHORT_DEFINITION table provides a standardized structure for maintaining the rules governing the inclusion of a subject into a cohort, and can store operational programming code to instantiate the cohort within the OMOP Common Data Model.",,
ATTRIBUTE_DEFINITION,VOCAB,No,,No,,,"The ATTRIBUTE_DEFINITION table contains records to define each attribute
through an associated description and syntax. Attributes are derived elements
that can be selected or calculated for a subject within a cohort. The
ATTRIBUTE_DEFINITION table provides a standardized structure for
maintaining the rules governing the calculation of covariates for a subject in a
cohort, and can store operational programming code to instantiate the
attributes for a given cohort within the OMOP Common Data Model.",,
1 cdmTableName schema isRequired conceptPrefix measurePersonCompleteness measurePersonCompletenessThreshold validation tableDescription userGuidance etlConventions
2 PERSON CDM Yes No This table serves as the central identity management for all Persons in the database. It contains records that uniquely identify each person or patient, and some demographic information. All records in this table are independent Persons. All Persons in a database needs one record in this table, unless they fail data quality requirements specified in the ETL. Persons with no Events should have a record nonetheless. If more than one data source contributes Events to the database, Persons must be reconciled, if possible, across the sources to create one single record per Person. The content of the BIRTH_DATETIME must be equivalent to the content of BIRTH_DAY, BIRTH_MONTH and BIRTH_YEAR.
3 OBSERVATION_PERIOD CDM Yes Yes 0 This table contains records which define spans of time during which two conditions are expected to hold: (i) Clinical Events that happened to the Person are recorded in the Event tables, and (ii) absense of records indicate such Events did not occur during this span of time. For each Person, one or more OBSERVATION_PERIOD records may be present, but they will not overlap or be back to back to each other. Events may exist outside all of the time spans of the OBSERVATION_PERIOD records for a patient, however, absence of an Event outside these time spans cannot be construed as evidence of absence of an Event. Incidence or prevalence rates should only be calculated for the time of active OBSERVATION_PERIOD records. When constructing cohorts, outside Events can be used for inclusion criteria definition, but without any guarantee for the performance of these criteria. Also, OBSERVATION_PERIOD records can be as short as a single day, greatly disturbing the denominator of any rate calculation as part of cohort characterizations. To avoid that, apply minimal observation time as a requirement for any cohort definition. Each Person needs to have at least one OBSERVATION_PERIOD record, which should represent time intervals with a high capture rate of Clinical Events. Some source data have very similar concepts, such as enrollment periods in insurance claims data. In other source data such as most EHR systems these time spans need to be inferred under a set of assumptions. It is the discretion of the ETL developer to define these assumptions. In many ETL solutions the start date of the first occurrence or the first high quality occurrence of a Clinical Event (Condition, Drug, Procedure, Device, Measurement, Visit) is defined as the start of the OBSERVATION_PERIOD record, and the end date of the last occurrence of last high quality occurrence of a Clinical Event, or the end of the database period becomes the end of the OBSERVATOIN_PERIOD for each Person. If a Person only has a single Clinical Event the OBSERVATION_PERIOD record can be as short as one day. Depending on these definitions it is possible that Clinical Events fall outside the time spans defined by OBSERVATION_PERIOD records. Family history or history of Clinical Events generally are not used to generate OBSERVATION_PERIOD records around the time they are referring to. Any two overlapping or adjacent OBSERVATION_PERIOD records have to be merged into one.
4 VISIT_OCCURRENCE CDM No VISIT_ Yes 0 This table contains Events where Persons engage with the healthcare system for a duration of time. They are often also called "Encounters". Visits are defined by a configuration of circumstances under which they occur, such as (i) whether the patient comes to a healthcare institution, the other way around, or the interaction is remote, (ii) whether and what kind of trained medical staff is delivering the service during the Visit, and (iii) whether the Visit is transient or for a longer period involving a stay in bed. The configuration defining the Visit are described by Concepts in the Visit Domain, which form a hierarchical structure, but rolling up to generally familiar Visits adopted in most healthcare systems worldwide: - [Inpatient Visit](https://athena.ohdsi.org/search-terms/terms/9201): Person visiting hospital, at a Care Site, in bed, for duration of more than one day, with physicians and other Providers permanently available to deliver service around the clock - [Emergency Room Visit](https://athena.ohdsi.org/search-terms/terms/9203): Person visiting dedicated healthcare institution for treating emergencies, at a Care Site, within one day, with physicians and Providers permanently available to deliver service around the clock - [Emergency Room and Inpatient Visit](https://athena.ohdsi.org/search-terms/terms/262): Person visiting ER followed by a subsequent Inpatient Visit, where Emergency department is part of hospital, and transition from the ER to other hospital departments is undefined - [Non-hospital institution Visit](https://athena.ohdsi.org/search-terms/terms/42898160): Person visiting dedicated institution for reasons of poor health, at a Care Site, long-term or permanently, with no physician but possibly other Providers permanently available to deliver service around the clock - [Outpatient Visit](https://athena.ohdsi.org/search-terms/terms/9202): Person visiting dedicated ambulatory healthcare institution, at a Care Site, within one day, without bed, with physicians or medical Providers delivering service during Visit - [Home Visit](https://athena.ohdsi.org/search-terms/terms/581476): Provider visiting Person, without a Care Site, within one day, delivering service - [Telehealth Visit](https://athena.ohdsi.org/search-terms/terms/5083): Patient engages with Provider through communication media - [Pharmacy Visit](https://athena.ohdsi.org/search-terms/terms/581458): Person visiting pharmacy for dispensing of Drug, at a Care Site, within one day - [Laboratory Visit](https://athena.ohdsi.org/search-terms/terms/32036): Patient visiting dedicated institution, at a Care Site, within one day, for the purpose of a Measurement. - [Ambulance Visit](https://athena.ohdsi.org/search-terms/terms/581478): Person using transportation service for the purpose of initiating one of the other Visits, without a Care Site, within one day, potentially with Providers accompanying the Visit and delivering service - [Case Management Visit](https://athena.ohdsi.org/search-terms/terms/38004193): Person interacting with healthcare system, without a Care Site, within a day, with no Providers involved, for administrative purposes The Visit duration, or 'length of stay', is defined as VISIT_END_DATE - VISIT_START_DATE. For all Visits this is <1 day, except Inpatient Visits and Non-hospital institution Visits. The CDM also contains the VISIT_DETAIL table where additional information about the Visit is stored, for example, transfers between units during an inpatient Visit. Visits can be derived easily if the source data contain coding systems for Place of Service or Procedures, like CPT codes for well visits. In those cases, the codes can be looked up and mapped to a Standard Visit Concept. Otherwise, Visit Concepts have to be identified in the ETL process. This table will contain concepts in the Visit domain. These concepts are arranged in a hierarchical structure to facilitate cohort definitions by rolling up to generally familiar Visits adopted in most healthcare systems worldwide. Visits can be adjacent to each other, i.e. the end date of one can be identical with the start date of the other. As a consequence, more than one-day Visits or their descendants can be recorded for the same day. Multi-day visits must not overlap, i.e. share days other than start and end days. It is often the case that some logic should be written for how to define visits and how to assign Visit_Concept_Id. For example, in US claims outpatient visits that appear to occur within the time period of an inpatient visit can be rolled into one with the same Visit_Occurrence_Id. In EHR data inpatient visits that are within one day of each other may be strung together to create one visit. It will all depend on the source data and how encounter records should be translated to visit occurrences. Providers can be associated with a Visit through the PROVIDER_ID field, or indirectly through PROCEDURE_OCCURRENCE records linked both to the VISIT and PROVIDER tables.
5 VISIT_DETAIL CDM No VISIT_DETAIL_ Yes 0 The VISIT_DETAIL table is an optional table used to represents details of each record in the parent VISIT_OCCURRENCE table. A good example of this would be the movement between units in a hospital during an inpatient stay or claim lines associated with a one insurance claim. For every record in the VISIT_OCCURRENCE table there may be 0 or more records in the VISIT_DETAIL table with a 1:n relationship where n may be 0. The VISIT_DETAIL table is structurally very similar to VISIT_OCCURRENCE table and belongs to the visit domain. The configuration defining the Visit Detail is described by Concepts in the Visit Domain, which form a hierarchical structure. The Visit Detail record will have an associated to the Visit Occurrence record in two ways: <br> 1. The Visit Detail record will have the VISIT_OCCURRENCE_ID it is associated to 2. The VISIT_DETAIL_CONCEPT_ID will be a descendant of the VISIT_CONCEPT_ID for the Visit. It is not mandatory that the VISIT_DETAIL table be filled in, but if you find that the logic to create VISIT_OCCURRENCE records includes the roll-up of multiple smaller records to create one picture of a Visit then it is a good idea to use VISIT_DETAIL. In EHR data, for example, a Person may be in the hospital but instead of one over-arching Visit their encounters are recorded as times they interacted with a health care provider. A Person in the hospital interacts with multiple providers multiple times a day so the encounters must be strung together using some heuristic (defined by the ETL) to identify the entire Visit. In this case the encounters would be considered Visit Details and the entire Visit would be the Visit Occurrence. In this example it is also possible to use the Vocabulary to distinguish Visit Details from a Visit Occurrence by setting the VISIT_CONCEPT_ID to [9201](https://athena.ohdsi.org/search-terms/terms/9201) and the VISIT_DETAIL_CONCEPT_IDs either to 9201 or its children to indicate where the patient was in the hospital at the time of care.
6 CONDITION_OCCURRENCE CDM No CONDITION_ Yes 0 This table contains records of Events of a Person suggesting the presence of a disease or medical condition stated as a diagnosis, a sign, or a symptom, which is either observed by a Provider or reported by the patient. Conditions are defined by Concepts from the Condition domain, which form a complex hierarchy. As a result, the same Person with the same disease may have multiple Condition records, which belong to the same hierarchical family. Most Condition records are mapped from diagnostic codes, but recorded signs, symptoms and summary descriptions also contribute to this table. Rule out diagnoses should not be recorded in this table, but in reality their negating nature is not always captured in the source data, and other precautions must be taken when when identifying Persons who should suffer from the recorded Condition. Record all conditions as they exist in the source data. Any decisions about diagnosis/phenotype definitions would be done through cohort specifications. These cohorts can be housed in the [COHORT](https://ohdsi.github.io/CommonDataModel/cdm531.html#payer_plan_period) table. Conditions span a time interval from start to end, but are typically recorded as single snapshot records with no end date. The reason is twofold: (i) At the time of the recording the duration is not known and later not recorded, and (ii) the Persons typically cease interacting with the healthcare system when they feel better, which leads to incomplete capture of resolved Conditions. The [CONDITION_ERA](https://ohdsi.github.io/CommonDataModel/cdm531.html#condition_era) table addresses this issue. Family history and past diagnoses ('history of') are not recorded in this table. Instead, they are listed in the [OBSERVATION](https://ohdsi.github.io/CommonDataModel/cdm531.html#observation) table. Codes written in the process of establishing the diagnosis, such as 'question of' of and 'rule out', should not represented here. Instead, they should be recorded in the [OBSERVATION](https://ohdsi.github.io/CommonDataModel/cdm531.html#observation) table, if they are used for analyses. However, this information is not always available. Source codes and source text fields mapped to Standard Concepts of the Condition Domain have to be recorded here.
7 DRUG_EXPOSURE CDM No DRUG_ Yes 0 This table captures records about the exposure to a Drug ingested or otherwise introduced into the body. A Drug is a biochemical substance formulated in such a way that when administered to a Person it will exert a certain biochemical effect on the metabolism. Drugs include prescription and over-the-counter medicines, vaccines, and large-molecule biologic therapies. Radiological devices ingested or applied locally do not count as Drugs. The purpose of records in this table is to indicate an exposure to a certain drug as best as possible. In this context a drug is defined as an active ingredient. Drug Exposures are defined by Concepts from the Drug domain, which form a complex hierarchy. As a result, one DRUG_SOURCE_CONCEPT_ID may map to multiple standard concept ids if it is a combination product. Records in this table represent prescriptions written, prescriptions dispensed, and drugs administered by a provider to name a few. The DRUG_TYPE_CONCEPT_ID can be used to find and filter on these types. This table includes additional information about the drug products, the quantity given, and route of administration. Information about quantity and dose is provided in a variety of different ways and it is important for the ETL to provide as much information as possible from the data. Depending on the provenance of the data fields may be captured differently i.e. quantity for drugs administered may have a separate meaning from quantity for prescriptions dispensed. If a patient has multiple records on the same day for the same drug or procedures the ETL should not de-dupe them unless there is probable reason to believe the item is a true data duplicate. Take note on how to handle refills for prescriptions written.
8 PROCEDURE_OCCURRENCE CDM No PROCEDURE_ Yes 0 This table contains records of activities or processes ordered by, or carried out by, a healthcare provider on the patient with a diagnostic or therapeutic purpose. Lab tests are not a procedure, if something is observed with an expected resulting amount and unit then it should be a measurement. Phlebotomy is a procedure but so trivial that it tends to be rarely captured. It can be assumed that there is a phlebotomy procedure associated with many lab tests, therefore it is unnecessary to add them as separate procedures. If the user finds the same procedure over concurrent days, it is assumed those records are part of a procedure lasting more than a day. This logic is in lieu of the procedure_end_date, which will be added in a future version of the CDM. If a procedure lasts more than a day, then it should be recorded as a separate record for each day the procedure occurred, this logic is in lieu of the PROCEDURE_END_DATE, which will be added in a future version of the CDM. When dealing with duplicate records, the ETL must determine whether to sum them up into one record or keep them separate. Things to consider are: - Same Procedure - Same PROCEDURE_DATETIME - Same Visit Occurrence or Visit Detail - Same Provider - Same Modifier for Procedures. Source codes and source text fields mapped to Standard Concepts of the Procedure Domain have to be recorded here.
9 DEVICE_EXPOSURE CDM No DEVICE_ Yes 0 The Device domain captures information about a person's exposure to a foreign physical object or instrument which is used for diagnostic or therapeutic purposes through a mechanism beyond chemical action. Devices include implantable objects (e.g. pacemakers, stents, artificial joints), medical equipment and supplies (e.g. bandages, crutches, syringes), other instruments used in medical procedures (e.g. sutures, defibrillators) and material used in clinical care (e.g. adhesives, body material, dental material, surgical material). The distinction between Devices or supplies and Procedures are sometimes blurry, but the former are physical objects while the latter are actions, often to apply a Device or supply. Source codes and source text fields mapped to Standard Concepts of the Device Domain have to be recorded here.
10 MEASUREMENT CDM No MEASUREMENT_ Yes 0 The MEASUREMENT table contains records of Measurements, i.e. structured values (numerical or categorical) obtained through systematic and standardized examination or testing of a Person or Person's sample. The MEASUREMENT table contains both orders and results of such Measurements as laboratory tests, vital signs, quantitative findings from pathology reports, etc. Measurements are stored as attribute value pairs, with the attribute as the Measurement Concept and the value representing the result. The value can be a Concept (stored in VALUE_AS_CONCEPT), or a numerical value (VALUE_AS_NUMBER) with a Unit (UNIT_CONCEPT_ID). The Procedure for obtaining the sample is housed in the PROCEDURE_OCCURRENCE table, though it is unnecessary to create a PROCEDURE_OCCURRENCE record for each measurement if one does not exist in the source data. Measurements differ from Observations in that they require a standardized test or some other activity to generate a quantitative or qualitative result. If there is no result, it is assumed that the lab test was conducted but the result was not captured. Measurements are predominately lab tests with a few exceptions, like blood pressure or function tests. Results are given in the form of a value and unit combination. When investigating measurements, look for operator_concept_ids (<, >, etc.). Only records where the source value maps to a Concept in the measurement domain should be included in this table. Even though each Measurement always has a result, the fields VALUE_AS_NUMBER and VALUE_AS_CONCEPT_ID are not mandatory as often the result is not given in the source data. When the result is not known, the Measurement record represents just the fact that the corresponding Measurement was carried out, which in itself is already useful information for some use cases. For some Measurement Concepts, the result is included in the test. For example, ICD10 CONCEPT_ID [45548980](https://athena.ohdsi.org/search-terms/terms/45548980) 'Abnormal level of unspecified serum enzyme' indicates a Measurement and the result (abnormal). In those situations, the CONCEPT_RELATIONSHIP table in addition to the 'Maps to' record contains a second record with the relationship_id set to 'Maps to value'. In this example, the 'Maps to' relationship directs to [4046263](https://athena.ohdsi.org/search-terms/terms/4046263) 'Enzyme measurement' as well as a 'Maps to value' record to [4135493](https://athena.ohdsi.org/search-terms/terms/4135493) 'Abnormal'.
11 OBSERVATION CDM No OBSERVATION_ Yes 0 The OBSERVATION table captures clinical facts about a Person obtained in the context of examination, questioning or a procedure. Any data that cannot be represented by any other domains, such as social and lifestyle facts, medical history, family history, etc. are recorded here. Observations differ from Measurements in that they do not require a standardized test or some other activity to generate clinical fact. Typical observations are medical history, family history, the stated need for certain treatment, social circumstances, lifestyle choices, healthcare utilization patterns, etc. If the generation clinical facts requires a standardized testing such as lab testing or imaging and leads to a standardized result, the data item is recorded in the MEASUREMENT table. If the clinical fact observed determines a sign, symptom, diagnosis of a disease or other medical condition, it is recorded in the CONDITION_OCCURRENCE table. Valid Observation Concepts are not enforced to be from any domain though they still should be Standard Concepts. Records whose Source Values map to any domain besides Condition, Procedure, Drug, Measurement or Device should be stored in the Observation table. Observations can be stored as attribute value pairs, with the attribute as the Observation Concept and the value representing the clinical fact. This fact can be a Concept (stored in VALUE_AS_CONCEPT), a numerical value (VALUE_AS_NUMBER), a verbatim string (VALUE_AS_STRING), or a datetime (VALUE_AS_DATETIME). Even though Observations do not have an explicit result, the clinical fact can be stated separately from the type of Observation in the VALUE_AS_* fields. It is recommended for Observations that are suggestive statements of positive assertion should have a value of 'Yes' (concept_id=4188539), recorded, even though the null value is the equivalent.
12 DEATH CDM No No The death domain contains the clinical event for how and when a Person dies. A person can have up to one record if the source system contains evidence about the Death, such as: Condition in an administrative claim, status of enrollment into a health plan, or explicit record in EHR data.
13 NOTE CDM No Yes 0 The NOTE table captures unstructured information that was recorded by a provider about a patient in free text (in ASCII, or preferably in UTF8 format) notes on a given date. The type of note_text is CLOB or varchar(MAX) depending on RDBMS. HL7/LOINC CDO is a standard for consistent naming of documents to support a range of use cases: retrieval, organization, display, and exchange. It guides the creation of LOINC codes for clinical notes. CDO annotates each document with 5 dimensions: - **Kind of Document**: Characterizes the general structure of the document at a macro level (e.g. Anesthesia Consent) - **Type of Service**: Characterizes the kind of service or activity (e.g. evaluations, consultations, and summaries). The notion of time sequence, e.g., at the beginning (admission) at the end (discharge) is subsumed in this axis. Example: Discharge Teaching. - **Setting**: Setting is an extension of CMS's definitions (e.g. Inpatient, Outpatient) - **Subject Matter Domain (SMD)**: Characterizes the subject matter domain of a note (e.g. Anesthesiology) - **Role**: Characterizes the training or professional level of the author of the document, but does not break down to specialty or subspecialty (e.g. Physician) Each combination of these 5 dimensions rolls up to a unique LOINC code. According to CDO requirements, only 2 of the 5 dimensions are required to properly annotate a document; Kind of Document and any one of the other 4 dimensions. However, not all the permutations of the CDO dimensions will necessarily yield an existing LOINC code. Each of these dimensions are contained in the OMOP Vocabulary under the domain of 'Meas Value' with each dimension represented as a Concept Class.
14 NOTE_NLP CDM No No The NOTE_NLP table encodes all output of NLP on clinical notes. Each row represents a single extracted term from a note.
15 SPECIMEN CDM No SPECIMEN_ Yes 0 The specimen domain contains the records identifying biological samples from a person. Anatomic site is coded at the most specific level of granularity possible, such that higher level classifications can be derived using the Standardized Vocabularies.
16 FACT_RELATIONSHIP CDM No No The FACT_RELATIONSHIP table contains records about the relationships between facts stored as records in any table of the CDM. Relationships can be defined between facts from the same domain, or different domains. Examples of Fact Relationships include: [Person relationships](https://athena.ohdsi.org/search-terms/terms?domain=Relationship&standardConcept=Standard&page=2&pageSize=15&query=) (parent-child), care site relationships (hierarchical organizational structure of facilities within a health system), indication relationship (between drug exposures and associated conditions), usage relationships (of devices during the course of an associated procedure), or facts derived from one another (measurements derived from an associated specimen). All relationships are directional, and each relationship is represented twice symmetrically within the FACT_RELATIONSHIP table. For example, two persons if person_id = 1 is the mother of person_id = 2 two records are in the FACT_RELATIONSHIP table (all strings in fact concept_id records in the Concept table: - Person, 1, Person, 2, parent of - Person, 2, Person, 1, child of
17 LOCATION CDM No No The LOCATION table represents a generic way to capture physical location or address information of Persons and Care Sites. Each address or Location is unique and is present only once in the table. Locations do not contain names, such as the name of a hospital. In order to construct a full address that can be used in the postal service, the address information from the Location needs to be combined with information from the Care Site.
18 CARE_SITE CDM No No The CARE_SITE table contains a list of uniquely identified institutional (physical or organizational) units where healthcare delivery is practiced (offices, wards, hospitals, clinics, etc.). Care site is a unique combination of location_id and place_of_service_source_value. Care site does not take into account the provider (human) information such a specialty. Many source data do not make a distinction between individual and institutional providers. The CARE_SITE table contains the institutional providers. If the source, instead of uniquely identifying individual Care Sites, only provides limited information such as Place of Service, generic or "pooled" Care Site records are listed in the CARE_SITE table. There can be hierarchical and business relationships between Care Sites. For example, wards can belong to clinics or departments, which can in turn belong to hospitals, which in turn can belong to hospital systems, which in turn can belong to HMOs.The relationships between Care Sites are defined in the FACT_RELATIONSHIP table.
19 PROVIDER CDM No No The PROVIDER table contains a list of uniquely identified healthcare providers. These are individuals providing hands-on healthcare to patients, such as physicians, nurses, midwives, physical therapists etc. Many sources do not make a distinction between individual and institutional providers. The PROVIDER table contains the individual providers. If the source, instead of uniquely identifying individual providers, only provides limited information such as specialty, generic or 'pooled' Provider records are listed in the PROVIDER table.
20 PAYER_PLAN_PERIOD CDM No Yes 0 The PAYER_PLAN_PERIOD table captures details of the period of time that a Person is continuously enrolled under a specific health Plan benefit structure from a given Payer. Each Person receiving healthcare is typically covered by a health benefit plan, which pays for (fully or partially), or directly provides, the care. These benefit plans are provided by payers, such as health insurances or state or government agencies. In each plan the details of the health benefits are defined for the Person or her family, and the health benefit Plan might change over time typically with increasing utilization (reaching certain cost thresholds such as deductibles), plan availability and purchasing choices of the Person. The unique combinations of Payer organizations, health benefit Plans and time periods in which they are valid for a Person are recorded in this table. A Person can have multiple, overlapping, Payer_Plan_Periods in this table. For example, medical and drug coverage in the US can be represented by two Payer_Plan_Periods. The details of the benefit structure of the Plan is rarely known, the idea is just to identify that the Plans are different.
21 COST CDM No No The COST table captures records containing the cost of any medical event recorded in one of the OMOP clinical event tables such as DRUG_EXPOSURE, PROCEDURE_OCCURRENCE, VISIT_OCCURRENCE, VISIT_DETAIL, DEVICE_OCCURRENCE, OBSERVATION or MEASUREMENT. Each record in the cost table account for the amount of money transacted for the clinical event. So, the COST table may be used to represent both receivables (charges) and payments (paid), each transaction type represented by its COST_CONCEPT_ID. The COST_TYPE_CONCEPT_ID field will use concepts in the Standardized Vocabularies to designate the source (provenance) of the cost data. A reference to the health plan information in the PAYER_PLAN_PERIOD table is stored in the record for information used for the adjudication system to determine the persons benefit for the clinical event. When dealing with summary costs, the cost of the goods or services the provider provides is often not known directly, but derived from the hospital charges multiplied by an average cost-to-charge ratio. One cost record is generated for each response by a payer. In a claims databases, the payment and payment terms reported by the payer for the goods or services billed will generate one cost record. If the source data has payment information for more than one payer (i.e. primary insurance and secondary insurance payment for one entity), then a cost record is created for each reporting payer. Therefore, it is possible for one procedure to have multiple cost records for each payer, but typically it contains one or no record per entity. Payer reimbursement cost records will be identified by using the PAYER_PLAN_ID field. Drug costs are composed of ingredient cost (the amount charged by the wholesale distributor or manufacturer), the dispensing fee (the amount charged by the pharmacy and the sales tax).
22 DRUG_ERA CDM No Yes 0 A Drug Era is defined as a span of time when the Person is assumed to be exposed to a particular active ingredient. A Drug Era is not the same as a Drug Exposure: Exposures are individual records corresponding to the source when Drug was delivered to the Person, while successive periods of Drug Exposures are combined under certain rules to produce continuous Drug Eras. The SQL script for generating DRUG_ERA records can be found [here](https://ohdsi.github.io/CommonDataModel/sqlScripts.html#drug_eras).
23 DOSE_ERA CDM No Yes 0 A Dose Era is defined as a span of time when the Person is assumed to be exposed to a constant dose of a specific active ingredient. Dose Eras will be derived from records in the DRUG_EXPOSURE table and the Dose information from the DRUG_STRENGTH table using a standardized algorithm. Dose Form information is not taken into account. So, if the patient changes between different formulations, or different manufacturers with the same formulation, the Dose Era is still spanning the entire time of exposure to the Ingredient.
24 CONDITION_ERA CDM No Yes 0 A Condition Era is defined as a span of time when the Person is assumed to have a given condition. Similar to Drug Eras, Condition Eras are chronological periods of Condition Occurrence. Combining individual Condition Occurrences into a single Condition Era serves two purposes: - It allows aggregation of chronic conditions that require frequent ongoing care, instead of treating each Condition Occurrence as an independent event. - It allows aggregation of multiple, closely timed doctor visits for the same Condition to avoid double-counting the Condition Occurrences. For example, consider a Person who visits her Primary Care Physician (PCP) and who is referred to a specialist. At a later time, the Person visits the specialist, who confirms the PCP's original diagnosis and provides the appropriate treatment to resolve the condition. These two independent doctor visits should be aggregated into one Condition Era. Each Condition Era corresponds to one or many Condition Occurrence records that form a continuous interval. The condition_concept_id field contains Concepts that are identical to those of the CONDITION_OCCURRENCE table records that make up the Condition Era. In contrast to Drug Eras, Condition Eras are not aggregated to contain Conditions of different hierarchical layers. The SQl Script for generating CONDITION_ERA records can be found [here](https://ohdsi.github.io/CommonDataModel/sqlScripts.html#condition_eras) The Condition Era Start Date is the start date of the first Condition Occurrence. The Condition Era End Date is the end date of the last Condition Occurrence. Condition Eras are built with a Persistence Window of 30 days, meaning, if no occurrence of the same condition_concept_id happens within 30 days of any one occurrence, it will be considered the condition_era_end_date.
25 METADATA CDM No No The METADATA table contains metadata information about a dataset that has been transformed to the OMOP Common Data Model.
26 CDM_SOURCE CDM No No The CDM_SOURCE table contains detail about the source database and the process used to transform the data into the OMOP Common Data Model.
27 CONCEPT VOCAB No No The Standardized Vocabularies contains records, or Concepts, that uniquely identify each fundamental unit of meaning used to express clinical information in all domain tables of the CDM. Concepts are derived from vocabularies, which represent clinical information across a domain (e.g. conditions, drugs, procedures) through the use of codes and associated descriptions. Some Concepts are designated Standard Concepts, meaning these Concepts can be used as normative expressions of a clinical entity within the OMOP Common Data Model and within standardized analytics. Each Standard Concept belongs to one domain, which defines the location where the Concept would be expected to occur within data tables of the CDM. Concepts can represent broad categories (like 'Cardiovascular disease'), detailed clinical elements ('Myocardial infarction of the anterolateral wall') or modifying characteristics and attributes that define Concepts at various levels of detail (severity of a disease, associated morphology, etc.). Records in the Standardized Vocabularies tables are derived from national or international vocabularies such as SNOMED-CT, RxNorm, and LOINC, or custom Concepts defined to cover various aspects of observational data analysis.
28 VOCABULARY VOCAB No No The VOCABULARY table includes a list of the Vocabularies collected from various sources or created de novo by the OMOP community. This reference table is populated with a single record for each Vocabulary source and includes a descriptive name and other associated attributes for the Vocabulary.
29 DOMAIN VOCAB No No The DOMAIN table includes a list of OMOP-defined Domains the Concepts of the Standardized Vocabularies can belong to. A Domain defines the set of allowable Concepts for the standardized fields in the CDM tables. For example, the "Condition" Domain contains Concepts that describe a condition of a patient, and these Concepts can only be stored in the condition_concept_id field of the CONDITION_OCCURRENCE and CONDITION_ERA tables. This reference table is populated with a single record for each Domain and includes a descriptive name for the Domain.
30 CONCEPT_CLASS VOCAB No No The CONCEPT_CLASS table is a reference table, which includes a list of the classifications used to differentiate Concepts within a given Vocabulary. This reference table is populated with a single record for each Concept Class.
31 CONCEPT_RELATIONSHIP VOCAB No No The CONCEPT_RELATIONSHIP table contains records that define direct relationships between any two Concepts and the nature or type of the relationship. Each type of a relationship is defined in the RELATIONSHIP table.
32 RELATIONSHIP VOCAB No No The RELATIONSHIP table provides a reference list of all types of relationships that can be used to associate any two concepts in the CONCEPT_RELATIONSHP table.
33 CONCEPT_SYNONYM VOCAB No No The CONCEPT_SYNONYM table is used to store alternate names and descriptions for Concepts.
34 CONCEPT_ANCESTOR VOCAB No No The CONCEPT_ANCESTOR table is designed to simplify observational analysis by providing the complete hierarchical relationships between Concepts. Only direct parent-child relationships between Concepts are stored in the CONCEPT_RELATIONSHIP table. To determine higher level ancestry connections, all individual direct relationships would have to be navigated at analysis time. The CONCEPT_ANCESTOR table includes records for all parent-child relationships, as well as grandparent-grandchild relationships and those of any other level of lineage. Using the CONCEPT_ANCESTOR table allows for querying for all descendants of a hierarchical concept. For example, drug ingredients and drug products are all descendants of a drug class ancestor. This table is entirely derived from the CONCEPT, CONCEPT_RELATIONSHIP and RELATIONSHIP tables.
35 SOURCE_TO_CONCEPT_MAP VOCAB No No The source to concept map table is a legacy data structure within the OMOP Common Data Model, recommended for use in ETL processes to maintain local source codes which are not available as Concepts in the Standardized Vocabularies, and to establish mappings for each source code into a Standard Concept as target_concept_ids that can be used to populate the Common Data Model tables. The SOURCE_TO_CONCEPT_MAP table is no longer populated with content within the Standardized Vocabularies published to the OMOP community.
36 DRUG_STRENGTH VOCAB No No The DRUG_STRENGTH table contains structured content about the amount or concentration and associated units of a specific ingredient contained within a particular drug product. This table is supplemental information to support standardized analysis of drug utilization.
37 COHORT_DEFINITION VOCAB No No The COHORT_DEFINITION table contains records defining a Cohort derived from the data through the associated description and syntax and upon instantiation (execution of the algorithm) placed into the COHORT table. Cohorts are a set of subjects that satisfy a given combination of inclusion criteria for a duration of time. The COHORT_DEFINITION table provides a standardized structure for maintaining the rules governing the inclusion of a subject into a cohort, and can store operational programming code to instantiate the cohort within the OMOP Common Data Model.
38 ATTRIBUTE_DEFINITION VOCAB No No The ATTRIBUTE_DEFINITION table contains records to define each attribute through an associated description and syntax. Attributes are derived elements that can be selected or calculated for a subject within a cohort. The ATTRIBUTE_DEFINITION table provides a standardized structure for maintaining the rules governing the calculation of covariates for a subject in a cohort, and can store operational programming code to instantiate the attributes for a given cohort within the OMOP Common Data Model.