OMOP/inst/csv/OMOP_CDMv5.3_Field_Level.csv

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	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
38	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
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.	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	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	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
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.	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	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
115	DEVICE_EXPOSURE	person_id	Yes	integer			No	Yes	PERSON	PERSON_ID
116	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
117	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
118	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
119	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
120	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
121	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
122	DEVICE_EXPOSURE	unique_device_id	No	varchar(50)	This is the Unique Device Identification 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
123	DEVICE_EXPOSURE	quantity	No	integer			No	No
124	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
125	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
126	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
127	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
128	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
129	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
130	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
131	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
132	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
133	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
134	MEASUREMENT	measurement_time	No	varchar(10)		This is present for backwards compatibility and will be deprecated in an upcoming version.	No	No
135	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
136	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
137	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
138	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
139	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
140	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
141	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
142	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
143	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
144	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
145	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
146	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
147	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
148	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
149	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
150	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
151	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
152	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
153	OBSERVATION	observation_datetime	No	datetime		If no time is given set to midnight (00:00:00).	No	No
154	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
155	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
156	OBSERVATION	value_as_string	No	varchar(60)	This is the categorical value of the Result of the Observation, if applicable and available.		No	No
157	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
158	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
159	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
160	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
161	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
162	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
163	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
164	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
165	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
166	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
167	DEATH	person_id	Yes	integer			No	Yes	PERSON	PERSON_ID
168	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
169	DEATH	death_datetime	No	datetime		If not available set time to midnight (00:00:00)	No	No
170	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
171	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
172	DEATH	cause_source_value	No	varchar(50)		If available, put the source code representing the cause of death here.	No	No
173	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
174	NOTE	note_id	Yes	integer	A unique identifier for each note.		Yes	No
175	NOTE	person_id	Yes	integer			No	Yes	PERSON	PERSON_ID
176	NOTE	note_date	Yes	date	The date the note was recorded.		No	No
177	NOTE	note_datetime	No	datetime		If time is not given set the time to midnight.	No	No
178	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
179	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
180	NOTE	note_title	No	varchar(250)	The title of the note.		No	No
181	NOTE	note_text	Yes	varchar(MAX)	The content of the note.		No	No
182	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
183	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
184	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
185	NOTE	visit_occurrence_id	No	integer	The Visit during which the note was written.		No	Yes	VISIT_OCCURRENCE	VISIT_OCCURRENCE_ID
186	NOTE	visit_detail_id	No	integer	The Visit Detail during which the note was written.		No	Yes	VISIT_DETAIL	VISIT_DETAIL_ID
187	NOTE	note_source_value	No	varchar(50)		The source value mapped to the NOTE_CLASS_CONCEPT_ID.	No	No
188	NOTE_NLP	note_nlp_id	Yes	integer	A unique identifier for the NLP record.		Yes	No
189	NOTE_NLP	note_id	Yes	integer	This is the NOTE_ID for the NOTE record the NLP record is associated to.		No	No
190	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
191	NOTE_NLP	snippet	No	varchar(250)	A small window of text surrounding the term		No	No
192	NOTE_NLP	offset	No	varchar(50)	Character offset of the extracted term in the input note		No	No
193	NOTE_NLP	lexical_variant	Yes	varchar(250)	Raw text extracted from the NLP tool.		No	No
194	NOTE_NLP	note_nlp_concept_id	No	integer			No	Yes	CONCEPT	CONCEPT_ID
195	NOTE_NLP	note_nlp_source_concept_id	No	integer			No	Yes	CONCEPT	CONCEPT_ID
196	NOTE_NLP	nlp_system	No	varchar(250)		Name and version of the NLP system that extracted the term. Useful for data provenance.	No	No
197	NOTE_NLP	nlp_date	Yes	date	The date of the note processing.		No	No
198	NOTE_NLP	nlp_datetime	No	datetime	The date and time of the note processing.		No	No
199	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
200	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
201	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
202	SPECIMEN	specimen_id	Yes	integer	Unique identifier for each specimen.		Yes	No
203	SPECIMEN	person_id	Yes	integer	The person from whom the specimen is collected.		No	Yes	PERSON	PERSON_ID
204	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
205	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
206	SPECIMEN	specimen_date	Yes	date	The date the specimen was collected.		No	No
207	SPECIMEN	specimen_datetime	No	datetime			No	No
208	SPECIMEN	quantity	No	float	The amount of specimen collected from the person.		No	No
209	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
210	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
211	SPECIMEN	disease_status_concept_id	No	integer			No	Yes	CONCEPT	CONCEPT_ID
212	SPECIMEN	specimen_source_id	No	varchar(50)	This is the identifier for the specimen from the source system.		No	No
213	SPECIMEN	specimen_source_value	No	varchar(50)			No	No
214	SPECIMEN	unit_source_value	No	varchar(50)		This unit for the quantity of the specimen, as represented in the source.	No	No
215	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
216	SPECIMEN	disease_status_source_value	No	varchar(50)			No	No
217	FACT_RELATIONSHIP	domain_concept_id_1	Yes	integer			No	Yes	CONCEPT	CONCEPT_ID
218	FACT_RELATIONSHIP	fact_id_1	Yes	integer			No	No
219	FACT_RELATIONSHIP	domain_concept_id_2	Yes	integer			No	Yes	CONCEPT	CONCEPT_ID
220	FACT_RELATIONSHIP	fact_id_2	Yes	integer			No	No
221	FACT_RELATIONSHIP	relationship_concept_id	Yes	integer			No	Yes	CONCEPT	CONCEPT_ID
222	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
223	LOCATION	address_1	No	varchar(50)	This is the first line of the address.		No	No
224	LOCATION	address_2	No	varchar(50)	This is the second line of the address		No	No
225	LOCATION	city	No	varchar(50)			No	No
226	LOCATION	state	No	varchar(2)			No	No
227	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
228	LOCATION	county	No	varchar(20)			No	No
229	LOCATION	location_source_value	No	varchar(50)		Put the verbatim value for the location here, as it shows up in the source.	No	No
230	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
231	CARE_SITE	care_site_name	No	varchar(255)	The name of the care_site as it appears in the source data		No	No
232	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
233	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
234	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
235	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
236	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
237	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
238	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
239	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
240	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
241	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
242	PROVIDER	year_of_birth	No	integer			No	No
243	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
244	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
245	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
246	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
247	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
248	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
249	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
250	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
251	PAYER_PLAN_PERIOD	payer_plan_period_start_date	Yes	date	Start date of Plan coverage.		No	No
252	PAYER_PLAN_PERIOD	payer_plan_period_end_date	Yes	date	End date of Plan coverage.		No	No
253	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
254	PAYER_PLAN_PERIOD	payer_source_value	No	varchar(50)	This is the Payer as it appears in the source data.		No	No
255	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
256	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
257	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
258	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
259	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
260	PAYER_PLAN_PERIOD	sponsor_source_value	No	varchar(50)	The Plan sponsor as it appears in the source data.		No	No
261	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
262	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
263	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
264	PAYER_PLAN_PERIOD	stop_reason_source_value	No	varchar(50)	The Plan stop reason as it appears in the source data.		No	No
265	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
266	COST	cost_id	Yes	integer			Yes	No
267	COST	cost_event_id	Yes	integer			No	No
268	COST	cost_domain_id	Yes	varchar(20)			No	Yes	DOMAIN	DOMAIN_ID
269	COST	cost_type_concept_id	Yes	integer			No	Yes	CONCEPT	CONCEPT_ID
270	COST	currency_concept_id	No	integer			No	Yes	CONCEPT	CONCEPT_ID
271	COST	total_charge	No	float			No	No
272	COST	total_cost	No	float			No	No
273	COST	total_paid	No	float			No	No
274	COST	paid_by_payer	No	float			No	No
275	COST	paid_by_patient	No	float			No	No
276	COST	paid_patient_copay	No	float			No	No
277	COST	paid_patient_coinsurance	No	float			No	No
278	COST	paid_patient_deductible	No	float			No	No
279	COST	paid_by_primary	No	float			No	No
280	COST	paid_ingredient_cost	No	float			No	No
281	COST	paid_dispensing_fee	No	float			No	No
282	COST	payer_plan_period_id	No	integer			No	No
283	COST	amount_allowed	No	float			No	No
284	COST	revenue_code_concept_id	No	integer			No	Yes	CONCEPT	CONCEPT_ID
285	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
286	COST	drg_concept_id	No	integer			No	Yes	CONCEPT	CONCEPT_ID
287	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
288	DRUG_ERA	drug_era_id	Yes	integer			Yes	No
289	DRUG_ERA	person_id	Yes	integer			No	Yes	PERSON	PERSON_ID
290	DRUG_ERA	drug_concept_id	Yes	integer	The Concept Id representing the specific drug ingredient.		No	Yes	CONCEPT	CONCEPT_ID	Drug	Ingredient
291	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
292	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
293	DRUG_ERA	drug_exposure_count	No	integer			No	No
294	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
295	DOSE_ERA	dose_era_id	Yes	integer			Yes	No
296	DOSE_ERA	person_id	Yes	integer			No	Yes	PERSON	PERSON_ID
297	DOSE_ERA	drug_concept_id	Yes	integer	The Concept Id representing the specific drug ingredient.		No	Yes	CONCEPT	CONCEPT_ID	Drug	Ingredient
298	DOSE_ERA	unit_concept_id	Yes	integer	The Concept Id representing the unit of the specific drug ingredient.		No	Yes	CONCEPT	CONCEPT_ID	Unit
299	DOSE_ERA	dose_value	Yes	float	The numeric value of the dosage of the drug_ingredient.		No	No
300	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
301	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
302	CONDITION_ERA	condition_era_id	Yes	integer			Yes	No
303	CONDITION_ERA	person_id	Yes	integer			No	No	PERSON	PERSON_ID
304	CONDITION_ERA	condition_concept_id	Yes	integer	The Concept Id representing the Condition.		No	Yes	CONCEPT	CONCEPT_ID	Condition
305	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
306	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
307	CONDITION_ERA	condition_occurrence_count	No	integer	The number of individual Condition Occurrences used to construct the condition era.		No	No
308	METADATA	metadata_concept_id	Yes	integer			No	Yes	CONCEPT	CONCEPT_ID
309	METADATA	metadata_type_concept_id	Yes	integer			No	Yes	CONCEPT	CONCEPT_ID
310	METADATA	name	Yes	varchar(250)			No	No
311	METADATA	value_as_string	No	varchar(250)			No	No
312	METADATA	value_as_concept_id	No	integer			No	Yes	CONCEPT	CONCEPT_ID
313	METADATA	metadata_date	No	date			No	No
314	METADATA	metadata_datetime	No	datetime			No	No
315	CDM_SOURCE	cdm_source_name	Yes	varchar(255)	The name of the CDM instance.		No	No
316	CDM_SOURCE	cdm_source_abbreviation	No	varchar(25)	The abbreviation of the CDM instance.		No	No
317	CDM_SOURCE	cdm_holder	No	varchar(255)	The holder of the CDM instance.		No	No
318	CDM_SOURCE	source_description	No	varchar(MAX)	The description of the CDM instance.		No	No
319	CDM_SOURCE	source_documentation_reference	No	varchar(255)			No	No
320	CDM_SOURCE	cdm_etl_reference	No	varchar(255)		Put the link to the CDM version used.	No	No
321	CDM_SOURCE	source_release_date	No	date	The release date of the source data.		No	No
322	CDM_SOURCE	cdm_release_date	No	date	The release data of the CDM instance.		No	No
323	CDM_SOURCE	cdm_version	No	varchar(10)			No	No
324	CDM_SOURCE	vocabulary_version	No	varchar(20)			No	No
325	CONCEPT	concept_id	Yes	integer	A unique identifier for each Concept across all domains.		Yes	No
326	CONCEPT	concept_name	Yes	varchar(255)	An unambiguous, meaningful and descriptive name for the Concept.		No	No
327	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
328	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
329	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
330	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
331	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
332	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
333	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
334	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
335	VOCABULARY	vocabulary_id	Yes	varchar(20)	A unique identifier for each Vocabulary, such as ICD9CM, SNOMED, Visit.		Yes	No
336	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
337	VOCABULARY	vocabulary_reference	Yes	varchar(255)	External reference to documentation or available download of the about the vocabulary.		No	No
338	VOCABULARY	vocabulary_version	No	varchar(255)	Version of the Vocabulary as indicated in the source.		No	No
339	VOCABULARY	vocabulary_concept_id	Yes	integer	A Concept that represents the Vocabulary the VOCABULARY record belongs to.		No	Yes	CONCEPT	CONCEPT_ID
340	DOMAIN	domain_id	Yes	varchar(20)	A unique key for each domain.		Yes	No
341	DOMAIN	domain_name	Yes	varchar(255)	The name describing the Domain, e.g. Condition, Procedure, Measurement etc.		No	No
342	DOMAIN	domain_concept_id	Yes	integer	A Concept representing the Domain Concept the DOMAIN record belongs to.		No	Yes	CONCEPT	CONCEPT_ID
343	CONCEPT_CLASS	concept_class_id	Yes	varchar(20)	A unique key for each class.		Yes	No
344	CONCEPT_CLASS	concept_class_name	Yes	varchar(255)	The name describing the Concept Class, e.g. Clinical Finding, Ingredient, etc.		No	No
345	CONCEPT_CLASS	concept_class_concept_id	Yes	integer	A Concept that represents the Concept Class.		No	Yes	CONCEPT	CONCEPT_ID
346	CONCEPT_RELATIONSHIP	concept_id_1	Yes	integer			No	Yes	CONCEPT	CONCEPT_ID
347	CONCEPT_RELATIONSHIP	concept_id_2	Yes	integer			No	Yes	CONCEPT	CONCEPT_ID
348	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
349	CONCEPT_RELATIONSHIP	valid_start_date	Yes	date	The date when the relationship is first recorded.		No	No
350	CONCEPT_RELATIONSHIP	valid_end_date	Yes	date	The date when the relationship is invalidated.		No	No
351	CONCEPT_RELATIONSHIP	invalid_reason	No	varchar(1)	Reason the relationship was invalidated. Possible values are 'D' (deleted), 'U' (updated) or NULL.		No	No
352	RELATIONSHIP	relationship_id	Yes	varchar(20)	The type of relationship captured by the relationship record.		Yes	No
353	RELATIONSHIP	relationship_name	Yes	varchar(255)			No	No
354	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
355	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
356	RELATIONSHIP	reverse_relationship_id	Yes	varchar(20)	The identifier for the relationship used to define the reverse relationship between two concepts.		No	No
357	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
358	CONCEPT_SYNONYM	concept_id	Yes	integer			No	Yes	CONCEPT	CONCEPT_ID
359	CONCEPT_SYNONYM	concept_synonym_name	Yes	varchar(1000)			No	No
360	CONCEPT_SYNONYM	language_concept_id	Yes	integer			No	Yes	CONCEPT	CONCEPT_ID
361	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
362	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
363	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
364	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
365	SOURCE_TO_CONCEPT_MAP	source_code	Yes	varchar(50)	The source code being translated into a Standard Concept.		No	No
366	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
367	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
368	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
369	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
370	SOURCE_TO_CONCEPT_MAP	target_vocabulary_id	Yes	varchar(20)	The Vocabulary of the target Concept.		No	Yes	VOCABULARY	VOCABULARY_ID
371	SOURCE_TO_CONCEPT_MAP	valid_start_date	Yes	date	The date when the mapping instance was first recorded.		No	No
372	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
373	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
374	DRUG_STRENGTH	drug_concept_id	Yes	integer	The Concept representing the Branded Drug or Clinical Drug Product.		No	Yes	CONCEPT	CONCEPT_ID
375	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
376	DRUG_STRENGTH	amount_value	No	float	The numeric value or the amount of active ingredient contained within the drug product.		No	No
377	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
378	DRUG_STRENGTH	numerator_value	No	float	The concentration of the active ingredient contained within the drug product.		No	No
379	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
380	DRUG_STRENGTH	denominator_value	No	float	The amount of total liquid (or other divisible product, such as ointment, gel, spray, etc.).		No	No
381	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
382	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
383	DRUG_STRENGTH	valid_start_date	Yes	date	The date when the Concept was first recorded. The default value is <<<<<<< HEAD:inst/csv/OMOP_CDMv5.3_Field_Level.csv 1-Jan-1970.		No	No
384	DRUG_STRENGTH	valid_end_date	Yes	date	The date when then Concept became invalid.		No	No
385	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
386	COHORT_DEFINITION	cohort_definition_id	Yes	integer	This is the identifier given to the cohort, usually by the ATLAS application		No	No
387	COHORT_DEFINITION	cohort_definition_name	Yes	varchar(255)	A short description of the cohort		No	No
388	COHORT_DEFINITION	cohort_definition_description	No	varchar(MAX)	A complete description of the cohort.		No	No
389	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
390	COHORT_DEFINITION	cohort_definition_syntax	No	varchar(MAX)	Syntax or code to operationalize the Cohort Definition.		No	No
391	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
392	COHORT_DEFINITION	cohort_initiation_date	No	date	A date to indicate when the Cohort was initiated in the COHORT table.		No	No
393	ATTRIBUTE_DEFINITION	attribute_definition_id	Yes	integer			No	No
394	ATTRIBUTE_DEFINITION	attribute_name	Yes	varchar(255)			No	No
395	ATTRIBUTE_DEFINITION	attribute_description	No	varchar(MAX)			No	No
396	ATTRIBUTE_DEFINITION	attribute_type_concept_id	Yes	integer			No	Yes	CONCEPT	CONCEPT_ID
397	ATTRIBUTE_DEFINITION	attribute_syntax	No	varchar(MAX)			No	No