OMOP/Documentation/CommonDataModel_Wiki_Files/StandardizedClinicalDataTables/VISIT_DETAIL_CB.md

The VISIT_DETAIL table contains detail information about a record in the VISIT_OCCURRENCE table.

Field	Required	Type	Description
visit_detail_id	Yes	integer	A unique identifier for each Person's visit-detail at a healthcare provider.
person_id	Yes	integer	A foreign key identifier to the Person for whom the visit is recorded. The demographic details of that Person are stored in the PERSON table.
visit_detail_concept_id	Yes	integer	A foreign key that refers to a visit Concept identifier in the Standardized Vocabularies.
visit_start_date	Yes	date	The start date of the visit.
visit_start_datetime	Yes	datetime	The date and time of the visit-detail started.
visit_end_date	Yes	date	The end date of the visit.
visit_end_datetime	No	datetime	The date and time of the visit end.
visit_type_concept_id	Yes	integer	A foreign key to the predefined Concept identifier in the Standardized Vocabularies reflecting the type of source data from which the visit record is derived.
provider_id	No	integer	A foreign key to the provider in the provider table who was associated with the visit.
care_site_id	No	integer	A foreign key to the care site in the care site table where visit occurred
admitting_source_concept_id	No	integer	A foreign key to the predefined concept in the Place of Service Vocabulary reflecting the admitting source for a visit.
discharge_to_concept_id	No	integer	A foreign key to the predefined concept in the Place of Service Vocabulary reflecting the discharge disposition (destination) for a visit.
preceding_visit_detail_id	No	integer	A foreign key to the visit_occurrence table record of the visit immediately preceding this visit.
visit_source_value	No	string	The source code for the visit as it appears in the source data.
visit_source_concept_id	No	Integer	A foreign key to a Concept that refers to the code used in the source.
admitting_source_value	No	string	The source code for the admitting source as it appears in the source data.
discharge_to_source_value	No	string	The source code for the discharge disposition as it appears in the source data.
visit_detail_parent_id	No	integer	A foreign key to the visit_detail table record to represent the immediate parent visit-detail record.
visit_occurrence_id	Yes	integer	A foreign key that refers to the record in the visit_occurrence table

Conventions

• For every record in VISIT_OCCURRENCE there may be 0 or more records in VISIT_DETAIL.
• Records in VISIT_DETAIL will be related to each other sequentially or hierarchically AND will be related to the VISIT_OCCURRENCE table

Example: An entire inpatient stay is represented as one record in the VISIT_OCCURRENCE table. The one inpatient stay is comprised of movements within the hospital, such as to the ER, ICU or medical floor. Each of the visit details may have different start and end datetimes and would each end up as one record in the VISIT_DETAIL table with the same VISIT_OCCURRENCE_ID, related to each other sequentially by using the PRECEDING_VISIT_DETAIL_ID.