FHIR to OMOP FHIR IG
1.0.0 - INFORMATIVE 1 International flag

FHIR to OMOP FHIR IG, published by HL7 International / Biomedical Research and Regulation. This guide is not an authorized publication; it is the continuous build for version 1.0.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7/fhir-omop-ig/ and changes regularly. See the Directory of published versions

ConceptMap: Encounter Admission Source codes to OMOP (Experimental)

Official URL: http://hl7.org/fhir/uv/omop/ConceptMap/EncounterAdmitSource Version: 1.0.0
Standards status: Informative Active as of 2026-04-02 Computable Name: EncounterAdmitSourceOMOPMapping

An example mapping of FHIR Encounter admission source codes to OMOP concept ids

Language: en

Mapping from (not specified) to (not specified)


Group 1 Mapping from Admit source to https://fhir-terminology.ohdsi.org (OHDSI Standardized Vocabularies)

Source CodeRelationshipTarget CodeComment
hosp-trans (Transferred from other hospital)is equivalent to38004515 (Hospital)
emd (From accident/emergency department)is equivalent to8670 (Emergency Room - Hospital)
outp (From outpatient department)is broader than8756 (Outpatient Hospital)The source code implies any outpatient facility and not just a hospital
born (Born in hospital)is narrower than38004515 (Hospital)
gp (General Practitioner referral)is narrower than8940 (Office)
mp (Medical Practitioner/physician referral)is narrower than8940 (Office)
nursing (From nursing home)is equivalent to8676 (Nursing Facility)
psych (From psychiatric hospital)is broader than8971 (Inpatient Psychiatric Facility)The source code does not imply an inpatient facility
rehab (From rehabilitation facility)is equivalent to38004254 (Rehabilition Clinic/Center)
other(not mapped)