OMOP Visit-domain codes (example subset)

omop-visit-codes OMOP domain: Visit 2 includes

Codes that route a FHIR Encounter to the OMOP `visit_occurrence` table via Encounter.class. Authoritative expansion: vocab.concept WHERE domain_id = 'Visit' AND standard_concept = 'S' (~25 standard concepts spanning Visit and CMS Place of Service vocabularies). The compose below lists illustrative HL7 v3 ActCode encounter classes plus a couple of CMS POS examples — the real expansion comes from the loaded Athena vocabularies.

compose.include

include · v3 ActCode

no OMOP alias 6 codes

http://terminology.hl7.org/CodeSystem/v3-ActCode

Code	Display
IMP	Inpatient encounter
AMB	Ambulatory
EMER	Emergency
OBSENC	Observation encounter
SS	Short stay
HH	Home health

include · CMS POS

vocab: CMS Place of Serviceloaded ✓ 3 codes

https://www.cms.gov/Medicare/Coding/place-of-service-codes

Code	Display
11	Office
21	Inpatient Hospital
23	Emergency Room - Hospital

Authoritative expansion (run against the loaded Athena vocab)

SELECT vocabulary_id, concept_code, concept_name FROM vocab.concept WHERE domain_id = 'Visit' AND standard_concept = 'S'

Raw JSON

{
  "resourceType": "ValueSet",
  "id": "omop-visit-codes",
  "url": "https://fhir2omop.health-samurai.io/ValueSet/omop-visit-codes",
  "version": "0.1.0",
  "name": "OmopVisitCodes",
  "title": "OMOP Visit-domain codes (example subset)",
  "status": "draft",
  "experimental": true,
  "description": "Codes that route a FHIR Encounter to the OMOP `visit_occurrence` table via Encounter.class. Authoritative expansion: vocab.concept WHERE domain_id = 'Visit' AND standard_concept = 'S' (~25 standard concepts spanning Visit and CMS Place of Service vocabularies). The compose below lists illustrative HL7 v3 ActCode encounter classes plus a couple of CMS POS examples — the real expansion comes from the loaded Athena vocabularies.",
  "extension": [
    {
      "url": "https://fhir2omop.health-samurai.io/StructureDefinition/omop-domain",
      "valueString": "Visit"
    },
    {
      "url": "https://fhir2omop.health-samurai.io/StructureDefinition/omop-expansion-sql",
      "valueString": "SELECT vocabulary_id, concept_code, concept_name FROM vocab.concept WHERE domain_id = 'Visit' AND standard_concept = 'S'"
    }
  ],
  "compose": {
    "include": [
      {
        "system": "http://terminology.hl7.org/CodeSystem/v3-ActCode",
        "concept": [
          {
            "code": "IMP",
            "display": "Inpatient encounter"
          },
          {
            "code": "AMB",
            "display": "Ambulatory"
          },
          {
            "code": "EMER",
            "display": "Emergency"
          },
          {
            "code": "OBSENC",
            "display": "Observation encounter"
          },
          {
            "code": "SS",
            "display": "Short stay"
          },
          {
            "code": "HH",
            "display": "Home health"
          }
        ]
      },
      {
        "system": "https://www.cms.gov/Medicare/Coding/place-of-service-codes",
        "concept": [
          {
            "code": "11",
            "display": "Office"
          },
          {
            "code": "21",
            "display": "Inpatient Hospital"
          },
          {
            "code": "23",
            "display": "Emergency Room - Hospital"
          }
        ]
      }
    ]
  },
  "domain": "Visit",
  "expansionSql": "SELECT vocabulary_id, concept_code, concept_name FROM vocab.concept WHERE domain_id = 'Visit' AND standard_concept = 'S'"
}