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Source1

{
  "resourceType": "ConceptMap",
  "id": "dm-visit-to-omop",
  "text": {
    "status": "generated",
    "div": "<!-- snip (see above) -->"
  },
  "url": "https://hl7.eu/fhir/ig/hl7.eu.fhir.protect-child/ConceptMap/dm-visit-to-omop",
  "version": "0.1.0-ci-build",
  "name": "DmVisitToOmop",
  "title": "DM visit → OMOP",
  "status": "draft",
  "experimental": false,
  "date": "2026-09-28T06:51:47+00:00",
  "publisher": "Protect Child",
  "contact": [
    {
      "name": "Protect Child",
      "telecom": [
        {
          "system": "url",
          "value": "https://protect-child.eu/"
        }
      ]
    }
  ],
  "description": "The OMOP concepts for each column of the DMv1.2 visit table, from the DM → FHIR → OMOP crosswalk. Each target's comment names the OMOP CDM field it fills. `equivalent`: the column's own concept; `narrower`: one of several concepts the column's values map to; `relatedto`: a value, unit or qualifier concept. Concept IDs of 2000000000 and above are PROTECT-CHILD custom concepts (CodeSystem ProtectChildOmopVocabulary).",
  "group": [
    {
      "source": "https://hl7.eu/fhir/ig/hl7.eu.fhir.protect-child/CodeSystem/dm-variable-cs",
      "target": "https://fhir-terminology.ohdsi.org",
      "element": [
        {
          "code": "visit.visit_type",
          "target": [
            {
              "code": "9202",
              "display": "Outpatient Visit",
              "equivalence": "equivalent",
              "comment": "OMOP VISIT_OCCURRENCE.visit_concept_id; vocabulary Visit."
            },
            {
              "code": "2000000002",
              "display": "Pre-transplant visit",
              "equivalence": "narrower",
              "comment": "OMOP OBSERVATION.observation_concept_id; vocabulary PROTECT-CHILD."
            },
            {
              "code": "4081745",
              "display": "Follow-up 1 month",
              "equivalence": "narrower",
              "comment": "OMOP OBSERVATION.observation_concept_id; vocabulary SNOMED."
            },
            {
              "code": "44789369",
              "display": "Follow-up 3 months",
              "equivalence": "narrower",
              "comment": "OMOP OBSERVATION.observation_concept_id; vocabulary SNOMED."
            },
            {
              "code": "4103967",
              "display": "Follow-up 6 months",
              "equivalence": "narrower",
              "comment": "OMOP OBSERVATION.observation_concept_id; vocabulary SNOMED."
            },
            {
              "code": "4081746",
              "display": "Follow-up 1 year",
              "equivalence": "narrower",
              "comment": "OMOP OBSERVATION.observation_concept_id; vocabulary SNOMED."
            },
            {
              "code": "44789049",
              "display": "Follow-up 2 years",
              "equivalence": "narrower",
              "comment": "OMOP OBSERVATION.observation_concept_id; vocabulary SNOMED."
            },
            {
              "code": "2000000003",
              "display": "Clinical event visit",
              "equivalence": "narrower",
              "comment": "OMOP OBSERVATION.observation_concept_id; vocabulary PROTECT-CHILD."
            },
            {
              "code": "2000000004",
              "display": "Termination visit",
              "equivalence": "narrower",
              "comment": "OMOP OBSERVATION.observation_concept_id; vocabulary PROTECT-CHILD."
            }
          ]
        }
      ]
    }
  ]
}