{
  "description": "Erweiterung zur Darstellung des Regionalschlüssels und des Regionalbezugsystems",
  "_filename": "StructureDefinition-RegionalKey.json",
  "package_name": "rki.emiga.common",
  "date": "2026-05-19",
  "derivation": "constraint",
  "publisher": "Robert Koch-Institut",
  "fhirVersion": "4.0.1",
  "name": "RegionalKey",
  "abstract": false,
  "type": "Extension",
  "experimental": "false",
  "resourceType": "StructureDefinition",
  "title": "Regionalschlüssel und Regionalbezugsystem",
  "package_version": "1.2.0-alpha.25",
  "status": "active",
  "id": "869f3780-dca5-4240-a4c0-dad2fdd49501",
  "kind": "complex-type",
  "url": "https://emiga.rki.de/fhir/common/Extension/RegionalKey",
  "context": [ {
    "type": "element",
    "expression": "Patient.address"
  } ],
  "version": "0.2.0",
  "differential": {
    "element": [ {
      "id": "Extension",
      "path": "Extension",
      "short": "Regionalschlüssel und Regionalbezugsystem",
      "definition": "Erweiterung zur Darstellung des Regionalschlüssels und des Regionalbezugsystems"
    }, {
      "id": "Extension.extension",
      "path": "Extension.extension",
      "slicing": {
        "rules": "closed",
        "description": "Extensions are always sliced by (at least) url",
        "discriminator": [ {
          "path": "url",
          "type": "value"
        } ]
      }
    }, {
      "id": "Extension.extension:regionKey",
      "max": "1",
      "min": 0,
      "path": "Extension.extension",
      "sliceName": "regionKey"
    }, {
      "id": "Extension.extension:regionKey.extension",
      "max": "0",
      "path": "Extension.extension.extension"
    }, {
      "id": "Extension.extension:regionKey.url",
      "path": "Extension.extension.url",
      "fixedUri": "regionKey"
    }, {
      "id": "Extension.extension:regionKey.value[x]",
      "min": 1,
      "path": "Extension.extension.value[x]",
      "type": [ {
        "code": "string"
      } ],
      "short": "Regionalschlüssel",
      "binding": {
        "strength": "required",
        "valueSet": "https://emiga.rki.de/fhir/ValueSet/RegionKeys"
      },
      "constraint": [ {
        "key": "validRegionKey",
        "human": "Der Regionalschlüssel soll genau 12 Ziffern enthalten.",
        "source": "https://emiga.rki.de/fhir/common/Extension/RegionalKey",
        "severity": "error",
        "expression": "$this.matches('^[0-9]{12}$')"
      } ],
      "definition": "Regionalschlüssel der betroffenen Person"
    }, {
      "id": "Extension.extension:regionReferenceSystem",
      "max": "1",
      "min": 0,
      "path": "Extension.extension",
      "sliceName": "regionReferenceSystem"
    }, {
      "id": "Extension.extension:regionReferenceSystem.extension",
      "max": "0",
      "path": "Extension.extension.extension"
    }, {
      "id": "Extension.extension:regionReferenceSystem.url",
      "path": "Extension.extension.url",
      "fixedUri": "regionReferenceSystem"
    }, {
      "id": "Extension.extension:regionReferenceSystem.value[x]",
      "path": "Extension.extension.value[x]",
      "type": [ {
        "code": "string"
      } ],
      "short": "Regionalbezugsystem",
      "definition": "Regionalbezugsystem des Regionschlüssels"
    }, {
      "id": "Extension.url",
      "path": "Extension.url",
      "fixedUri": "https://emiga.rki.de/fhir/common/Extension/RegionalKey"
    }, {
      "id": "Extension.value[x]",
      "max": "0",
      "path": "Extension.value[x]"
    } ]
  },
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Extension"
}