{
  "resourceType": "StructureDefinition",
  "id": "GKVSV-EX-TA7-IK-Empfaenger",
  "url": "https://fhir.gkvsv.de/StructureDefinition/GKVSV_EX_TA7_IK_Empfaenger",
  "version": "1.5.1",
  "name": "GKVSV_EX_TA7_IK_Empfaenger",
  "title": "GKVSV_EX_TA7_IK_Empfaenger",
  "status": "active",
  "date": "2025-03-31",
  "description": "Institutionskennzeichen des Empfängers",
  "fhirVersion": "4.0.1",
  "kind": "complex-type",
  "abstract": false,
  "context": [
    {
      "type": "element",
      "expression": "Composition"
    }
  ],
  "type": "Extension",
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Extension",
  "derivation": "constraint",
  "differential": {
    "element": [
      {
        "id": "Extension",
        "path": "Extension",
        "short": "Receiver IK",
        "definition": "Institutionskennzeichen des Empfängers"
      },
      {
        "id": "Extension.url",
        "path": "Extension.url",
        "fixedUri": "https://fhir.gkvsv.de/StructureDefinition/GKVSV_EX_TA7_IK_Empfaenger"
      },
      {
        "id": "Extension.value[x]",
        "path": "Extension.value[x]",
        "min": 1,
        "type": [
          {
            "code": "Identifier"
          }
        ]
      },
      {
        "id": "Extension.value[x].use",
        "path": "Extension.value[x].use",
        "max": "0"
      },
      {
        "id": "Extension.value[x].type",
        "path": "Extension.value[x].type",
        "max": "0"
      },
      {
        "id": "Extension.value[x].system",
        "path": "Extension.value[x].system",
        "min": 1,
        "fixedUri": "http://fhir.de/sid/arge-ik/iknr"
      },
      {
        "id": "Extension.value[x].value",
        "path": "Extension.value[x].value",
        "short": "IK des Empfängers",
        "definition": "Institutionskennzeichen des Empfängers mit Entschlüsselungsbefugnis, bei Krankenkassen das IK aus der Kostenträgerdatei",
        "min": 1,
        "constraint": [
          {
            "key": "EmpfaengerIK-length",
            "severity": "error",
            "human": "Die IK des Empfängers muss 9 Zeichen lang und numerisch sein.",
            "expression": "toString().matches('^\\\\d{9}$')",
            "source": "https://fhir.gkvsv.de/StructureDefinition/GKVSV_EX_TA7_IK_Empfaenger"
          }
        ]
      },
      {
        "id": "Extension.value[x].period",
        "path": "Extension.value[x].period",
        "max": "0"
      },
      {
        "id": "Extension.value[x].assigner",
        "path": "Extension.value[x].assigner",
        "max": "0"
      }
    ]
  }
}