{
  "resourceType": "StructureDefinition",
  "id": "identifier-iknr",
  "url": "http://fhir.de/StructureDefinition/identifier-iknr",
  "version": "1.6.0-ballot",
  "name": "IdentifierIknr",
  "title": "Identifier-Profil für die Abbildung eines Institutionskennzeichens (IKNR)",
  "status": "active",
  "experimental": false,
  "date": "2025-12-23",
  "publisher": "HL7 Deutschland e.V. (Technisches Komitee FHIR)",
  "contact": [
    {
      "telecom": [
        {
          "system": "url",
          "value": "http://hl7.de/technische-komitees/fhir/"
        }
      ]
    }
  ],
  "description": "Identifier-Profil für die Abbildung eines Institutionskennzeichens (IKNR)",
  "fhirVersion": "4.0.1",
  "kind": "complex-type",
  "abstract": false,
  "type": "Identifier",
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Identifier",
  "derivation": "constraint",
  "differential": {
    "element": [
      {
        "id": "Identifier.type",
        "path": "Identifier.type",
        "patternCodeableConcept": {
          "coding": [
            {
              "code": "XX",
              "system": "http://terminology.hl7.org/CodeSystem/v2-0203"
            }
          ]
        },
        "binding": {
          "strength": "extensible",
          "valueSet": "http://fhir.de/ValueSet/identifier-type-de-basis"
        }
      },
      {
        "id": "Identifier.system",
        "path": "Identifier.system",
        "min": 1,
        "fixedUri": "http://fhir.de/sid/arge-ik/iknr"
      },
      {
        "id": "Identifier.value",
        "path": "Identifier.value",
        "min": 1,
        "constraint": [
          {
            "key": "ik-1",
            "severity": "warning",
            "human": "Eine IK muss eine numerische 9-stellige Zeichenkette (mit Prüfziffer) sein",
            "expression": "matches('^[0-9]{9}$')",
            "source": "http://fhir.de/StructureDefinition/identifier-iknr"
          }
        ]
      }
    ]
  }
}