{
  "resourceType": "StructureDefinition",
  "id": "contactId",
  "url": "https://fhir.centraxx.de/extension/address/cxxContactId",
  "version": "2025.4.0",
  "name": "contactId",
  "status": "active",
  "publisher": "Kairos an IQVIA business",
  "fhirVersion": "4.0.1",
  "kind": "complex-type",
  "abstract": false,
  "type": "Extension",
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Extension",
  "derivation": "constraint",
  "differential": {
    "element": [
      {
        "id": "Extension",
        "path": "Extension",
        "min": 1,
        "max": "1"
      },
      {
        "id": "Extension.extension",
        "path": "Extension.extension",
        "slicing": {
          "discriminator": [
            {
              "type": "value",
              "path": "url"
            }
          ],
          "rules": "closed"
        },
        "min": 0,
        "max": "0",
        "type": [
          {
            "code": "Extension"
          }
        ],
        "mustSupport": true
      },
      {
        "id": "Extension.url",
        "path": "Extension.url",
        "min": 1,
        "max": "1",
        "fixedUri": "https://fhir.centraxx.de/extension/address/cxxContactId",
        "mustSupport": true
      },
      {
        "id": "Extension.value[x]",
        "path": "Extension.value[x]",
        "min": 1,
        "max": "1",
        "type": [
          {
            "code": "string"
          }
        ],
        "mustSupport": true,
        "binding": {
          "strength": "required",
          "valueSet": "https://fhir.centraxx.de/valueSet/contactAddress/cxxContactId"
        }
      }
    ]
  }
}