{
  "resourceType": "ValueSet",
  "id": "answerSetBeforeOrAfter1991",
  "url": "https://demis.rki.de/fhir/ValueSet/answerSetBeforeOrAfter1991",
  "version": "1.0.1",
  "name": "AnswerSetBeforeOrAfter1991",
  "title": "Anwort Vor oder nach 1991",
  "status": "active",
  "experimental": false,
  "date": "2024-09-02",
  "publisher": "Robert Koch-Institut",
  "description": "Das ValueSet AnswerSetBeforeOrAfter1991 enthält die Codes der Antwortmöglichkeiten für vor 1991 und für 1991 und später.",
  "compose": {
    "include": [
      {
        "system": "https://demis.rki.de/fhir/CodeSystem/beforeOrAfter1991",
        "version": "1.0.0"
      },
      {
        "system": "http://terminology.hl7.org/CodeSystem/v3-NullFlavor",
        "version": "2.1.0",
        "concept": [
          {
            "extension": [
              {
                "url": "http://hl7.org/fhir/StructureDefinition/valueset-conceptOrder",
                "valueInteger": 999
              }
            ],
            "code": "ASKU",
            "display": "asked but unknown"
          },
          {
            "extension": [
              {
                "url": "http://hl7.org/fhir/StructureDefinition/valueset-conceptOrder",
                "valueInteger": 1000
              }
            ],
            "code": "NASK",
            "display": "not asked"
          }
        ]
      }
    ]
  }
}