{
  "resourceType": "StructureDefinition",
  "id": "extension-age-period",
  "url": "http://fhir.recaresolutions.com/StructureDefinition/extension-age-period",
  "version": "0.1.0",
  "name": "RecareAgePeriod",
  "title": "Recare Age Period",
  "status": "active",
  "experimental": false,
  "publisher": "Recare Deutschland GmbH",
  "description": "Extension to convey a patient's approximate birth year range when the exact birth date is masked.",
  "fhirVersion": "4.0.1",
  "kind": "complex-type",
  "abstract": false,
  "context": [
    {
      "expression": "date",
      "type": "element"
    }
  ],
  "type": "Extension",
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Extension",
  "derivation": "constraint",
  "differential": {
    "element": [
      {
        "id": "Extension",
        "path": "Extension",
        "short": "Recare Age Period",
        "definition": "Extension to convey a patient's approximate birth year range when the exact birth date is masked."
      },
      {
        "id": "Extension.extension",
        "path": "Extension.extension",
        "max": "0"
      },
      {
        "id": "Extension.url",
        "path": "Extension.url",
        "fixedUri": "http://fhir.recaresolutions.com/StructureDefinition/extension-age-period"
      },
      {
        "id": "Extension.value[x]",
        "path": "Extension.value[x]",
        "type": [
          {
            "code": "Period"
          }
        ]
      },
      {
        "id": "Extension.value[x].start",
        "path": "Extension.value[x].start",
        "min": 1
      },
      {
        "id": "Extension.value[x].end",
        "path": "Extension.value[x].end",
        "min": 1
      }
    ]
  }
}