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Generated Narrative: StructureDefinition at-core-ext-address-municipalityKey

Name	Flags	Card.	Type	Description & Constraints
Extension		0..*	Extension	Gemeindekennziffer (GKZ)
Extension.extension		0..0		Extension
Extension.url		1..1	uri	"https://fhir.hl7.at/core/r5/StructureDefinition/at-core-ext-address-municipalityKey"
Extension.value[x]		1..1	string	Value of extension
Documentation for this format

Source1

{
  "resourceType": "StructureDefinition",
  "id": "at-core-ext-address-municipalityKey",
  "text": {
    "status": "extensions",
    "div": "<!-- snip (see above) -->"
  },
  "extension": [
    {
      "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-type-characteristics",
      "valueCode": "can-bind"
    }
  ],
  "url": "https://fhir.hl7.at/core/r5/StructureDefinition/at-core-ext-address-municipalityKey",
  "version": "2.1.0",
  "name": "AddressMunicipalityKey",
  "title": "Address GKZ (Gemeindekennziffer)",
  "status": "active",
  "date": "2026-10-20T08:51:36+00:00",
  "publisher": "HL7® Austria, TC FHIR®",
  "contact": [
    {
      "name": "HL7® Austria, TC FHIR®",
      "telecom": [
        {
          "system": "url",
          "value": "https://hl7.at/technische-komitees/tc-fhir/"
        }
      ]
    },
    {
      "name": "Technical Committee for FHIR® at HL7® Austria",
      "telecom": [
        {
          "system": "email",
          "value": "mailto:tc-fhir@hl7.at"
        }
      ]
    }
  ],
  "description": "HL7® Austria FHIR® Core Extension for the municipality key (Gemeindekennziffer) part of the Austrian address. The municipality key is related to the [municipality code (Gemeindecode)](StructureDefinition-at-core-ext-address-municipalityCode.html). While these two are generally identical, there is one notable exception: in Vienna, the municipality key (Gemeindekennziffer) is consistently 90001, whereas the municipality code (Gemeindecode) varies by district. The current list of values is provided by [Statistik Austria](https://www.statistik.at/verzeichnis/reglisten/gemliste_knz.pdf).",
  "fhirVersion": "5.0.0",
  "mapping": [
    {
      "identity": "rim",
      "uri": "http://hl7.org/v3",
      "name": "RIM Mapping"
    }
  ],
  "kind": "complex-type",
  "abstract": false,
  "context": [
    {
      "type": "element",
      "expression": "Address"
    },
    {
      "type": "element",
      "expression": "https://fhir.hl7.at/core/r5/StructureDefinition/at-core-address#Address"
    }
  ],
  "type": "Extension",
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Extension",
  "derivation": "constraint",
  "snapshot": {
    "extension": [
      {
        "url": "http://hl7.org/fhir/tools/StructureDefinition/snapshot-base-version",
        "valueString": "5.0.0"
      }
    ],
    "element": [
      {
        "id": "Extension",
        "path": "Extension",
        "short": "Gemeindekennziffer (GKZ)",
        "definition": "The Gemeindekennziffer (GKZ) of the Austrian municipality the address belongs to, as published by Statistics Austria (Statistik Austria). It is generally identical to the municipality code (Gemeindecode), except in Vienna, where the Gemeindekennziffer is 90001 for the whole city while the Gemeindecode varies by district.",
        "min": 0,
        "max": "*",
        "base": {
          "path": "Extension",
          "min": 0,
          "max": "*"
        },
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() or (children().count() > id.count())",
            "source": "http://hl7.org/fhir/StructureDefinition/Element"
          },
          {
            "key": "ext-1",
            "severity": "error",
            "human": "Must have either extensions or value[x], not both",
            "expression": "extension.exists() != value.exists()",
            "source": "http://hl7.org/fhir/StructureDefinition/Extension"
          }
        ],
        "isModifier": false
      },
      {
        "id": "Extension.id",
        "path": "Extension.id",
        "representation": [
          "xmlAttr"
        ],
        "short": "Unique id for inter-element referencing",
        "definition": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Element.id",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "extension": [
              {
                "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type",
                "valueUrl": "id"
              }
            ],
            "code": "http://hl7.org/fhirpath/System.String"
          }
        ],
        "condition": [
          "ele-1"
        ],
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          }
        ]
      },
      {
        "id": "Extension.extension",
        "path": "Extension.extension",
        "slicing": {
          "discriminator": [
            {
              "type": "value",
              "path": "url"
            }
          ],
          "description": "Extensions are always sliced by (at least) url",
          "rules": "open"
        },
        "short": "Extension",
        "definition": "An Extension",
        "min": 0,
        "max": "0",
        "base": {
          "path": "Element.extension",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "Extension"
          }
        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() or (children().count() > id.count())",
            "source": "http://hl7.org/fhir/StructureDefinition/Element"
          },
          {
            "key": "ext-1",
            "severity": "error",
            "human": "Must have either extensions or value[x], not both",
            "expression": "extension.exists() != value.exists()",
            "source": "http://hl7.org/fhir/StructureDefinition/Extension"
          }
        ],
        "isModifier": false,
        "isSummary": false
      },
      {
        "id": "Extension.url",
        "path": "Extension.url",
        "representation": [
          "xmlAttr"
        ],
        "short": "identifies the meaning of the extension",
        "definition": "Source of the definition for the extension code - a logical name or a URL.",
        "comment": "The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.url",
          "min": 1,
          "max": "1"
        },
        "type": [
          {
            "extension": [
              {
                "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type",
                "valueUrl": "uri"
              }
            ],
            "code": "http://hl7.org/fhirpath/System.String"
          }
        ],
        "fixedUri": "https://fhir.hl7.at/core/r5/StructureDefinition/at-core-ext-address-municipalityKey",
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Extension.value[x]",
        "path": "Extension.value[x]",
        "short": "Value of extension",
        "definition": "Value of extension - must be one of a constrained set of the data types (see [Extensibility](http://hl7.org/fhir/R5/extensibility.html) for a list).",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "string"
          }
        ],
        "condition": [
          "ext-1"
        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() or (children().count() > id.count())",
            "source": "http://hl7.org/fhir/StructureDefinition/Element"
          }
        ],
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      }
    ]
  },
  "differential": {
    "element": [
      {
        "id": "Extension",
        "path": "Extension",
        "short": "Gemeindekennziffer (GKZ)",
        "definition": "The Gemeindekennziffer (GKZ) of the Austrian municipality the address belongs to, as published by Statistics Austria (Statistik Austria). It is generally identical to the municipality code (Gemeindecode), except in Vienna, where the Gemeindekennziffer is 90001 for the whole city while the Gemeindecode varies by district."
      },
      {
        "id": "Extension.extension",
        "path": "Extension.extension",
        "max": "0"
      },
      {
        "id": "Extension.url",
        "path": "Extension.url",
        "fixedUri": "https://fhir.hl7.at/core/r5/StructureDefinition/at-core-ext-address-municipalityKey"
      },
      {
        "id": "Extension.value[x]",
        "path": "Extension.value[x]",
        "min": 1,
        "type": [
          {
            "code": "string"
          }
        ]
      }
    ]
  }
}