<status value="active" /> <experimental value="false" /> <date value="2025-09-17" /> <publisher value="Robert Koch-Institut" /> <description value="Erweiterung zur Darstellung des Regionalschlüssels und des Regionalbezugsystems" /> <fhirVersion value="4.0.1" /> <kind value="complex-type" /> <abstract value="false" /> <context> <type value="element" /> <expression value="Patient.address" /> </context> <type value="Extension" /> <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Extension" /> <derivation value="constraint" /> <differential> <element id="Extension"> <path value="Extension" /> <short value="Regionalschlüssel und Regionalbezugsystem" /> <definition value="Erweiterung zur Darstellung des Regionalschlüssels und des Regionalbezugsystems" /> </element> <element id="Extension.extension"> <path value="Extension.extension" /> <slicing> <discriminator> <type value="value" /> <path value="url" /> </discriminator> <description value="Extensions are always sliced by (at least) url" /> <rules value="closed" /> </slicing> </element> <element id="Extension.extension:regionKey"> <path value="Extension.extension" /> <sliceName value="regionKey" /> <min value="0" /> <max value="1" /> </element> <element id="Extension.extension:regionKey.extension"> <path value="Extension.extension.extension" /> <max value="0" /> </element> <element id="Extension.extension:regionKey.url"> <path value="Extension.extension.url" /> <fixedUri value="regionKey" /> </element> <element id="Extension.extension:regionKey.value[x]"> <path value="Extension.extension.value[x]" /> <short value="Regionschlüssel" /> <definition value="Regionalschlüssel der betroffenen Person" /> <min value="1" /> <type> <code value="string" /> </type> <maxLength value="12" /> <mustSupport value="true" /> <binding> <strength value="required" /> <valueSet value="https://emiga.rki.de/fhir/ValueSet/RegionKeys" /> </binding> </element> <element id="Extension.extension:regionReferenceSystem"> <path value="Extension.extension" /> <sliceName value="regionReferenceSystem" /> <min value="0" /> <max value="1" /> </element> <element id="Extension.extension:regionReferenceSystem.extension"> <path value="Extension.extension.extension" /> <max value="0" /> </element> <element id="Extension.extension:regionReferenceSystem.url"> <path value="Extension.extension.url" /> <fixedUri value="regionReferenceSystem" /> </element> <element id="Extension.extension:regionReferenceSystem.value[x]"> <path value="Extension.extension.value[x]" /> <short value="Regionalbezugsystem" /> <definition value="Regionalbezugsystem des Regionschlüssels" /> <min value="1" /> <type> <code value="string" /> </type> <mustSupport value="true" /> </element> <element id="Extension.url"> <path value="Extension.url" /> <fixedUri value="https://emiga.rki.de/fhir/common/Extension/RegionalKey" /> </element> <element id="Extension.value[x]"> <path value="Extension.value[x]" /> <max value="0" /> </element> </differential> </StructureDefinition>