<status value="active" /> <experimental value="false" /> <date value="2026-03-26" /> <publisher value="gematik GmbH" /> <contact> <telecom> <system value="url" /> <value value="http://gematik.de/" /> </telecom> </contact> <description value="Fügt die Extension basedOn hinzu, die es in R4 bereits für Invoice gab (https://hl7.org/fhir/R4/extension-event-basedon.html) leider im aktuellen Extension Pack aber nicht mehr den Context Invoice hat." /> <fhirVersion value="4.0.1" /> <kind value="complex-type" /> <abstract value="false" /> <context> <type value="element" /> <expression value="Invoice" /> </context> <type value="Extension" /> <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Extension" /> <derivation value="constraint" /> <differential> <element id="Extension.extension"> <path value="Extension.extension" /> <max value="0" /> </element> <element id="Extension.url"> <path value="Extension.url" /> <fixedUri value="https://gematik.de/fhir/dipag/StructureDefinition/DiPagInvoiceBasedOn" /> </element> <element id="Extension.value[x]"> <path value="Extension.value[x]" /> <type> <code value="Identifier" /> </type> </element> </differential> </StructureDefinition>