description: The report replaces the target resource. For example, when a final anatomic pathology report replaces a preliminary anatomic pathology report replaces where the subsequent observation of case and report may be on more or different material (specimen). Note that this is not same concept as` DiagnosticReport.status` = preliminary of final, but industry definition of preliminary and final. package_name: hl7.fhir.uv.extensions.r5 derivation: constraint name: DRReplaces type: Extension elements: extension: {index: 0} url: pattern: {type: Uri, value: 'http://hl7.org/fhir/StructureDefinition/diagnosticReport-replaces'} index: 1 value: choices: [valueReference] index: 3 valueReference: type: Reference choiceOf: value refers: ['http://hl7.org/fhir/StructureDefinition/DiagnosticReport'] index: 4 package_version: 5.3.0-ballot-tc1 extensions: {} class: extension kind: complex-type url: http://hl7.org/fhir/StructureDefinition/diagnosticReport-replaces base: http://hl7.org/fhir/StructureDefinition/Extension version: 5.3.0-ballot-tc1 required: [valueReference, value]