description: This extension allows a Reference to a Composition resource instance that provides structure for organizing the contents of the DiagnosticReport.
package_name: fhir.r4.ukcore.stu2
derivation: constraint
name: ExtensionUKCoreCompositionReference
type: Extension
elements:
  url:
    pattern: {type: uri, value: 'http://hl7.org/fhir/5.0/StructureDefinition/extension-DiagnosticReport.composition'}
    type: uri
    index: 0
  value:
    short: Reference to a Composition resource for the DiagnosticReport structure
    choices: [valueReference]
    index: 2
  valueReference:
    type: Reference
    short: Reference to a Composition resource for the DiagnosticReport structure
    choiceOf: value
    refers: ['https://fhir.hl7.org.uk/StructureDefinition/UKCore-Composition']
    index: 3
package_version: 1.1.3
class: extension
kind: complex-type
url: http://hl7.org/fhir/5.0/StructureDefinition/extension-DiagnosticReport.composition
base: http://hl7.org/fhir/StructureDefinition/Extension
version: 1.0.0
required: [value, valueReference]