description: States what the diagnostic report is about if it is not the subject of the report
package_name: hl7.fhir.uv.extensions.r3
derivation: constraint
name: DRFocus
type: Extension
elements:
  extension: {index: 0}
  url:
    pattern: {type: uri, value: 'http://hl7.org/fhir/StructureDefinition/diagnosticReport-focus'}
    type: uri
    index: 1
  value:
    choices: [valueReference]
    index: 3
  valueReference:
    type: Reference
    choiceOf: value
    refers: ['http://hl7.org/fhir/StructureDefinition/Resource']
    index: 4
package_version: 5.3.0-ballot
extensions: {}
class: extension
kind: complex-type
url: http://hl7.org/fhir/StructureDefinition/diagnosticReport-focus
base: http://hl7.org/fhir/StructureDefinition/Extension
version: 5.3.0-ballot
required: [value, valueReference]