description: Provides a link to an assessment of prognosis or risk as informed by the diagnostic results (For example, genetic results and possibly by patient genetic family history information).  This extension is used when need RiskAssessment as an alternate choice  for `Observation.hasMember` or `DiagnosticReport.result`.
package_name: hl7.fhir.r5.core
derivation: constraint
name: risk
type: Extension
elements:
  extension: {index: 0}
  url:
    pattern: {type: Uri, value: 'http://hl7.org/fhir/StructureDefinition/diagnosticReport-risk'}
    index: 1
  value:
    choices: [valueReference]
    index: 3
  valueReference:
    type: Reference
    choiceOf: value
    refers: ['http://hl7.org/fhir/StructureDefinition/RiskAssessment']
    index: 4
package_version: 4.5.0
extensions: {}
class: extension
kind: complex-type
url: http://hl7.org/fhir/StructureDefinition/diagnosticReport-risk
base: http://hl7.org/fhir/StructureDefinition/Extension
version: 4.5.0
required: [valueReference, value]