description: The reason a member has chosen to opt out of data sharing package_name: hl7.fhir.us.davinci-pdex derivation: constraint name: OptOutReason type: Extension elements: extension: {index: 0} url: pattern: {type: Uri, value: 'http://hl7.org/fhir/us/davinci-pdex/StructureDefinition/opt-out-reason'} index: 1 value: short: Reason for opt-out choices: [valueCodeableConcept] index: 3 valueCodeableConcept: {type: CodeableConcept, short: Reason for opt-out, choiceOf: value, index: 4} package_version: 2.2.0 extensions: {} class: extension kind: complex-type url: http://hl7.org/fhir/us/davinci-pdex/StructureDefinition/opt-out-reason base: http://hl7.org/fhir/StructureDefinition/Extension version: 2.2.0 required: [value, valueCodeableConcept]