description: This extension contains the phone number for reporting a status or a result. This is represented in v2 as OBR-17 Order Callback Phone Number ID 00250. package_name: hl7.fhir.uv.extensions.r3 derivation: constraint name: SROrderCallbackPhoneNumber type: Extension elements: extension: {index: 0} url: pattern: {type: Uri, value: 'http://hl7.org/fhir/StructureDefinition/servicerequest-order-callback-phone-number'} index: 1 value: choices: [valueContactPoint] index: 3 valueContactPoint: {type: ContactPoint, choiceOf: value, index: 4} package_version: 5.1.0-ballot1 extensions: {} class: extension kind: complex-type url: http://hl7.org/fhir/StructureDefinition/servicerequest-order-callback-phone-number base: http://hl7.org/fhir/StructureDefinition/Extension version: 5.1.0-ballot1 required: [valueContactPoint, value]