description: An extension to support recording of additional contacts, who should be contacted regarding questions arising from the service request. This differs from the requester and responsibleClinician. package_name: fhir.r4.ukcore.stu3.currentbuild derivation: constraint name: ExtensionUKCoreAdditionalContact type: Extension elements: url: pattern: {type: uri, value: 'https://fhir.hl7.org.uk/StructureDefinition/Extension-UKCore-AdditionalContact'} type: uri index: 0 value: short: A link to a the resource to be contacted. choices: [valueReference] index: 2 valueReference: type: Reference short: A link to a the resource to be contacted. choiceOf: value refers: ['http://hl7.org/fhir/StructureDefinition/Organization', 'http://hl7.org/fhir/StructureDefinition/Practitioner', 'http://hl7.org/fhir/StructureDefinition/PractitionerRole'] index: 3 package_version: 0.0.14-pre-release class: extension kind: complex-type url: https://fhir.hl7.org.uk/StructureDefinition/Extension-UKCore-AdditionalContact base: http://hl7.org/fhir/StructureDefinition/Extension version: 1.1.0 required: [value, valueReference]