description: An extension to replicate the changes within R6 to support adding a reference to the body part affected by the diagnosed condition. package_name: fhir.r4.ukcore.stu3.currentbuild derivation: constraint name: ExtensionUKCoreConditionBodyStructure type: Extension elements: url: pattern: {type: uri, value: 'http://hl7.org/fhir/6.0/StructureDefinition/extension-Condition.bodyStructure'} type: uri index: 0 value: choices: [valueReference] index: 2 valueReference: type: Reference choiceOf: value refers: ['http://hl7.org/fhir/StructureDefinition/BodyStructure'] index: 3 package_version: 0.0.18-pre-release class: extension kind: complex-type url: http://hl7.org/fhir/6.0/StructureDefinition/extension-Condition.bodyStructure base: http://hl7.org/fhir/StructureDefinition/Extension version: 0.0.1 required: [value, valueReference]