description: Record details about the anatomical location of a specimen or body part. This resource may be used when a coded concept does not provide the necessary detail needed for the use case. package_name: rs/hl7.fhir.core derivation: constraint name: BodyStructure Reference type: Extension elements: extension: {index: 0} url: type: uri pattern: {type: uri, value: 'http://hl7.org/fhir/StructureDefinition/bodySite'} index: 1 valueReference: type: Reference refers: ['http://hl7.org/fhir/StructureDefinition/BodyStructure'] index: 2 package_version: 3.5.0 extensions: {} class: extension kind: complex-type url: http://hl7.org/fhir/StructureDefinition/bodySite base: http://hl7.org/fhir/StructureDefinition/Extension version: null