description: This cross-version extension represents ImagingStudy.series.instance.content from http://hl7.org/fhir/StructureDefinition/ImagingStudy|1.0.2 for use in FHIR R4. package_name: hl7.fhir.uv.xver derivation: constraint name: ext_R2_ImagingStudy_se_in_content type: Extension elements: value: base: {path: 'Extension.value[x]'} short: Content of the instance choices: [valueAttachment] index: 1 valueAttachment: base: {path: 'Extension.value[x]'} type: Attachment short: Content of the instance choiceOf: value index: 2 url: pattern: {type: Uri, value: 'http://hl7.org/fhir/1.0/StructureDefinition/extension-ImagingStudy.series.instance.content'} index: 3 package_version: r2.r4-0.0.1-snapshot-1 class: extension kind: complex-type url: http://hl7.org/fhir/1.0/StructureDefinition/extension-ImagingStudy.series.instance.content base: http://hl7.org/fhir/StructureDefinition/Extension version: 0.0.1-snapshot-1 required: [url]