description: This cross-version extension represents Basic.created from http://hl7.org/fhir/StructureDefinition/Basic|5.0.0 for use in FHIR R4B. package_name: hl7.fhir.uv.xver-r5.r4b derivation: constraint name: ext_R5_Basic_created type: Extension elements: url: pattern: {type: uri, value: 'http://hl7.org/fhir/5.0/StructureDefinition/extension-Basic.created'} type: uri index: 0 package_version: 0.0.1-snapshot-1 class: extension kind: complex-type url: http://hl7.org/fhir/5.0/StructureDefinition/extension-Basic.created base: http://hl7.org/fhir/StructureDefinition/Extension version: 0.0.1-snapshot-1 required: [url]