description: This cross-version extension represents ElementDefinition.base.min from http://hl7.org/fhir/StructureDefinition/ElementDefinition|1.0.2 for use in FHIR R4B. package_name: hl7.fhir.uv.xver-r2.r4b derivation: constraint name: ext_R2_ElementDefinition_ba_min type: Extension elements: value: base: {path: 'Extension.value[x]'} short: Min cardinality of the base element choices: [valueInteger] index: 1 valueInteger: base: {path: 'Extension.value[x]'} type: integer short: Min cardinality of the base element choiceOf: value index: 2 url: pattern: {type: uri, value: 'http://hl7.org/fhir/1.0/StructureDefinition/extension-ElementDefinition.base.min'} type: uri index: 3 package_version: 0.0.1-snapshot-1 class: extension kind: complex-type url: http://hl7.org/fhir/1.0/StructureDefinition/extension-ElementDefinition.base.min base: http://hl7.org/fhir/StructureDefinition/Extension version: 0.0.1-snapshot-1 required: [url]