description: 'R4B: `ImmunizationRecommendation.recommendation.seriesDoses[x]` additional types (positiveInt) additional types from child elements (value)' package_name: hl7.fhir.uv.xver-r4b.r5 derivation: constraint name: ExtensionImmunizationRecommendation_Recommendation_SeriesDoses type: Extension elements: url: base: {max: '1', min: 1, path: Extension.url} pattern: {type: Uri, value: 'http://hl7.org/fhir/4.3/StructureDefinition/extension-ImmunizationRecommendation.recommendation.seriesDoses'} index: 0 value: short: Recommended number of doses for immunity choices: [valuePositiveInt] base: {max: '1', min: 0, path: 'Extension.value[x]'} index: 2 valuePositiveInt: short: Recommended number of doses for immunity type: positiveInt base: {max: '1', min: 0, path: 'Extension.value[x]'} choiceOf: value index: 3 package_version: 0.1.0 class: extension kind: complex-type url: http://hl7.org/fhir/4.3/StructureDefinition/extension-ImmunizationRecommendation.recommendation.seriesDoses base: http://hl7.org/fhir/StructureDefinition/Extension|5.0.0 version: 0.1.0 required: [url]