description: This extension represents the planned next pregnancy visit. package_name: ch.fhir.ig.ch-epreg derivation: constraint name: ChEpregExtPlannedNextPregVisit type: Extension elements: extension: {index: 0} url: pattern: {type: uri, value: 'http://fhir.ch/ig/ch-epreg/StructureDefinition/ch-epreg-ext-planned-next-preg-visit'} type: uri index: 1 value: choices: [valueDateTime] index: 3 valueDateTime: {type: dateTime, choiceOf: value, index: 4} package_version: 1.0.0-ballot extensions: {} class: extension kind: complex-type url: http://fhir.ch/ig/ch-epreg/StructureDefinition/ch-epreg-ext-planned-next-preg-visit base: http://hl7.org/fhir/StructureDefinition/Extension version: 1.0.0-ballot required: [value, valueDateTime]