description: Extension on Condition to define the onset period. package_name: nictiz.fhir.nl.stu3.geboortezorg derivation: constraint name: bc-condition-onsetPeriod type: Extension elements: url: pattern: {type: Uri, value: 'http://nictiz.nl/fhir/StructureDefinition/bc-condition-onsetPeriod'} index: 0 valueCodeableConcept: type: CodeableConcept index: 1 slicing: slices: valueCodeableConcept: match: {} schema: {type: CodeableConcept, index: 1} package_version: 1.3.3-rc3 class: extension kind: complex-type url: http://nictiz.nl/fhir/StructureDefinition/bc-condition-onsetPeriod base: http://hl7.org/fhir/StructureDefinition/Extension version: null