description: If true, indicates that the Questionnaire relies on metadata from the ElementDefinitions referenced by item.definition and that rendering or validating the Questionnaire is likely to be unsafe if the system isn't capable of resolving the definition and using the metadata found there.
package_name: hl7.fhir.r5.core
derivation: constraint
name: DefinitionBased
type: Extension
elements:
  extension: {index: 0}
  url:
    pattern: {type: Uri, value: 'http://hl7.org/fhir/StructureDefinition/questionnaire-definitionBased'}
    index: 1
  value:
    choices: [valueBoolean]
    index: 3
  valueBoolean: {type: boolean, choiceOf: value, index: 4}
package_version: 5.0.0-snapshot1
extensions: {}
class: extension
kind: complex-type
url: http://hl7.org/fhir/StructureDefinition/questionnaire-definitionBased
base: http://hl7.org/fhir/StructureDefinition/Extension
version: 5.0.0-snapshot1
required: [value, valueBoolean]