description: Flag denoting whether parent item is preferred - e.g., a preferred address or telephone number.
package_name: rs/hl7.fhir.r5.core
derivation: constraint
name: preferred
type: Extension
elements:
  extension: {index: 0}
  url:
    pattern: {type: uri, value: 'http://hl7.org/fhir/StructureDefinition/iso21090-preferred'}
    type: uri
    index: 1
  value:
    choices: [valueBoolean]
    index: 3
  valueBoolean: {type: boolean, choiceOf: value, index: 4}
package_version: 4.5.0
extensions: {}
class: extension
kind: complex-type
url: http://hl7.org/fhir/StructureDefinition/iso21090-preferred
base: http://hl7.org/fhir/StructureDefinition/Extension
version: 4.5.0
required: [value, valueBoolean]