description: Flag denoting whether parent item is preferred - e.g., a preferred address or telephone number.
package_name: rs/hl7.fhir.r3.core
derivation: constraint
name: preferred
type: Extension
elements:
  extension: {index: 0}
  url:
    type: uri
    pattern: {type: uri, value: 'http://hl7.org/fhir/StructureDefinition/iso21090-preferred'}
    index: 1
  valueBoolean: {type: boolean, index: 2}
package_version: 3.0.2
extensions: {}
class: extension
kind: complex-type
url: http://hl7.org/fhir/StructureDefinition/iso21090-preferred
base: http://hl7.org/fhir/StructureDefinition/Extension
version: null