description: Extension on Observation.value[x] to add data type Reference.
package_name: nictiz.fhir.nl.stu3.geboortezorg
derivation: constraint
name: bc-observation-valuereference
type: Extension
elements:
  url:
    pattern: {type: Uri, value: 'http://nictiz.nl/fhir/StructureDefinition/bc-observation-valuereference'}
    index: 0
  valueReference: {type: Reference, index: 1}
package_version: 3.0.0
class: extension
kind: complex-type
url: http://nictiz.nl/fhir/StructureDefinition/bc-observation-valuereference
base: http://hl7.org/fhir/StructureDefinition/Extension
version: null