description: Extension to indicate the source system that provided an observation
package_name: dot.cdr-implementation-guide
derivation: constraint
name: CDRObservationSource
type: Extension
elements:
  extension: {index: 0}
  url:
    pattern: {type: uri, value: 'http://example.org/fhir/ImplementationGuide/hl7.fhir.cdr/StructureDefinition/cdr-observation-source'}
    type: uri
    index: 1
  value:
    choices: [valueCodeableConcept]
    index: 3
  valueCodeableConcept: {type: CodeableConcept, choiceOf: value, index: 4}
package_version: 1.0.0
extensions: {}
class: extension
kind: complex-type
url: http://example.org/fhir/ImplementationGuide/hl7.fhir.cdr/StructureDefinition/cdr-observation-source
base: http://hl7.org/fhir/StructureDefinition/Extension
version: 1.0.0