description: This Extension contains a tracking number, such as a case number or file number assigned by an MDI organization, EDRS, or other involved organization to facilitate recognition of common case records across disparate systems and over time.
package_name: hl7.fhir.us.mdi
derivation: constraint
name: ExtensionTrackingNumber
type: Extension
elements:
  url:
    pattern: {type: Uri, value: 'http://hl7.org/fhir/us/mdi/StructureDefinition/Extension-tracking-number'}
    mustSupport: true
    index: 0
  value:
    short: Value of extension
    mustSupport: true
    choices: [valueIdentifier]
    index: 2
  valueIdentifier: {type: Identifier, short: Value of extension, mustSupport: true, choiceOf: value, index: 3}
  value[x]:
    elements:
      type:
        short: Tracking Number Type (extensible value set)
        binding: {strength: extensible, valueSet: 'http://hl7.org/fhir/us/mdi/ValueSet/ValueSet-tracking-number-type'}
        mustSupport: true
        index: 4
      system: {mustSupport: true, index: 5}
      value: {mustSupport: true, index: 6}
package_version: 1.1.0
class: extension
kind: complex-type
url: http://hl7.org/fhir/us/mdi/StructureDefinition/Extension-tracking-number
base: http://hl7.org/fhir/StructureDefinition/Extension
version: 1.1.0