description: allow for a check digit and a check digit scheme to be conveyed as part of Naming System.    The rules of the ID Type determine if the check digit is part of the ID value or sent    separately.
package_name: hl7.fhir.r5.core
derivation: constraint
name: NSCheckDigit
type: Extension
elements:
  extension: {index: 0}
  url:
    pattern: {type: Uri, value: 'http://hl7.org/fhir/StructureDefinition/namingsystem-checkDigit'}
    index: 1
  value:
    choices: [valueString]
    index: 3
  valueString: {type: string, choiceOf: value, index: 4}
package_version: 5.0.0-snapshot3
extensions: {}
class: extension
kind: complex-type
url: http://hl7.org/fhir/StructureDefinition/namingsystem-checkDigit
base: http://hl7.org/fhir/StructureDefinition/Extension
version: 5.0.0-snapshot3
required: [valueString, value]