description: Consumers of the value set and the implementations, projects or standards that the author has utilized the value set in.
package_name: hl7.fhir.core
derivation: constraint
name: Who has used and how?
type: null
elements:
  extension:
    isModifier: false
    short: A consumer of or client for the value set
    index: 0
    name: user
    type: Extension
    elements:
      extension: {name: extension, index: 7}
      url:
        type: uri
        pattern: {type: Uri, value: use}
        index: 8
      value:
        choices: [valueString]
        index: 10
      valueString: {type: string, choiceOf: value, index: 11}
    extensions: {}
    required: [valueString, value]
  url:
    type: uri
    pattern: {type: Uri, value: 'http://hl7.org/fhir/StructureDefinition/codesystem-usage'}
    index: 12
  value:
    choices: []
    index: 14
package_version: 1.4.0
extensions: {}
class: datatype
kind: datatype
url: http://hl7.org/fhir/StructureDefinition/codesystem-usage
base: http://hl7.org/fhir/StructureDefinition/Extension
version: null
required: [extension]