http://terminology.hl7.org/CodeSystem/v3-SubstitutionCondition|2018-08-12

{
  "description" : " Identifies what sort of change is permitted or has occurred between the item that was ordered/requested and the one that was/will be provided.",
  "compose" : null,
  "package" : "hl7.fhir.r4.examples@4.0.1",
  "date" : "2018-08-11T14:00:00Z",
  "meta" : {
    "lastUpdated" : "2018-08-12T00:00:00.000+10:00"
  },
  "publisher" : "HL7, Inc",
  "content" : "complete",
  "property" : [ {
    "uri" : "http://hl7.org/fhir/concept-properties#notSelectable",
    "code" : "notSelectable",
    "type" : "boolean",
    "description" : "Indicates that the code is abstract - only intended to be used as a selector for other concepts"
  } ],
  "name" : "v3.SubstitutionCondition",
  "experimental" : false,
  "resourceType" : "CodeSystem",
  "title" : "v3 Code System SubstitutionCondition",
  "supliment" : null,
  "extension" : [ {
    "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status",
    "valueCode" : "external"
  }, {
    "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm",
    "valueInteger" : 0
  } ],
  "status" : "active",
  "hierarchyMeaning" : "is-a",
  "id" : "58bafb85-896c-55fe-a7ea-e29772c648cd",
  "valueSet" : "http://terminology.hl7.org/ValueSet/v3-SubstitutionCondition",
  "url" : "http://terminology.hl7.org/CodeSystem/v3-SubstitutionCondition",
  "identifier" : [ {
    "value" : "urn:oid:2.16.840.1.113883.5.1071",
    "system" : "urn:ietf:rfc:3986"
  } ],
  "concept" : [ {
    "code" : "_Conditional",
    "concept" : [ {
      "code" : "CONFIRM",
      "display" : "Confirm first",
      "definition" : "Confirmation with Contact Person prior to making any substitutions has or will occur."
    }, {
      "code" : "NOTIFY",
      "display" : "Notify first",
      "definition" : "Notification to the Contact Person, prior to substitution and through normal institutional procedures, has or will be made."
    } ],
    "display" : "Conditional",
    "property" : [ {
      "code" : "notSelectable",
      "valueBoolean" : true
    } ],
    "definition" : "Some conditions may be attached to an allowable substitution.  An allowable substitution is based on a match to any other attributes that may be specified."
  }, {
    "code" : "NOSUB",
    "display" : "No substitution",
    "definition" : "Substitution is not permitted."
  }, {
    "code" : "UNCOND",
    "display" : "Unconditional",
    "definition" : "No conditions are required."
  } ],
  "caseSensitive" : true,
  "version" : "2018-08-12",
  "contact" : [ {
    "telecom" : [ {
      "value" : "http://hl7.org",
      "system" : "url"
    } ]
  } ]
}