http://terminology.hl7.org/CodeSystem/match-grade|4.0.1

{
  "description" : "A Master Patient Index (MPI) assessment of whether a candidate patient record is a match or not.",
  "compose" : null,
  "package" : "hl7.fhir.r4.core@4.0.1",
  "date" : "2019-10-31T22:29:23Z",
  "meta" : {
    "lastUpdated" : "2019-11-01T09:29:23.356+11:00"
  },
  "publisher" : "HL7 (FHIR Project)",
  "content" : "complete",
  "name" : "MatchGrade",
  "experimental" : false,
  "resourceType" : "CodeSystem",
  "title" : "MatchGrade",
  "supliment" : null,
  "status" : "draft",
  "id" : "249bf75b-3b00-51b0-8e15-151f0d5ab8f0",
  "valueSet" : "http://hl7.org/fhir/ValueSet/match-grade",
  "url" : "http://terminology.hl7.org/CodeSystem/match-grade",
  "identifier" : [ {
    "value" : "urn:oid:2.16.840.1.113883.4.642.4.1289",
    "system" : "urn:ietf:rfc:3986"
  } ],
  "concept" : [ {
    "code" : "certain",
    "display" : "Certain Match",
    "definition" : "This record meets the matching criteria to be automatically considered as a full match."
  }, {
    "code" : "probable",
    "display" : "Probable Match",
    "definition" : "This record is a close match, but not a certain match. Additional review (e.g. by a human) may be required before using this as a match."
  }, {
    "code" : "possible",
    "display" : "Possible Match",
    "definition" : "This record may be a matching one. Additional review (e.g. by a human) SHOULD be performed before using this as a match."
  }, {
    "code" : "certainly-not",
    "display" : "Certainly Not a Match",
    "definition" : "This record is known not to be a match. Note that usually non-matching records are not returned, but in some cases records previously or likely considered as a match may specifically be negated by the matching engine."
  } ],
  "caseSensitive" : true,
  "version" : "4.0.1",
  "contact" : [ {
    "telecom" : [ {
      "value" : "http://hl7.org/fhir",
      "system" : "url"
    }, {
      "value" : "fhir@lists.hl7.org",
      "system" : "email"
    } ]
  } ]
}