http://terminology.hl7.org/CodeSystem/recommendation-strength|4.0.1

{
  "description" : "A rating system that describes the strength of the recommendation, such as the GRADE, DynaMed, or HGPS systems.",
  "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" : "StrengthOfRecommendationRating",
  "experimental" : false,
  "resourceType" : "CodeSystem",
  "title" : "StrengthOfRecommendationRating",
  "supliment" : null,
  "status" : "draft",
  "id" : "1f1e6522-6d06-5147-84c3-29e192c6f2e4",
  "valueSet" : "http://hl7.org/fhir/ValueSet/recommendation-strength",
  "url" : "http://terminology.hl7.org/CodeSystem/recommendation-strength",
  "identifier" : [ {
    "value" : "urn:oid:2.16.840.1.113883.4.642.4.1268",
    "system" : "urn:ietf:rfc:3986"
  } ],
  "concept" : [ {
    "code" : "strong",
    "display" : "Strong",
    "definition" : "Strong recommendation."
  }, {
    "code" : "weak",
    "display" : "Weak",
    "definition" : "Weak recommendation."
  } ],
  "caseSensitive" : true,
  "version" : "4.0.1",
  "contact" : [ {
    "telecom" : [ {
      "value" : "http://hl7.org/fhir",
      "system" : "url"
    }, {
      "value" : "fhir@lists.hl7.org",
      "system" : "email"
    } ]
  } ]
}