http://hl7.org/fhir/questionnaire-enable-operator|4.0.1

{
  "description" : "The criteria by which a question is enabled.",
  "compose" : null,
  "package" : "hl7.fhir.r4.examples@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" : "QuestionnaireItemOperator",
  "experimental" : false,
  "resourceType" : "CodeSystem",
  "title" : "QuestionnaireItemOperator",
  "supliment" : null,
  "extension" : [ {
    "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-wg",
    "valueCode" : "fhir"
  }, {
    "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status",
    "valueCode" : "trial-use"
  }, {
    "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm",
    "valueInteger" : 3
  } ],
  "status" : "draft",
  "id" : "c5e92f41-374d-5c02-a624-f41a9daf9d33",
  "valueSet" : "http://hl7.org/fhir/ValueSet/questionnaire-enable-operator",
  "url" : "http://hl7.org/fhir/questionnaire-enable-operator",
  "identifier" : [ {
    "value" : "urn:oid:2.16.840.1.113883.4.642.4.1006",
    "system" : "urn:ietf:rfc:3986"
  } ],
  "concept" : [ {
    "code" : "exists",
    "display" : "Exists",
    "definition" : "True if whether an answer exists is equal to the enableWhen answer (which must be a boolean)."
  }, {
    "code" : "=",
    "display" : "Equals",
    "definition" : "True if whether at least one answer has a value that is equal to the enableWhen answer."
  }, {
    "code" : "!=",
    "display" : "Not Equals",
    "definition" : "True if whether at least no answer has a value that is equal to the enableWhen answer."
  }, {
    "code" : ">",
    "display" : "Greater Than",
    "definition" : "True if whether at least no answer has a value that is greater than the enableWhen answer."
  }, {
    "code" : "<",
    "display" : "Less Than",
    "definition" : "True if whether at least no answer has a value that is less than the enableWhen answer."
  }, {
    "code" : ">=",
    "display" : "Greater or Equals",
    "definition" : "True if whether at least no answer has a value that is greater or equal to the enableWhen answer."
  }, {
    "code" : "<=",
    "display" : "Less or Equals",
    "definition" : "True if whether at least no answer has a value that is less or equal to the enableWhen answer."
  } ],
  "caseSensitive" : true,
  "version" : "4.0.1",
  "contact" : [ {
    "telecom" : [ {
      "value" : "http://hl7.org/fhir",
      "system" : "url"
    }, {
      "value" : "fhir@lists.hl7.org",
      "system" : "email"
    } ]
  } ]
}