{
  "description": "The kind of operation to perform as a part of a property based filter.",
  "_filename": "codesystem-filter-operator.json",
  "package_name": "hl7.fhir.core",
  "date": "2016-03-31T08:01:25+11:00",
  "meta": {
    "lastUpdated": "2016-03-31T08:01:25.570+11:00"
  },
  "publisher": "HL7 (FHIR Project)",
  "content": "complete",
  "name": "FilterOperator",
  "type": null,
  "experimental": "false",
  "resourceType": "CodeSystem",
  "title": null,
  "package_version": "1.4.0",
  "extension": [ {
    "url": "http://hl7.org/fhir/StructureDefinition/valueset-oid",
    "valueUri": "urn:oid:2.16.840.1.113883.4.642.1.280"
  } ],
  "status": "draft",
  "id": "876af587-e273-4c26-bd97-111de9fad31b",
  "valueSet": "http://hl7.org/fhir/ValueSet/filter-operator",
  "kind": null,
  "url": "http://hl7.org/fhir/filter-operator",
  "concept": [ {
    "code": "=",
    "display": "Equals",
    "definition": "The specified property of the code equals the provided value."
  }, {
    "code": "is-a",
    "display": "Is A (by subsumption)",
    "definition": "Includes all concept ids that have a transitive is-a relationship with the concept Id provided as the value, including the provided concept itself."
  }, {
    "code": "is-not-a",
    "display": "Not (Is A) (by subsumption)",
    "definition": "The specified property of the code does not have an is-a relationship with the provided value."
  }, {
    "code": "regex",
    "display": "Regular Expression",
    "definition": "The specified property of the code  matches the regex specified in the provided value."
  }, {
    "code": "in",
    "display": "In Set",
    "definition": "The specified property of the code is in the set of codes or concepts specified in the provided value (comma separated list)."
  }, {
    "code": "not-in",
    "display": "Not in Set",
    "definition": "The specified property of the code is not in the set of codes or concepts specified in the provided value (comma separated list)."
  } ],
  "caseSensitive": true,
  "version": "1.4.0",
  "contact": [ {
    "telecom": [ {
      "value": "http://hl7.org/fhir",
      "system": "other"
    }, {
      "value": "fhir@lists.hl7.org",
      "system": "email"
    } ]
  } ]
}