Definition for Code SystemFilterOperator

{
  "resourceType" : "CodeSystem",
  "id" : "filter-operator",
  "meta" : {
    "lastUpdated" : "2022-09-07T11:58:29.429+11:00",
    "profile" : ["http://hl7.org/fhir/StructureDefinition/shareablecodesystem"]
  },
  "text" : {
    "status" : "extensions",
    "div" : "<div>!-- Snipped for Brevity --></div>"
  },
  "extension" : [{
    "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-wg",
    "valueCode" : "vocab"
  },
  {
    "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status",
    "valueCode" : "normative"
  },
  {
    "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-normative-version",
    "valueCode" : "4.0.0"
  },
  {
    "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm",
    "valueInteger" : 5
  }],
  "url" : "http://hl7.org/fhir/filter-operator",
  "identifier" : [{
    "system" : "urn:ietf:rfc:3986",
    "value" : "urn:oid:2.16.840.1.113883.4.642.4.479"
  }],
  "version" : "5.0.0-ballot",
  "name" : "FilterOperator",
  "title" : "FilterOperator",
  "status" : "active",
  "experimental" : false,
  "date" : "2021-01-05T10:01:24+11:00",
  "publisher" : "HL7 (FHIR Project)",
  "contact" : [{
    "telecom" : [{
      "system" : "url",
      "value" : "http://hl7.org/fhir"
    },
    {
      "system" : "email",
      "value" : "fhir@lists.hl7.org"
    }]
  }],
  "description" : "The kind of operation to perform as a part of a property based filter.",
  "caseSensitive" : true,
  "valueSet" : "http://hl7.org/fhir/ValueSet/filter-operator",
  "content" : "complete",
  "concept" : [{
    "code" : "=",
    "display" : "Equals",
    "definition" : "The specified property of the code equals the provided value."
  },
  {
    "extension" : [{
      "url" : "http://hl7.org/fhir/StructureDefinition/codesystem-concept-comments",
      "valueString" : "The definition of is-a is that all the properties of the value are true for the specified property of the code, which means that a code has an is-a relationship with itself. To exclude the root code, use descendent-of"
    }],
    "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 (include descendant codes and self)."
  },
  {
    "extension" : [{
      "url" : "http://hl7.org/fhir/StructureDefinition/codesystem-concept-comments",
      "valueString" : "The definition of is-a is that all the properties of the value are true for the specified property of the code. \n\nSpelling note: \"descendant\" is a more correct spelling, but the spelling \"descendent\" is maintained in the code for backwards compatibility reasons"
    }],
    "code" : "descendent-of",
    "display" : "Descendent Of (by subsumption)",
    "definition" : "Includes all concept ids that have a transitive is-a relationship with the concept Id provided as the value, excluding the provided concept itself i.e. include descendant codes only)."
  },
  {
    "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)."
  },
  {
    "extension" : [{
      "url" : "http://hl7.org/fhir/StructureDefinition/codesystem-concept-comments",
      "valueString" : "The definition of is-a is that all the properties of the value are true for the specified property of the code, which means that a code has an is-a relationship with itself. To exclude the root code, add it explicitly to as an exclude"
    }],
    "code" : "generalizes",
    "display" : "Generalizes (by Subsumption)",
    "definition" : "Includes all concept ids that have a transitive is-a relationship from the concept Id provided as the value, including the provided concept itself (i.e. include ancestor codes and self)."
  },
  {
    "code" : "child-of",
    "display" : "Child Of",
    "definition" : "Only concepts with a direct hierarchical relationship to the index code and no other concepts. This does not include the index code in the output."
  },
  {
    "code" : "descendent-leaf",
    "display" : "Descendent Leaf",
    "definition" : "Includes concept ids that have a transitive is-a relationship with the concept Id provided as the value, but which do not have any concept ids with transitive is-a relationships with themselves."
  },
  {
    "code" : "exists",
    "display" : "Exists",
    "definition" : "The specified property of the code has at least one value (if the specified value is true; if the specified value is false, then matches when the specified property of the code has no values)."
  }]
}