http://hl7.org/fhir/permission-rule-combining|5.0.0

{
  "description" : "Codes identifying the rule combining. See XACML Combining algorithms  http://docs.oasis-open.org/xacml/3.0/xacml-3.0-core-spec-cos01-en.html",
  "compose" : null,
  "package" : "hl7.fhir.r5.core@5.0.0",
  "date" : "2022-08-04T23:01:24Z",
  "meta" : {
    "profile" : [ "http://hl7.org/fhir/StructureDefinition/shareablecodesystem" ],
    "lastUpdated" : "2023-03-26T15:21:02.749+11:00"
  },
  "publisher" : "HL7 (FHIR Project)",
  "jurisdiction" : [ {
    "coding" : [ {
      "code" : "001",
      "system" : "http://unstats.un.org/unsd/methods/m49/m49.htm",
      "display" : "World"
    } ]
  } ],
  "content" : "complete",
  "name" : "PermissionRuleCombining",
  "experimental" : false,
  "resourceType" : "CodeSystem",
  "title" : "Permission Rule Combining",
  "supliment" : null,
  "extension" : [ {
    "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-wg",
    "valueCode" : "sec"
  }, {
    "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status",
    "valueCode" : "trial-use"
  }, {
    "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm",
    "valueInteger" : 0
  } ],
  "status" : "active",
  "id" : "933af621-f585-5eff-97d0-8a2baac1f297",
  "url" : "http://hl7.org/fhir/permission-rule-combining",
  "identifier" : [ {
    "value" : "urn:oid:2.16.840.1.113883.4.642.4.2070",
    "system" : "urn:ietf:rfc:3986"
  } ],
  "concept" : [ {
    "code" : "deny-overrides",
    "display" : "Deny-overrides",
    "definition" : "The deny overrides combining algorithm is intended for those cases where a deny decision should have priority over a permit decision."
  }, {
    "code" : "permit-overrides",
    "display" : "Permit-overrides",
    "definition" : "The permit overrides combining algorithm is intended for those cases where a permit decision should have priority over a deny decision."
  }, {
    "code" : "ordered-deny-overrides",
    "display" : "Ordered-deny-overrides",
    "definition" : "The behavior of this algorithm is identical to that of the “Deny-overrides” rule-combining algorithm with one exception.  The order in which the collection of rules is evaluated SHALL match the order as listed in the permission."
  }, {
    "code" : "ordered-permit-overrides",
    "display" : "Ordered-permit-overrides",
    "definition" : "The behavior of this algorithm is identical to that of the “Permit-overrides” rule-combining algorithm with one exception.  The order in which the collection of rules is evaluated SHALL match the order as listed in the permission."
  }, {
    "code" : "deny-unless-permit",
    "display" : "Deny-unless-permit",
    "definition" : "The “Deny-unless-permit” combining algorithm is intended for those cases where a permit decision should have priority over a deny decision, and an “Indeterminate” or “NotApplicable” must never be the result. It is particularly useful at the top level in a policy structure to ensure that a PDP will always return a definite “Permit” or “Deny” result."
  }, {
    "code" : "permit-unless-deny",
    "display" : "Permit-unless-deny",
    "definition" : "The “Permit-unless-deny” combining algorithm is intended for those cases where a deny decision should have priority over a permit decision, and an “Indeterminate” or “NotApplicable” must never be the result. It is particularly useful at the top level in a policy structure to ensure that a PDP will always return a definite “Permit” or “Deny” result. This algorithm has the following behavior."
  } ],
  "caseSensitive" : true,
  "version" : "5.0.0",
  "contact" : [ {
    "telecom" : [ {
      "value" : "http://hl7.org/fhir",
      "system" : "url"
    }, {
      "value" : "fhir@lists.hl7.org",
      "system" : "email"
    } ]
  } ]
}