{
  "resourceType": "CodeSystem",
  "id": "reference-handling-policy",
  "meta": {
    "lastUpdated": "2018-12-27T22:37:54.724+11:00"
  },
  "extension": [
    {
      "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-wg",
      "valueCode": "fhir"
    },
    {
      "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/reference-handling-policy",
  "identifier": [
    {
      "system": "urn:ietf:rfc:3986",
      "value": "urn:oid:2.16.840.1.113883.4.642.1.203"
    }
  ],
  "version": "4.0.0",
  "name": "ReferenceHandlingPolicy",
  "title": "ReferenceHandlingPolicy",
  "status": "active",
  "experimental": false,
  "date": "2018-12-27T22:37:54+11:00",
  "publisher": "HL7 (FHIR Project)",
  "contact": [
    {
      "telecom": [
        {
          "system": "url",
          "value": "http://hl7.org/fhir"
        },
        {
          "system": "email",
          "value": "fhir@lists.hl7.org"
        }
      ]
    }
  ],
  "description": "A set of flags that defines how references are supported.",
  "caseSensitive": true,
  "valueSet": "http://hl7.org/fhir/ValueSet/reference-handling-policy",
  "content": "complete",
  "concept": [
    {
      "code": "literal",
      "display": "Literal References",
      "definition": "The server supports and populates Literal references (i.e. using Reference.reference) where they are known (this code does not guarantee that all references are literal; see 'enforced')."
    },
    {
      "code": "logical",
      "display": "Logical References",
      "definition": "The server allows logical references (i.e. using Reference.identifier)."
    },
    {
      "code": "resolves",
      "display": "Resolves References",
      "definition": "The server will attempt to resolve logical references to literal references - i.e. converting Reference.identifier to Reference.reference (if resolution fails, the server may still accept resources; see logical)."
    },
    {
      "code": "enforced",
      "display": "Reference Integrity Enforced",
      "definition": "The server enforces that references have integrity - e.g. it ensures that references can always be resolved. This is typically the case for clinical record systems, but often not the case for middleware/proxy systems."
    },
    {
      "code": "local",
      "display": "Local References Only",
      "definition": "The server does not support references that point to other servers."
    }
  ]
}