http://hl7.org/fhir/resource-aggregation-mode|4.0.1

{
  "description" : "How resource references can be aggregated.",
  "compose" : null,
  "package" : "hl7.fhir.r4.core@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" : "AggregationMode",
  "experimental" : false,
  "resourceType" : "CodeSystem",
  "title" : "AggregationMode",
  "supliment" : null,
  "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" : 2
  } ],
  "status" : "active",
  "id" : "57ee4e1a-cb33-56c8-8f75-15db553834e5",
  "valueSet" : "http://hl7.org/fhir/ValueSet/resource-aggregation-mode",
  "url" : "http://hl7.org/fhir/resource-aggregation-mode",
  "identifier" : [ {
    "value" : "urn:oid:2.16.840.1.113883.4.642.4.86",
    "system" : "urn:ietf:rfc:3986"
  } ],
  "concept" : [ {
    "code" : "contained",
    "display" : "Contained",
    "definition" : "The reference is a local reference to a contained resource."
  }, {
    "code" : "referenced",
    "concept" : [ {
      "code" : "bundled",
      "display" : "Bundled",
      "definition" : "The resource the reference points to will be found in the same bundle as the resource that includes the reference."
    } ],
    "display" : "Referenced",
    "definition" : "The reference to a resource that has to be resolved externally to the resource that includes the reference."
  } ],
  "caseSensitive" : true,
  "version" : "4.0.1",
  "contact" : [ {
    "telecom" : [ {
      "value" : "http://hl7.org/fhir",
      "system" : "url"
    }, {
      "value" : "fhir@lists.hl7.org",
      "system" : "email"
    } ]
  } ]
}