{

"resourceType": "CodeSystem",
"id": "map-target-list-mode",
"meta": {
  "lastUpdated": "2019-11-01T09:29:23.356+11:00"
},
"extension": [
  {
    "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-wg",
    "valueCode": "fhir"
  },
  {
    "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status",
    "valueCode": "trial-use"
  },
  {
    "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm",
    "valueInteger": 2
  }
],
"url": "http://hl7.org/fhir/map-target-list-mode",
"identifier": [
  {
    "system": "urn:ietf:rfc:3986",
    "value": "urn:oid:2.16.840.1.113883.4.642.4.686"
  }
],
"version": "4.0.1",
"name": "StructureMapTargetListMode",
"title": "StructureMapTargetListMode",
"status": "draft",
"experimental": false,
"date": "2019-11-01T09:29:23+11:00",
"publisher": "HL7 (FHIR Project)",
"contact": [
  {
    "telecom": [
      {
        "system": "url",
        "value": "http://hl7.org/fhir"
      },
      {
        "system": "email",
        "value": "fhir@lists.hl7.org"
      }
    ]
  }
],
"description": "If field is a list, how to manage the production.",
"caseSensitive": true,
"valueSet": "http://hl7.org/fhir/ValueSet/map-target-list-mode",
"content": "complete",
"concept": [
  {
    "code": "first",
    "display": "First",
    "definition": "when the target list is being assembled, the items for this rule go first. If more than one rule defines a first item (for a given instance of mapping) then this is an error."
  },
  {
    "code": "share",
    "display": "Share",
    "definition": "the target instance is shared with the target instances generated by another rule (up to the first common n items, then create new ones)."
  },
  {
    "code": "last",
    "display": "Last",
    "definition": "when the target list is being assembled, the items for this rule go last. If more than one rule defines a last item (for a given instance of mapping) then this is an error."
  },
  {
    "code": "collate",
    "display": "Collate",
    "definition": "re-use the first item in the list, and keep adding content to it."
  }
]

}