{
  "resourceType": "StructureDefinition",
  "url": "https://www.medizininformatik-initiative.de/fhir/core/StructureDefinition/MII-Reference",
  "version": "1.0",
  "name": "MII-Reference",
  "status": "retired",
  "description": "Einheitliche Vorgabe zur Verwendung von Logical References",
  "fhirVersion": "4.0.1",
  "mapping": [
    {
      "identity": "rim",
      "uri": "http://hl7.org/v3",
      "name": "RIM Mapping"
    }
  ],
  "kind": "complex-type",
  "abstract": false,
  "type": "Reference",
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Reference",
  "derivation": "constraint",
  "differential": {
    "element": [
      {
        "id": "Reference",
        "path": "Reference",
        "constraint": [
          {
            "key": "mii-reference-1",
            "severity": "error",
            "human": "Either reference.reference OR reference.identifier exists",
            "expression": "($this.reference.exists() or ($this.identifier.value.exists() and $this.identifier.system.exists())) xor $this.extension('http://hl7.org/fhir/StructureDefinition/data-absent-reason').exists()",
            "source": "https://www.medizininformatik-initiative.de/fhir/core/StructureDefinition/MII-Reference"
          }
        ]
      },
      {
        "id": "Reference.reference",
        "path": "Reference.reference",
        "mustSupport": true
      },
      {
        "id": "Reference.identifier",
        "path": "Reference.identifier",
        "mustSupport": true
      },
      {
        "id": "Reference.identifier.system",
        "path": "Reference.identifier.system",
        "min": 1,
        "mustSupport": true
      },
      {
        "id": "Reference.identifier.value",
        "path": "Reference.identifier.value",
        "min": 1,
        "mustSupport": true
      }
    ]
  }
}