{
  "resourceType": "StructureDefinition",
  "url": "https://anagrafe.ssr.toscana.it/fhir/StructureDefinition/extension-attachment-relatedTo",
  "name": "Extension_attachment_relatedTo",
  "title": "extension-attachment-relatedTo",
  "status": "active",
  "experimental": false,
  "description": "This extension allow to logically connect an attachment to a related observation or specimen.",
  "fhirVersion": "4.0.1",
  "kind": "complex-type",
  "abstract": false,
  "context": [
    {
      "type": "element",
      "expression": "ServiceRequest"
    }
  ],
  "type": "Extension",
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Extension",
  "derivation": "constraint",
  "differential": {
    "element": [
      {
        "id": "Extension.url",
        "path": "Extension.url",
        "fixedUri": "https://anagrafe.ssr.toscana.it/fhir/StructureDefinition/extension-attachment-relatedTo"
      },
      {
        "id": "Extension.value[x]",
        "path": "Extension.value[x]",
        "type": [
          {
            "code": "Reference",
            "targetProfile": [
              "http://hl7.org/fhir/StructureDefinition/Observation",
              "http://hl7.org/fhir/StructureDefinition/Specimen"
            ]
          }
        ]
      }
    ]
  }
}