{
  "resourceType" : "OperationDefinition",
  "id" : "GetPseudonym",
  "text" : {
    "status" : "generated",
    "div" : "<div xmlns=\"http://www.w3.org/1999/xhtml\"><p class=\"res-header-id\"><b>Generated Narrative: OperationDefinition GetPseudonym</b></p><a name=\"GetPseudonym\"> </a><a name=\"hcGetPseudonym\"> </a><p>URL: [base]/$get-pseudonym</p><h3>Parameters</h3><table class=\"grid\"><tr><td><b>Use</b></td><td><b>Name</b></td><td><b>Scope</b></td><td><b>Cardinality</b></td><td><b>Type</b></td><td><b>Binding</b></td><td><b>Documentation</b></td></tr><tr><td>IN</td><td>target</td><td/><td>1..1</td><td><a href=\"http://hl7.org/fhir/R4/datatypes.html#string\">string</a> | <a href=\"http://hl7.org/fhir/R4/datatypes.html#Identifier\">Identifier</a></td><td/><td><div><p>Specification of the pseudonymisation context on the basis of which a personal pseudonym is generated or (if available) searched for the specified original identifiers. Requires a single-pseudonym-domain.</p>\n</div></td></tr><tr><td>IN</td><td>original</td><td/><td>1..1</td><td><a href=\"http://hl7.org/fhir/R4/datatypes.html#string\">string</a> | <a href=\"http://hl7.org/fhir/R4/datatypes.html#Identifier\">Identifier</a></td><td/><td><div><p>Specification of the original identifier to be pseudonymised</p>\n</div></td></tr><tr><td>OUT</td><td>target</td><td/><td>0..1</td><td><a href=\"http://hl7.org/fhir/R4/datatypes.html#Element\">Element</a></td><td/><td><div><p>Pseudonymisation context (identical with Request)</p>\n</div></td></tr><tr><td>OUT</td><td>original</td><td/><td>0..1</td><td><a href=\"http://hl7.org/fhir/R4/datatypes.html#Element\">Element</a></td><td/><td><div><p>Original-identifier (identical with Request)</p>\n</div></td></tr><tr><td>OUT</td><td>pseudonym</td><td/><td>1..1</td><td><a href=\"http://hl7.org/fhir/R4/datatypes.html#Element\">Element</a></td><td/><td><div><p>Personal pseudonym.</p>\n</div></td></tr></table></div>"
  },
  "url" : "https://www.medizininformatik-initiative.de/fhir/ext/mii-interface-module-pseudonymization/OperationDefinition/GetPseudonym",
  "version" : "2026.0.0-ballot.1",
  "name" : "Get-Pseudonym",
  "title" : "get-pseudonym",
  "status" : "active",
  "kind" : "operation",
  "experimental" : false,
  "date" : "2026-05-21T12:46:16+00:00",
  "publisher" : "Medizininformatik Initiative",
  "contact" : [{
    "name" : "Medizininformatik Initiative",
    "telecom" : [{
      "system" : "url",
      "value" : "https://www.medizininformatik-iniitative.de"
    }]
  }],
  "description" : "Searches an existing single pseudonym for the given single original value (ready only). For use in single-pseudonym-domains only. The pseudonymization algorithm to be used is left to the implementers of the operation. Errors during the execution of the operation must be returned as OperationOutcome.",
  "affectsState" : true,
  "code" : "get-pseudonym",
  "system" : true,
  "type" : false,
  "instance" : false,
  "parameter" : [{
    "extension" : [{
      "url" : "http://hl7.org/fhir/StructureDefinition/operationdefinition-allowed-type",
      "valueUri" : "string"
    },
    {
      "url" : "http://hl7.org/fhir/StructureDefinition/operationdefinition-allowed-type",
      "valueUri" : "Identifier"
    }],
    "name" : "target",
    "use" : "in",
    "min" : 1,
    "max" : "1",
    "documentation" : "Specification of the pseudonymisation context on the basis of which a personal pseudonym is generated or (if available) searched for the specified original identifiers. Requires a single-pseudonym-domain.",
    "type" : "Element"
  },
  {
    "extension" : [{
      "url" : "http://hl7.org/fhir/StructureDefinition/operationdefinition-allowed-type",
      "valueUri" : "string"
    },
    {
      "url" : "http://hl7.org/fhir/StructureDefinition/operationdefinition-allowed-type",
      "valueUri" : "Identifier"
    }],
    "name" : "original",
    "use" : "in",
    "min" : 1,
    "max" : "1",
    "documentation" : "Specification of the original identifier to be pseudonymised",
    "type" : "Element"
  },
  {
    "name" : "target",
    "use" : "out",
    "min" : 0,
    "max" : "1",
    "documentation" : "Pseudonymisation context (identical with Request)",
    "type" : "Element"
  },
  {
    "name" : "original",
    "use" : "out",
    "min" : 0,
    "max" : "1",
    "documentation" : "Original-identifier (identical with Request)",
    "type" : "Element"
  },
  {
    "name" : "pseudonym",
    "use" : "out",
    "min" : 1,
    "max" : "1",
    "documentation" : "Personal pseudonym.",
    "type" : "Element"
  }]
}