Namingsystem-operation-preferred-id

Release 4

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4.11.10.1 Operation $preferred-id on NamingSystem

FHIR Infrastructure

Work Group

Maturity Level: 1

Trial Use

Compartments: N/A

This operation returns the preferred identifiers for identifiers, and terminologies. The operation takes 2 parameters:

a system identifier - either a URI, an OID, or a v2 table 0396 (other) code
a code for what kind of identifier is desired (URI, OID, v2 table 0396 identifier)

and returns either the requested identifier, or an HTTP errors response with an OperationOutcome because either the provided identifier was not recognized, or the requested identiifer type is not known.

The principle use of this operation is when converting between v2, CDA and FHIR Identifier/CX/II and CodeableConcepts/C(N/W)E/CD but the operation may also find use when converting metadata such as profiles.

The official URL for this operation definition is

 http://hl7.org/fhir/OperationDefinition/NamingSystem-preferred-id

Formal Definition (as a OperationDefinition).

URL: [base]/NamingSystem/$preferred-id

This is an idempotent operation

In Parameters:

Имя

Кардинальное множество

Тип

Привязка

Профиль

Документация

id

1..1

string

The server parses the provided id to see what type it is (mary a URI, an OID as a URI, a plain OID, or a v2 table 0396 code). If the server can't tell what type of identifier it is, it can try it as multiple types. It is an error if more than one system matches the provided identifier

type

1..1

code

NamingSystemIdentifierType (Required)

Out Parameters:

Имя

Кардинальное множество

Тип

Привязка

Профиль

Документация

result

1..1

string

OIDs are return as plain OIDs (not the URI form).

Servers handle this request by finding the provided identifier in their known naming systems, and returning the requested identifier type (NamingSystem.uniqueId.type). If there are multiple possible identifiers of the specified type (e.g. multiple OIDs) the server returns an error.

If the server wishes, it can also look through all code systems and value sets it knows about when attempting to find the requested identifier

4.11.10.1.1 Examples

Request: Using GET

GET [base]/NamingSystem/$preferred-id?id=http://ns.electronichealth.net.au/id/hi/ihi/1.0&type=oid

Request: Using POST

POST [base]/NamingSystem/$preferred-id
[other headers]

{
  "resourceType" : "Parameters",
  "parameter" : [ {
     "name" : "id",
     "valueString" : "http://ns.electronichealth.net.au/id/hi/ihi/1.0"
   }, {
     "name" : "type",
     "valueCode" : "oid"
   }
  ]
}

Response:

HTTP/1.1 200 OK
[other headers]

{
  "resourceType" : "Parameters",
  "parameter" : [ {
     "name" : "result",
     "valueString" : "1.2.36.1.2001.1003.0"
   }
  ]
}

For more information about operations, including how they are invoked, see Operations.