Difference between revisions of "Instance Identifier (II)"
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{{ConstraintBox|dtr1-10-II: @root MUST be a syntactically correct OID or UUID}} | {{ConstraintBox|dtr1-10-II: @root MUST be a syntactically correct OID or UUID}} | ||
| − | {{ | + | {{OIBox|DICOM has a max of 64 chars in an OID, Canada uses 200 chars for OIDs.}} |
Revision as of 15:32, 23 July 2013
Instance Identifier (II)
This data type identifies instances of classes like observations or entities (persons, or-ganizations). Attributes are
| Attribute | DT | Conf | Description |
|---|---|---|---|
| @extension | st | O | Identification |
| @root | uid | R | Source of identification |
<id extension="13234453645" root="2.16.840.1.113883.2.6.15.3.427.1"/>
The @root attribute is of type OID (object identifier), a unique identifier of the issuing authority or system.
| Example |
|
For example, a patient with a patient number 13234453645 created by a specific healthcare provider organization is uniquely identified by the number itself in |
In some cases a single OID identifies an object uniquely. In that situation, only @root is populated and @extension is omitted.
 |  dtr1-1-II: @root is required if @nullFlavor is not present |
| dtr1-2-II: @root may not be used if @nullFlavor is present |
| dtr1-3-II: (deprecated) @extension may not be used if @nullFlavor is present. |
| dtr1-4-II: @identifierName may not be used if @nullFlavor is present |
| dtr1-5-II: @displayable may not be used if @nullFlavor is present |
| dtr1-6-II: @reliability may not be used if @nullFlavor is present |
| dtr1-7-II: @assigningAuthorityName may not be used if @nullFlavor is present |
| dtr1-8-II: @root should not be longer than 128 characters. Please write a note to the authors of this rule if this is found to be not sufficient |
| dtr1-9-II: @extension should not be longer than 64 characters. Please write a note to the authors of this rule if this is found to be not sufficient |
| dtr1-10-II: @root MUST be a syntactically correct OID or UUID |
 | DICOM has a max of 64 chars in an OID, Canada uses 200 chars for OIDs. |
