Instance Identifier (II)
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.
{{ConstraintBox|dtr1-4-II: @identifierName may not be used if @nullFlavor is present {{ConstraintBox|dtr1-5-II: @displayable may not be used if @nullFlavor is present {{ConstraintBox|dtr1-6-II: @reliability may not be used if @nullFlavor is present {{ConstraintBox|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 |