DICOM PS3.3 2019a - Information Object Definitions

10.14 HL7v2 Hierarchic Designator Macro

Table 10-17 describes the Attributes for identifying an entity (system, organization, agency, or department) that has responsibility for managing or assigning a defined set of instance identifiers (such as placer or filler number, Patient identifiers, provider identifiers, etc.). This entity could be a particular health care application such as a registration system that assigns Patient identifiers, a governmental entity such as a licensing authority that assigns professional identifiers or drivers' license numbers, or a facility where such identifiers are assigned.

Note

This definition is identical to HL7 v2.5, Section 2.A.33, with only minor changes for editorial style.

These Attributes are equivalent to the components of the HL7 v2 Hierarchic Designator (HD) and Entity Identifier (EI) data types (see HL7 v2 Chapter 2.A).

If both Local Namespace Entity ID (0040,0031) and Universal Entity ID (0040,0032) are present, they shall refer to the same entity.

Table 10-17. HL7v2 Hierarchic Designator Macro Attributes

Attribute Name

Tag

Type

Attribute Description

Local Namespace Entity ID

(0040,0031)

1C

Identifies an entity within the local namespace or domain. Required if Universal Entity ID (0040,0032) is not present; may be present otherwise.

Universal Entity ID

(0040,0032)

1C

Universal or unique identifier for an entity. Required if Local Namespace Entity ID (0040,0031) is not present; may be present otherwise.

Universal Entity ID Type

(0040,0033)

1C

Standard defining the format of the Universal Entity ID. Required if Universal Entity ID (0040,0032) is present.

Enumerated Values:

DNS

An Internet dotted name. Either in ASCII or as integers

EUI64

An IEEE Extended Unique Identifier

ISO

An International Standards Organization Object Identifier

URI

Uniform Resource Identifier

UUID

The DCE Universal Unique Identifier

X400

An X.400 MHS identifier

X500

An X.500 directory name


DICOM PS3.3 2019a - Information Object Definitions