An identifier of the type of data used for the purposes of Automatic Identification and Data Capture using GS1 standards.

National Codes:

91	Hospital Identifiers. Identifies that the data immediately following the Application Identifier relates to local hospital identifiers, typically ORGANISATION CODE (CODE OF PROVIDER), PATIENT hospital/Patient Administration System (PAS) number and the NHS Trust GS1 Unique Organisation Prefix.
92	Baby Details. Identifies that the data immediately following the Application Identifier relates to baby details, typically NUMBER OF BABIES IDENTIFIER (PATIENT IDENTIFICATION), PERSON FAMILY NAME (MOTHER OF BABY) and PERSON GIVEN NAME (MOTHER OF BABY).
93	Patient Descriptive Data. Identifies that the data immediately following the Application Identifier relates to PATIENT descriptive data, typically PERSON FAMILY NAME, PERSON GIVEN NAME, DATE OF BIRTH (PATIENT IDENTIFICATION) and TIME OF BIRTH (PATIENT IDENTIFICATION).

Notes:
National codes 94-97 have been reserved for national use only, and are not to be allocated by the NHS locally. National codes 98 and 99 can be allocated by the NHS for local use. 

This attribute is also known by these names:

Context	Alias
plural	APPLICATION IDENTIFIERS GS1