The GSRN or Global Service Relationship Number is used to identify the recipient of a service. A GSRN enables a service provider to store data relevant to services provided to a recipient. For example, the GSRN can be used for patient identification enabling a hospital to store information about the medical treatment they have received.

GSRNs are fixed length 18 digit numbers composed of a GS1 Company Prefix, a Service Reference Number and a Check Digit. The GSRN is normally assigned by the service provider and may be bar coded using Application Identifier (8018).

The GSRN is constructed as follows:

GS1 Company Prefix >                     < Service ReferenceCheck


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