Skip to main content
Beta version A NHS service powered by standards. Feedbackopens in a new window will help us improve.

111 Referral Standard: Guidance For All Prsb Standards

2.2 Version Numbering

PRSB standards published with the detailed implementation guidance in the information model use a 3-segment version number, e.g., V3.01.02, while older standards published before the detailed implementation guidance was put into the information model retain the previous 2-segment version number, e.g., V2.02 until their next maintenance release or revision.

2-segment version numbers take the form of major version.minor version, e.g., V2.02 where the information model is major version 2 and minor version 01.

3-segment version numbers use the format Va.bb.cc where:

  • a - is the major version number of the information model, incremented on significant revisions or enhancement of the information model
  • bb – is the minor version number of the information model, incremented on minor updates such as changes or issue resolutions
  • cc – is the implementation guidance version number, incremented whenever the implementation guidance is updated, which can be with or independent from an information model update. At a major revision of the information model this will restart at version 01.

Page last updated: 06 January 2026