The NHS Data Model and Dictionary provides a reference point for approved Information Standards Notices to support health care activities within the NHS in England. It has been developed for everyone who is actively involved in the collection of data and the management of information in the NHS.

The NHS Data Model and Dictionary is maintained and published by the NHS Data Model and Dictionary Service and all changes are governed by the Data Alliance Partnership Board (DAPB) process. Changes are published as Information Standards Notices (ISN) and Data Dictionary Change Notices (DDCN).