If you would like to:

• know more about us or need help using the NHS Data Model and Dictionary, see the Help pages
• view our Frequently Asked Questions, see Frequently Asked Questions.

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 Coordination Board (DCB) process. Changes are published as Information Standards Notices (ISN) and Data Dictionary Change Notices (DDCN).