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UK Terminology Centre

The UK Terminology Centre (UKTC) is responsible for the UK management of SNOMED CT, Read codes and other healthcare terminology products and Clinical Classifications. The UKTC maintains the NHS Dictionary of Medicines and Devices (dm+d) in partnership with the NHS Business Service Authority.


Clinical terms for use by Secondary, Primary, Health and Social care.

Read Codes

Clinical terms by which clinicians record patient findings and procedures in IT systems.

dictionary of medicines+devices

Unique identifiers and associated textual descriptions for medicines and medical devices.

National standard representation of clinical imaging procedures

Find out more about the National Interim Clinical Imaging Procedure code set.