NHS Connecting for Health ceased to exist on 31st March 2013. This website is therefore not being updated. For up to date information about systems and services visit the Health and Social Care Information Centre website at www.hscic.gov.uk/systems

You are here: Home Services & Applications Data Standards NHS Classifications Service

NHS Classifications Service

The NHS Classification Service is the definitive source of clinical coding guidance and sets the national standards used by the NHS in coding clinical data.

Here you will find essential information on the classifications in use and how to use them effectively.

About the NHS Classifications Service

More than just classifications advice, learn how else we support the NHS.

National Classifications standards and audit

Using OPCS-4 and ICD-10 classifications for optimal data quality. Includes registered auditors list.

National Classifications helpdesk and advice

Find advice on clinical coding and the helpdesk, plus answers to questions and top tips.

National Coding training and accreditation

Support for coders needing approved trainers, courses and careers advice.

Coding for non-coders

Help for clinicians and other data users to understand clinical coding and its purpose.

Suppliers and licensing

Implementing classifications and upgrading systems? Find the help and downloads you need.