NHS Classifications OPCS-4
NHS England publishes and maintains the NHS information standards ICD and OPCS-4 on behalf of the UK. It also produces other products to support the use of these clinical classifications and derivative products.
The NHS England Terminology and Classifications Delivery Service sets the national clinical coding standards for these classifications in England. It is the definitive source for standards and guidance.
OPCS-4 is an NHS approved and mandated information standard:
DAPB0084: OPCS Classification of Interventions and Procedures
Read more about the OPCS-4 classification on Delen.
Email questions or feedback to information.standards@nhs.net.
Legally restricted patient confidential reference data has moved to the SNOMED CT derivative products category.
Items in this category Jump to summaries
Global Trade Item Number to OPCS-4 code cross reference file
News for this category
Draft changes from OPCS-4.10 to OPCS-4.11 open for feedback
The next update to the OPCS-4 Classification of Interventions and Procedures – version 4.11 – will be implemented across the NHS on 1 April 2026.
OPCS-4 is an information standard published under the Health and Social Care Act 2012. It is updated every 3 years to reflect current NHS clinical practice. The classification supports aggregate data for statistics and reimbursement.
The Terminology and Classifications Service at NHS England has produced a draft summary of the core changes between OPCS-4.10 and OPCS-4.11. Users of the classification are invited to review the changes and submit feedback.
The draft summary of core changes and the feedback form are available on the OPCS-4.10 to OPCS-4.11 feedback page on Delen, the Terminology and Classifications Service's collaboration workspace.
If the changes are approved by the Data Alliance Partnership Board (find out more about the governance of information standards), the OPCS-4.11 Information Standard Notice will be published in November 2025. This is to prepare for implementation in the NHS from 1 April 2026.
More information about OPCS-4 and provisional release dates for OPCS-4.11 products is available on the OPCS-4 page on Delen.
Please submit feedback by 1 August 2025.
Item summaries
Global Trade Item Number to OPCS-4 code cross reference file
The Global Trade Item Number (GTIN) to OPCS-4 code cross reference file has a GTIN for every OPCS-4 code.
Releases of this item contain the data file and guidance on the creation and management of GTINs for OPCS-4.
OPCS-4 data files
The files are designed for NHS information departments and NHS system suppliers to upload into patient administration systems, and to help data analysts with the comparison of data collected using the current and previous versions of OPCS-4.
The files are neither designed nor intended for training purposes.