Electronic books and web based applications are becoming the preferred option for the publication of clinical classifications worldwide.

NHS Digital  provides electronic versions of ICD-10 and OPCS-4. They replicate the 'look and feel' of the printed copies of the classifications.

The eVersion:

  • reproduces the familiar ICD-10 and OPCS-4 book format
  • has powerful search, navigation and retrieval functions
  • supports the addition of notes to codes. These notes can be transferred between eVersions of the classifications. This saves time on manual transcription of notes.
  • eVersion users can share their notes via the export and import functions
  • enables coders to email directly from the eVersion
  • supports hyperlinks to documents and websites
  • contains the National Clinical Coding Standards OPCS-4 and ICD-10 reference books

The eViewer (eVersion) application, along with the ICD-10 and OPCS-4 e-Version books and the Reference books for use in the eViewer are available to download via the Technology Reference Data Update Distribution (TRUD) site.

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ICD-10 5th Edition eVersion Errata changes

There are a number of issues and discrepancies in the printed ICD-10 5th Edition volumes published by the World Health Organization (WHO) that were notified in the Coding Clinic Ref 115: NHS ICD-10 5th Edition Errata. A number of these errors are replicated in the ICD-10 5th Edition eVersion. The eVersion is developed by NHS Digital using data supplied by WHO. For users of the eVersion we have produced a set of shared notes replicating the errata entries which can be imported into the eVersion. The corrections added to Ref 115 in April 2018 are included in the notes. 

The notes are produced in XML format and are downloadable here (TEX, 40.8kB).

Save the xml file to your computer and then import it (do not open file) by following the instructions in the User Guide: Section 20 How to import a note. The User Guide is accessed via the eViewer Help menu/ Help Contents.

To check the notes after import, see User Guide: Section 19 How can I read my notes in a single document. Please use the HTML option. You can also insert type:note in the "search field" to see all the notes in your eVersion. However, this may provide nil results unless you have an existing note in your eVersion. This issue is linked to known issues described in sections 6.2 and 6.3 of the eVersion Release note document.

The new errata notes may conflict with your existing notes as described at subsection 20.2 of the User Guide. Merger of the conflicting notes may cause loss of formatting involving spacing, bullet points, indents and the red background to indicate text to be deleted. Unfortunately, this bug was not detected during software testing. Where the review screen identifies a conflict, please change the note manually using the Errata list in the Coding Clinic.

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Classifications Online

We are currently developing an online version of OPCS-4 which will replicate the functionality of the NHS Digital Classifications eVersion. An online version will bring a number of benefits including the ability to access OPCS-4 using an internet browser from any computer without the need to register to TRUD, download and install eVersion software and data packs.

We would like a maximum of 20 users of the classification to join a user group to take part in user testing to understand its feasibility and inform potential enhancements. The initial testing will start at the end of August for four weeks. The formal testing should require no more than half a day of your time and you can so this at any time during the testing period. You will be able to use the online version in your day to day work throughout the testing period.

Testers will need a computer with internet access and Google Chrome or Microsoft Edge Browsers.

If you would like to be involved in the user group, please submit your details by Friday, 3rd August 2018. If you have any questions before deciding whether to volunteer, please contact

As we require a maximum of 20 volunteers, we will send invited on a "first come first serve" basis. If we are unable to invite you to the group, due to 20 people having already volunteered, we will let you know.

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Last modified by Katy Park 7 months ago