ICD-11 Timescales

In May 2019, the World Health Assembly adopted the eleventh revision of the International Statistical Classification of Diseases and Related Health Problems (ICD-11), to come into effect on 1 January 2022, subject to transitional arrangements.  The UK is a Member State of the World Health Organization and in our role as a WHO Collaborating Centre, NHS Digital took part in ICD-11 Field Trials during 2017 and 2018. ICD reporting fulfils the UK obligation to submit ICD codes for international comparison.

The WHO has provided transitional arrangements from 1 January 2022 for at least five years. The UK, like many other countries, has a very diverse national ecosystem of clinical information standards and national information flows.  Because of this the implementation roadmap for ICD-11 for morbidity coding has yet to be developed and is subject to Department of Health and Social Care agreement and commission to do so.

When the ICD-11 implementation roadmap is agreed, development will be managed by NHS Digital who will seek approval to publish through the Data Alliance Partnership Board as a new information standard.  This will include implementation requirements and timescales to allow NHS organisations and system suppliers time to implement the requirements of the specific collections.  Devolved administrations would determine their own implementation timeframe.

In the meantime ICD-10 remains a mandatory information standard – as detailed in the NHS Data Dictionary.  NHS organisations and system suppliers must continue to follow the current information standard ICD-10.

Further details from WHO can be found below:

Our ICD-11 Overview

Our ICD-11 overview gives further information about:

  • Why ICD-11 is being produced and its benefits
  • The revision process
  • Main structural changes between ICD-10 and ICD-11
  • ICD-11 electronic tools
  • Field trials and how the classification is being tested and trialled. 

The two electronic tools WHO have developed to access ICD-11 are the ICD-11 Coding Tool and Browser. The Coding Tool, Browser and user guides can be accessed using the links in the table:

ICD-11 Coding Tool Coding Tool user guide
ICD-11 Browser Browser user guide

ICD-11 Chapter Reviews

NHS Digital hosts the UK WHO-FIC Collaborating Centre and as part of our role we contribute to the evaluation of ICD-11 for morbidity coding. During 2020 and 2021 we offered clinicians and other users of the classification an opportunity to review chapter content and provide feedback to us. The Chapter reviews have now closed.

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