International Classification of Diseases, Eleventh Revision (ICD 11)

Why it matters

ICD is the basis of the mortality and morbidity statistics a ministry reports nationally and to WHO. ICD 11 is the revision WHO now maintains, so every new clinical system should be able to code in it, even where national reporting still uses ICD 10.

Key points

• The 72nd World Health Assembly adopted ICD 11 in May 2019, and it came into effect on 1 January 2022 [1][2].
• WHO's 2022 release describes around 17,000 unique codes and more than 120,000 codable terms, and describes ICD 11 as entirely digital [3].
• WHO provides a coding tool, a multilingual API, offline functionality and the option to deploy the ICD API locally [3].
• WHO provides free access to ICD 11, subject to its licence, and states that it can be used without any additional terminology [2].
• Mapping tables support comparison with ICD 10 data but are not a substitute for full implementation [2].

In Moana

Moana supports ICD 11 alongside ICD 10, so a ministry can set the revision used for reporting and change it when its transition plan allows.

Sources

1. The 72nd World Health Assembly resolution for ICD 11 adoption, World Health Organization, 2019
2. ICD 11 implementation, frequently asked questions, World Health Organization, accessed 2026
3. ICD 11 2022 release, World Health Organization, 2022