The World Health Organization (WHO) adopted the eleventh revision of the International Statistical Classification of Diseases and Related Health Problems (ICD-11) at its World Health Assembly meeting in May 2019. It addition to other major changes, ICD-11 includes a new classification for chronic pain as well as new groups of codes for chronic pain conditions. After a decade of preparation, ICD-11 will become effective in January 2022. The advance release allows countries to plan how to use the new version and train health professionals.
Given the delayed implementation of ICD-10, it is likely that ICD-11 implementation will be several years away. Of note, the National Committee on Vital and Health Statistics (NCVHS) sent a letter to the Health and Human Services secretary providing recommendations for simplifying the adoption of future versions of ICD. The recommendations were also noted in the NCVHSMarch 2019 report to Congress. Whether these recommendations will result in a streamlined adoption of ICD-11 is yet to be seen.