World Health Organization · 2026-01 · English
8A40.1 Primary progressive multiple sclerosis
Official WHO ICD-11 MMS tabulation. This international classification is separate from US ICD-10-CM. For complete instructions and postcoordination, consult the WHO browser.
Coding notes · WHO
This category is to be used to indicate Primary progressive multiple sclerosis which is progressive from onset but includes progressive - relapsing, or is progressive from onset with a single relapse
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