World Health Organization · 2026-01 · English
Multiple sclerosis or other white matter disorders
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.
More specific codes
8A40Multiple sclerosis8A41Isolated demyelinating syndromes of the central nervous system8A42Acute disseminated encephalomyelitis8A43Neuromyelitis optica8A44Leukodystrophies8A45Secondary white matter disorders8A46Central demyelination of corpus callosum8A4YOther specified multiple sclerosis or other white matter disorders8A4ZMultiple sclerosis or other white matter disorders, unspecified© World Health Organization · CC BY-ND 3.0 IGO