Multiple sclerosis or other white matter disorders

International Classification of Diseases for Mortality and Morbidity Statistics, 11th Revision, v2024-01

This is a group of conditions involving demyelination, damage to the myelin sheath which protects nerve axons and is responsible for neurotransmission.

sections/codes in this section (8A40-8A4Z)

• Multiple sclerosis  (8A40)
• Isolated demyelinating syndromes of the central nervous system  (8A41)
• Acute disseminated encephalomyelitis  (8A42)
• Neuromyelitis optica  (8A43)
• Leukodystrophies  (8A44)
• Secondary white matter disorders  (8A45)
• Central demyelination of corpus callosum  (8A46)
• Other specified multiple sclerosis or other white matter disorders  (8A4Y)
• Multiple sclerosis or other white matter disorders, unspecified  (8A4Z)

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