ICD-10 Code G37.8 – Other specified demyelinating diseases of central nervous system (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G37.8 – Other specified demyelinating diseases of central nervous system
What it is
G37.8 identifies demyelinating diseases of the central nervous system that do not fit a more specific ICD-10-CM category. Use it for documented CNS demyelination when the provider specifies another demyelinating disorder.
Clinical signs
Clinical features vary; refer to documentation. Demyelinating CNS disorders may present with neurologic deficits such as weakness, sensory change, visual disturbance, or coordination problems, depending on the condition described.
When to use this code
Use G37.8 when the record clearly states an “other specified” demyelinating disease of the central nervous system and no more specific code applies. It is appropriate when the provider names a demyelinating disorder that is not indexed elsewhere in ICD-10-CM. If the documentation is vague, check documentation before assigning this code.
Do not use for
Do not use this code for multiple sclerosis or other specifically indexed demyelinating diseases. Avoid it when the chart only says “demyelinating disease” without further specification.
Coding tip
Code the provider’s exact diagnosis wording and confirm that a more specific demyelinating code is not available.