ICD-10 Code G37.89 – Other specified demyelinating diseases of central nervous system (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G37.89 – Other specified demyelinating diseases of central nervous system
What it is
This code identifies a demyelinating disorder of the central nervous system that does not fit a more specific ICD-10 category. Use it when the record names a distinct demyelinating condition but not multiple sclerosis or another listed diagnosis.
Clinical signs
Clinical features vary; refer to documentation. Common findings in demyelinating disease may include focal neurologic deficits, sensory changes, weakness, gait disturbance, or vision symptoms, depending on the affected CNS area.
When to use this code
Use G37.89 when the clinician documents an “other specified” demyelinating disorder of the brain or spinal cord and no more specific code applies. It also fits when the diagnosis is confirmed, but the chart does not support a named demyelinating condition. If documentation is vague, check documentation before assigning this code.
Do not use for
Do not use this code for multiple sclerosis, acute disseminated demyelination, or other demyelinating diseases that have their own ICD-10 code. Do not use it when the record only says “demyelinating disease” without further specification.
Coding tip
Match the code to the exact documented diagnosis; if the provider does not specify the demyelinating disorder, query for clarification.