ICD-10 Code G37.0 – Diffuse sclerosis of central nervous system (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G37.0 – Diffuse sclerosis of central nervous system
What it is
G37.0 identifies diffuse sclerosis of the central nervous system, a rare demyelinating disorder affecting brain and spinal cord tissue. Use it when the record specifically documents this diagnosis.
Clinical signs
Clinical features vary; refer to documentation. Standard references describe progressive neurologic dysfunction with signs of white matter involvement, such as weakness, coordination problems, or cognitive changes.
When to use this code
Use G37.0 when the provider clearly states diffuse sclerosis of the central nervous system in the assessment, problem list, or discharge diagnosis. It may also apply when the condition is confirmed after evaluation of progressive demyelinating disease. If the note uses only a broad neurologic symptom description, check documentation before coding.
Do not use for
Do not use this code for nonspecific dizziness, weakness, or gait disturbance without a documented diagnosis. Do not substitute it for other demyelinating disorders unless the record specifically supports diffuse sclerosis.
Coding tip
Code the documented diagnosis, not the suspected neurologic syndrome; if the wording is unclear, query the provider.