ICD-10 Code G32.8 – Other specified degenerative disorders of nervous system in diseases classified elsewhere (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G32.8 – Other specified degenerative disorders of nervous system in diseases classified elsewhere
What it is
G32.8 identifies a degenerative nervous system disorder that is caused by another underlying disease but does not fit a more specific listed code. Use it when documentation names a specified degenerative neurologic condition linked to another condition.
Clinical signs
Clinical features vary; refer to documentation. Findings may reflect progressive neurologic decline, such as movement, coordination, or cognitive problems, depending on the underlying disorder.
When to use this code
Use this code when the provider documents a specified degenerative disorder of the nervous system that is secondary to another disease and no more precise code is available. It is appropriate when the record clearly links the neurologic condition to an underlying cause. Check documentation for the causal disease and specificity.
Do not use for
Do not use it for primary degenerative nervous system diseases or when a more specific code describes the condition. Avoid it if the record does not identify the disorder as due to another disease.
Coding tip
Always code the underlying disease first when required, and verify that the neurologic disorder is documented as “other specified” rather than a named diagnosis.