ICD-10 Code G32 – Other degenerative disorders of nervous system in diseases classified elsewhere (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G32 – Other degenerative disorders of nervous system in diseases classified elsewhere
What it is
G32 identifies degenerative nervous system disorders that occur as a manifestation of another underlying disease. Use it when the neurologic degeneration is documented as secondary or “in diseases classified elsewhere.”
Clinical signs
Clinical features vary; refer to documentation. You may see progressive neurologic decline, movement problems, cognitive changes, or other degenerative findings linked to the primary condition.
When to use this code
Use G32 when the provider documents a degenerative disorder of the nervous system caused by another disease and does not name a more specific code. It is appropriate for secondary neurologic degeneration tied to a documented underlying disorder. Check the record for the causal condition and code it separately when required.
Do not use for
Do not use G32 for primary degenerative neurologic diseases with their own specific codes. Avoid it when documentation does not clearly link the nervous system disorder to another disease.
Coding tip
Always code the underlying disease first when the record supports a causal relationship.