ICD-10 Code G32.81 – Cerebellar ataxia in diseases classified elsewhere (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G32.81 – Cerebellar ataxia in diseases classified elsewhere
What it is
Use this code for cerebellar ataxia that is due to another documented disease. It describes incoordination from cerebellar involvement, not a primary ataxia diagnosis.
Clinical signs
Typical findings include gait instability, limb incoordination, dysmetria, and impaired balance. Clinical features vary; refer to documentation for the underlying cause and neurologic findings.
When to use this code
Assign G32.81 when the chart links cerebellar ataxia to another condition, such as a documented neurologic or systemic disease. You should code the underlying disease first when instructed by the record and sequencing rules. Use this code only when the provider clearly identifies the ataxia as secondary.
Do not use for
Do not use this code for unspecified ataxia or for cerebellar ataxia without a documented cause. Check documentation if the record does not clearly state that the ataxia is due to another disease.
Coding tip
Always capture the underlying condition and verify that the provider documents the causal relationship before assigning G32.81.