Cerebellar ataxia in diseases classified elsewhere

This code signifies cerebellar ataxia that arises as a manifestation of another underlying disease process, rather than being a primary neurological disorder itself. It indicates impaired coordination and balance due to cerebellar dysfunction, where the etiology is attributable to a separate, classifiable condition.

Apply this code when documentation clearly links cerebellar ataxia to an identified systemic or neurological disease that has its own distinct ICD-10-CM code. Examples include ataxia secondary to paraneoplastic syndromes, metabolic disorders, or certain infectious diseases. The underlying condition must also be coded.

• Always sequence the underlying disease causing the cerebellar ataxia first, followed by this code.
• Do not use this code if the cerebellar ataxia is the primary diagnosis or if it's specifically linked to alcoholism or myxedema (refer to Excludes1 notes).
• Ensure the medical record explicitly states the connection between the cerebellar ataxia and the "classified elsewhere" disease.