Cerebellar Ataxia

Cerebellar ataxia is a clinical syndrome with multiple possible etiologies, not a standalone diagnosis. The appropriate DC depends on the underlying cause: cerebellar stroke (DC 8008 + residuals), multiple sclerosis with cerebellar involvement (DC 8018 minimum 30% + residuals), alcoholic cerebellar degeneration (rate by analogy + concurrent alcohol-use disorder under § 4.130), hereditary spinocerebellar ataxia / Friedreich's ataxia (DC 8004 by analogy with minimum 30% framework), post-traumatic cerebellar injury (DC 8045 TBI residuals), paraneoplastic cerebellar degeneration (rate by analogy + the underlying malignancy). Where ataxia is a standalone manifestation without separately ratable cause (idiopathic late-onset cerebellar ataxia), DC 8004 by analogy with minimum 30% applies.