ICD-10-CM > G00-G99 > G30-G32 > G32 > G32.8 G32.8 Other specified degenerative disorders of nervous system in diseases classified elsewhere Non-Billable/Non-Specific Code First underlying disease, such as:amyloidosis cerebral degeneration (E85.-)cerebral degeneration (due to) hypothyroidism (E00.0-E03.9)cerebral degeneration (due to) neoplasm (C00-D49)cerebral degeneration (due to) vitamin B deficiency, except thiamine (E52-E53.-) Type 1 Excludes superior hemorrhagic polioencephalitis [Wernicke's encephalopathy] (E51.2) Codes G32.81Cerebellar ataxia in diseases classified elsewhereG32.89Other specified degenerative disorders of nervous system in diseases classified elsewhere