Other specified degenerative disorders of nervous system in diseases classified elsewhere

**Excludes1:** - superior hemorrhagic polioencephalitis [Wernicke's encephalopathy] (E51.2)

**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.-)