| ICD Code | Description |
|---|---|
| 330 | Cerebral degenerations usually manifest in childhood |
| 331 | Other cerebral degenerations |
| 332 | Parkinson's disease |
| 333 | Other extrapyramidal disease and abnormal movement disorders |
| 334 | Spinocerebellar disease |
| 335 | Anterior horn cell disease |
| 336 | Other diseases of spinal cord |
| 337 | Disorders of the autonomic nervous system |