- 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
- 338 Pain, not elsewhere classified