G23: Other degenerative diseases of basal ganglia excludes2 multi-system degeneration of the autonomic nervous system (G90.3) |
| G23.0: Hallervorden-Spatz disease |
| G23.1: Progressive supranuclear ophthalmoplegia [Steele-Richardson-Olszewski] |
| G23.2: Striatonigral degeneration |
| G23.8: Other specified degenerative diseases of basal ganglia |
| G23.9: Degenerative disease of basal ganglia, unspecified |