ICD-10-CM · Chapter 6 · G00-G99
G23 Other degenerative diseases of basal ganglia
Excludes 2 (not included here)
- multi-system degeneration of the autonomic nervous system (G90.3)
Subcodes
Each subcode links to a detail page with full clinical annotations.
| Code | Description | Billable |
|---|---|---|
| G23..0 | Hallervorden-Spatz disease | Yes |
| G23..1 | Progressive supranuclear ophthalmoplegia [Steele-Richardson-Olszewski] | Yes |
| G23..2 | Striatonigral degeneration | Yes |
| G23..3 | Hypomyelination with atrophy of the basal ganglia and cerebellum | Yes |
| G23..8 | Other specified degenerative diseases of basal ganglia | Yes |
| G23..9 | Degenerative disease of basal ganglia, unspecified | Yes |
Last reviewed: September 2026