Current
G23 — Other degenerative diseases of basal ganglia
Part of Chapter 6: Diseases of the nervous system , block Extrapyramidal and movement disorders (G20-G26) .
Official Notes
Excludes2
multi-system degeneration of the autonomic nervous system ( G90.3 )
Child Codes
- G23.0 Hallervorden-Spatz disease Billable
- G23.1 Progressive supranuclear ophthalmoplegia [Steele-Richardson-Olszewski] Billable
- G23.2 Striatonigral degeneration Billable
- G23.3 Hypomyelination with atrophy of the basal ganglia and cerebellum Billable
- G23.8 Other specified degenerative diseases of basal ganglia Billable
- G23.9 Degenerative disease of basal ganglia, unspecified Billable
FY 2027 effective October 1, 2026 · CDC NCHS and CMS