| Full description | Progressive supranuclear ophthalmoplegia [Steele-Richardson-Olszewski] |
| Billable | Yes |
| Chapter | Chapter 6: Diseases of the nervous system (G00-G99) |
| Section | Extrapyramidal and movement disorders (G20-G26) |
| Parent code | G23 — Other degenerative diseases of basal ganglia |