G23.1 Progressive supranuclear ophthalmoplegia [Steele-Richardson-Olszewski]
Billable ICD-10-CM code, FY2026. Acts as a Complication or Comorbidity (CC) as a secondary diagnosis.
Applicable to
- Progressive supranuclear palsy
Applies from G23 Other degenerative diseases of basal ganglia
Excludes2 (not included here)
- multi-system degeneration of the autonomic nervous system (G90.3)
Risk adjustment (HCC)
- CMS-HCC V28: HCC 199 — Parkinson and Other Degenerative Disease of Basal Ganglia
- CMS-HCC V22: HCC 78 — Parkinson's and Huntington's Diseases
- RxHCC V08: HCC 161 — Parkinson Disease
- ESRD V24: HCC 78
MS-DRG index
Defines the logic of DRG(s) 056-057 in MDC 01.
Approximate ICD-9-CM (GEMs)
333.0 Other degenerative diseases of the basal ganglia (approximate)
Code annotations containing back-references to G23.1
Back-references to G23.1
- Type 2 Excludes:
H49 Paralytic strabismus ("progressive supranuclear ophthalmoplegia (G23.1)")
Back-references to G23
- Type 2 Excludes:
F98.4 Stereotyped movement disorders ("movement disorders of organic origin (G20-G25)") - Type 1 Excludes:
R25 Abnormal involuntary movements ("specific movement disorders (G20-G26)")
Diagnosis Index entries for G23.1
- Ophthalmoplegia › supranuclear, progressive
- Palsy › bulbar (progressive) (chronic) › supranuclear (progressive)
- Palsy › progressive supranuclear
- Paralysis, paralytic (complete) (incomplete) › progressive (atrophic) (bulbar) (spinal) › supranuclear
- Paralysis, paralytic (complete) (incomplete) › supranuclear (progressive)
- Steele-Richardson-Olszewski disease or syndrome
- Willige-Hunt disease or syndrome
Nearby codes
G23 Other degenerative diseases of basal gangliaG23.0 Hallervorden-Spatz diseaseG23.1 Progressive supranuclear ophthalmoplegia [Steele-Richardson-Olszewski] (this code)G23.2 Striatonigral degenerationG23.3 Hypomyelination with atrophy of the basal ganglia and cerebellumG23.8 Other specified degenerative diseases of basal gangliaG23.9 Degenerative disease of basal ganglia, unspecified