ICD-10-CM 2027
ICD-10 code for Hemiballism
From the official ICD-10-CM alphabetic index entry “Hemiballism (us)”. Page updated September 29, 2026.
About coding Hemiballism
The ICD-10-CM code for Hemiballism is G25.5 (Other chorea).
Within G25, choose G25.5 (Other chorea) only when documentation doesn't support a more specific option: essential tremor (G25.0), drug-induced tremor (G25.1), other specified forms of tremor (G25.2), myoclonus (G25.3), drug-induced chorea (G25.4), drug induced tics and other tics of organic origin (G25.6), other and unspecified drug induced movement disorders (G25.7), other specified extrapyramidal and movement disorders (G25.8) and 1 more.
Don't report G25.5 together with the conditions in its Excludes1 note: chorea NOS with heart involvement (I02.0), Huntington's chorea (G10), rheumatic chorea (I02.-) and Sydenham's chorea (I02.-).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
Don't confuse with (Excludes1 for G25.5)
Common questions about Hemiballism ICD-10 codes
What is the ICD-10 code for Hemiballism?
- G25.5 — Other chorea.
Is G25.5 billable?
- Yes. G25.5 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can G25.5 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict G25.5 as a principal diagnosis.
Is G25.5 a CC or MCC?
- No. G25.5 is neither a CC nor an MCC under MS-DRG v44.0.