ICD-10-CM 2027
ICD-10 code for chorea
From the official ICD-10-CM alphabetic index entry “Chorea (chronic) (gravis) (posthemiplegic) (senile) (spasmodic)”. Page updated September 29, 2026.
About coding chorea
The ICD-10-CM code for chorea is G25.5 (Other chorea). The official index lists 17 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on G25.5.
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.
More specific chorea codes (official index)
- with
- heart involvement I02.0 — Rheumatic chorea with heart involvement
- active or acute (conditions in I01-) I02.0 — Rheumatic chorea with heart involvement
- rheumatic I02.9 — Rheumatic chorea without heart involvement
- with valvular disorder I02.0 — Rheumatic chorea with heart involvement
- rheumatic heart disease (chronic) (inactive)(quiescent) - code to rheumatic heart condition involved
- drug-induced G25.4 — Drug-induced chorea
- habit F95.8 — Other tic disorders
- hereditary G10 — Huntington's disease
- Huntington's G10 — Huntington's disease
- hysterical F44.4 — Conversion disorder with motor symptom or deficit
- minor I02.9 — Rheumatic chorea without heart involvement
- with heart involvement I02.0 — Rheumatic chorea with heart involvement
- progressive G25.5 — Other chorea
- hereditary G10 — Huntington's disease
- rheumatic (chronic) I02.9 — Rheumatic chorea without heart involvement
- with heart involvement I02.0 — Rheumatic chorea with heart involvement
- Sydenham's I02.9 — Rheumatic chorea without heart involvement
- with heart involvement
- nonrheumatic G25.5 — Other chorea
Don't confuse with (Excludes1 for G25.5)
Common questions about chorea ICD-10 codes
What is the ICD-10 code for chorea?
- G25.5 — Other chorea. More specific codes apply when the documentation supports them: I02.0, I02.0, I02.9, I02.0 and others below.
What is the ICD-10 code for drug-induced chorea?
- G25.4 — Drug-induced chorea.
What is the ICD-10 code for habit chorea?
- F95.8 — Other tic disorders.
What is the ICD-10 code for hereditary chorea?
- G10 — Huntington's disease.
What is the ICD-10 code for huntington's chorea?
- G10 — Huntington's disease.
What is the ICD-10 code for hysterical chorea?
- F44.4 — Conversion disorder with motor symptom or deficit.
What is the ICD-10 code for minor chorea?
- I02.9 — Rheumatic chorea without heart involvement.
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.