I02

Non-Billable
ChapterI00–I99
Rankcategory
Official Description

Rheumatic chorea

Metadata & Insights
  • •2026 ICD-10-CM Edition - Effective October 1, 2025.
  • •Non-billable category (requires more specific sub-code).
  • •Chapter 9: Diseases of the Circulatory System (I00-I99).

CH9 Parent Instructions

Excludes2(Not included here)
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
  • systemic connective tissue disorders (M30-M36)
  • transient cerebral ischemic attacks and related syndromes (G45.-)

Instructional Notes

Includes
  • Sydenham's chorea
Excludes1(Not coded here)
  • chorea NOS (G25.5)
  • Huntington's chorea (G10)

Clinical Hierarchy

CH9Diseases of the circulatory system (I00-I99)
I00-I02Acute rheumatic fever (I00-I02)
I02Rheumatic chorea
I02.0Rheumatic chorea with heart involvement
I02.9Rheumatic chorea without heart involvement

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to I02:

chapterCH9
Diseases of the circulatory system (I00-I99)
View context instructions

Alphabetic Index Mentions

These are Diagnosis Index lookup paths that route to I02. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

25 raw paths
Chorea (chronic) (gravis) (posthemiplegic) (senile) (spasmodic)9 unique routes
minor→I02(2 variants)
with heart involvement→I02
rheumatic (chronic)→I02(2 variants)
with heart involvement→I02
Sydenham's→I02
with(4 variants)
heart involvement→I02(4 variants)
active or acute (conditions in I01-)→I02
rheumatic→I02(2 variants)
with valvular disorder→I02
Degeneration, degenerative1 unique routes
myocardial, myocardium (fatty) (hyaline) (senile)
with rheumatic fever (conditions in I00)
active, acute or subacute
with chorea→I02
Disease, diseased2 unique routes
heart (organic)(2 variants)
rheumatic (chronic) (inactive) (old) (quiescent) (with chorea)
active or acute
with chorea (acute) (rheumatic) (Sydenham's)→I02
with
rheumatic fever (conditions in I00)
active
with chorea→I02
Endocarditis (chronic) (marantic) (nonbacterial) (thrombotic) (valvular)10 unique routes
acute or subacute
rheumatic (aortic) (mitral) (pulmonary) (tricuspid)
with chorea (acute) (rheumatic) (Sydenham's)→I02
aortic (heart) (nonrheumatic) (valve)(3 variants)
rheumatic(2 variants)
active or acute
with chorea (acute) (rheumatic) (Sydenham's)→I02
with mitral disease
active or acute
with chorea (acute) (rheumatic) (Sydenham's)→I02
with
mitral disease
active or acute
with chorea (acute) (rheumatic) (Sydenham's)→I02
mitral (chronic) (double) (fibroid) (heart) (inactive) (valve) (with chorea)(2 variants)
active or acute
with chorea (acute) (rheumatic) (Sydenham's)→I02
with
aortic (valve) disease
active or acute
with chorea (acute) (rheumatic) (Sydenham's)→I02
pulmonary (chronic) (heart) (valve)(2 variants)
acute or subacute
rheumatic
with chorea (acute) (rheumatic) (Sydenham's)→I02
rheumatic (chronic) (inactive) (with chorea)
active or acute
with chorea (acute) (rheumatic) (Sydenham's)→I02
rheumatic (chronic) (inactive) (with chorea)
active or acute (aortic) (mitral) (pulmonary) (tricuspid)
with chorea (acute) (rheumatic) (Sydenham's)→I02
tricuspid (chronic) (heart) (inactive) (rheumatic) (valve) (with chorea)
active or acute
with chorea (acute) (rheumatic) (Sydenham's)→I02
Failure, failed3 unique routes
heart (acute) (senile) (sudden)
congestive
rheumatic (chronic) (inactive) (with chorea)
active or acute
with chorea→I02
ventricular(2 variants)
left(2 variants)
rheumatic (chronic) (inactive) (with chorea)
active or acute
with chorea→I02
with rheumatic fever (conditions in I00)
active
with chorea→I02

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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