I02.9 Rheumatic chorea without heart involvement

Billable ICD-10-CM code, FY2026. Acts as a Complication or Comorbidity (CC) as a secondary diagnosis.

Applicable to

• Rheumatic chorea NOS

Applies from I02 Rheumatic chorea

Includes

• Sydenham's chorea

Excludes1 (never code together)

• chorea NOS (G25.5)
• Huntington's chorea (G10)

MS-DRG index

Defines the logic of DRG(s) 314-316 in MDC 05.

Approximate ICD-9-CM (GEMs)

• 392.9 Rheumatic chorea without mention of heart involvement

Code annotations containing back-references to I02.9

Back-references to I02

• Type 1 Excludes: G25.5 Other chorea ("rheumatic chorea (I02.-)")
• Type 1 Excludes: G25.5 Other chorea ("Sydenham's chorea (I02.-)")
• Type 2 Excludes: I51 Complications and ill-defined descriptions of heart disease ("heart disease specified as rheumatic (I00-I09)")

Diagnosis Index entries for I02.9

• Chorea (chronic) (gravis) (posthemiplegic) (senile) (spasmodic) › with › heart involvement › rheumatic
• Chorea (chronic) (gravis) (posthemiplegic) (senile) (spasmodic) › minor
• Chorea (chronic) (gravis) (posthemiplegic) (senile) (spasmodic) › rheumatic (chronic)
• Chorea (chronic) (gravis) (posthemiplegic) (senile) (spasmodic) › Sydenham's
• Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor) › rheumatic (active) (acute) (chronic) (subacute) › with central nervous system involvement

Nearby codes

• I02 Rheumatic chorea
• I02.0 Rheumatic chorea with heart involvement
• I02.9 Rheumatic chorea without heart involvement (this code)