ICD-10 I02.0
Billable / Specific CCRheumatic chorea with heart involvement
About ICD-10-CM I02.0
ICD-10-CM code I02.0 represents Rheumatic chorea with heart involvement. This is a billable/specific code in the Circulatory System chapter (block I02). The 2026 edition of ICD-10-CM I02.0 became effective on October 1, 2025.
Coding Tips for I02.0
Specialist guidance from the PayerReady Medical Coding Team. Specificity warnings, HCC capture rules, sequencing notes.
I02.0 is designated CC for MS-DRG grouping. On inpatient claims, this code can shift the DRG to the with-CC variant when documented as a present-on-admission secondary diagnosis. Hospital CDI programs flag CC opportunities during chart review. Failure to capture this code may leave 30 to 80 percent of the inpatient stay revenue unrealized.
Inclusion Terms / Approximate Synonyms
Clinical terms and conditions classified under I02.0. Per CMS ICD-10-CM Tabular 2026.
- Chorea NOS with heart involvement
- Rheumatic chorea with heart involvement of any type classifiable under I01.-
Inpatient DRG Impact, CC
codes Rheumatic chorea with heart involvement. As a Complication/Comorbidity (CC), this contributes to DRG severity adjustment when documented alongside the principal diagnosis.
Medicare LCD Coverage for I02.0
Local Coverage Determinations (LCDs) from CMS MACs that list I02.0 as a covered diagnosis.
Showing top 10 of 144 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing I02.0.
2 Aetna
2 Cigna
5 Medicare
CPT Codes Commonly Billed with I02.0
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
Convert I02.0 to ICD-9-CM
Per CMS General Equivalence Mappings (GEMs), useful for legacy data review and historical claim analysis.
| ICD-10 | ICD-9 | Mapping Flags |
|---|---|---|
| I02.0 | 3920 | 00000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To I02.0
Other codes in section I00-I02 (Acute rheumatic fever).
ICD-10 I02.0, Billing FAQ
Is ICD-10 code I02.0 billable? +
Yes, I02.0 is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.
What other names or terms map to I02.0? +
ICD-10 I02.0 includes: Chorea NOS with heart involvement; Rheumatic chorea with heart involvement of any type classifiable under I01.-.
Is I02.0 a CC or MCC for inpatient DRG? +
Yes, this code is designated as CC. Documenting as a secondary diagnosis on inpatient claims can shift the DRG to a higher-weighted category.
What CPT codes are commonly billed with I02.0? +
Procedures frequently paired with I02.0 include: C8925, C8927, C8926.
What ICD-9 codes does I02.0 map to? +
Per CMS GEMs, I02.0 maps to ICD-9 codes: 3920. Useful for legacy data review and historical claim analysis.
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on May 31, 2026.
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