ICD-10 I09.9
Billable / SpecificRheumatic heart disease, unspecified
About ICD-10-CM I09.9
ICD-10-CM code I09.9 represents Rheumatic heart disease, unspecified. This is a billable/specific code in the Circulatory System chapter (block I09). The 2026 edition of ICD-10-CM I09.9 became effective on October 1, 2025.
Inclusion Terms / Approximate Synonyms
Clinical terms and conditions classified under I09.9. Per CMS ICD-10-CM Tabular 2026.
- Rheumatic carditis
Type 1 Excludes
Pure excludes, these codes can never be coded together with I09.9. The conditions are mutually exclusive (e.g., congenital vs acquired forms).
- rheumatoid carditis (M05.31)
Medicare LCD Coverage for I09.9
Local Coverage Determinations (LCDs) from CMS MACs that list I09.9 as a covered diagnosis.
Showing top 10 of 136 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing I09.9.
3 Cigna
5 Medicare
1 Aetna
CPT Codes Commonly Billed with I09.9
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
We don't have CPT pairings indexed for this specific code yet. Use the CPT search above to find common procedures, or check your payer's published medical policy for code-specific guidance.
Convert I09.9 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 |
|---|---|---|
| I09.9 | 39890 | 00000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To I09.9
Other codes in section I05-I09 (Chronic rheumatic heart diseases).
ICD-10 I09.9, Billing FAQ
Is ICD-10 code I09.9 billable? +
Yes, I09.9 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 I09.9? +
ICD-10 I09.9 includes: Rheumatic carditis.
What codes are Type 1 Excludes for I09.9? +
Type 1 Excludes (never code together with I09.9): rheumatoid carditis (M05.31)
What ICD-9 codes does I09.9 map to? +
Per CMS GEMs, I09.9 maps to ICD-9 codes: 39890. 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 July 18, 2026.
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