I01: Rheumatic fever with heart involvement
Codes under I01 (Rheumatic fever with heart involvement). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| I01.0 | Acute rheumatic pericarditis | ✓ |
| I01.0 | Acute rheumatic pericarditis | ✓ |
| I01.1 | Acute rheumatic endocarditis | ✓ |
| I01.1 | Acute rheumatic endocarditis | ✓ |
| I01.2 | Acute rheumatic myocarditis | ✓ |
| I01.2 | Acute rheumatic myocarditis | ✓ |
| I01.8 | Other acute rheumatic heart disease | ✓ |
| I01.8 | Other acute rheumatic heart disease | ✓ |
| I01.9 | Acute rheumatic heart disease, unspecified | ✓ |
| I01.9 | Acute rheumatic heart disease, unspecified | ✓ |
Frequently asked questions
What is ICD-10-CM code I01?
I01 is an ICD-10-CM category covering Rheumatic fever with heart involvement. It contains 10 more specific diagnosis codes, 10 of which are billable.
Is I01 a billable code?
No — I01 is a category header and isn't billable on its own. Code to the highest level of specificity using one of its subcodes (for example I01.0 — Acute rheumatic pericarditis). 10 of the 10 codes under I01 are billable.
What codes fall under I01?
I01 includes I01.0, I01.0, I01.1, I01.1, I01.2, plus 5 more. See the full list with descriptions and billable status above.
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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