I40.1: Isolated myocarditis
I40.1 is the billable ICD-10-CM diagnosis code for Isolated myocarditis. It is a fully specified code, so it can be reported on a claim (subject to clinical documentation and your payer's rules).
Frequently asked questions
What is ICD-10-CM code I40.1?
I40.1 is the ICD-10-CM diagnosis code for Isolated myocarditis. It belongs to category I40 (Acute myocarditis).
Is I40.1 a billable code?
Yes. I40.1 is a billable, fully specified ICD-10-CM code, so it can be used on a claim (subject to documentation and payer rules).
What category does I40.1 belong to?
I40.1 is part of ICD-10-CM category I40 — Acute myocarditis, which has 8 billable codes.
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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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