I51.4

Billable

Myocarditis, unspecified

I51.4 is the ICD-10-CM code for Myocarditis, unspecified. It is a billable, specific code valid for reimbursement.

Status
Billable
Chapter
I00-I99
Parent
I51
Edition
FY2026

I00-I99 Diseases of the circulatory system

Includes

  • Chronic (interstitial) myocarditis
  • Myocardial fibrosis
  • Myocarditis NOS

Excludes1 — not coded here

  • acute or subacute myocarditis (I40.-)

Frequently asked questions

What is ICD-10 code I51.4?
I51.4 is the ICD-10-CM code for "Myocarditis, unspecified". It falls under I00-I99 Diseases of the circulatory system.
Is I51.4 a billable code?
Yes — I51.4 is a billable, specific ICD-10-CM code valid for reimbursement.
What is excluded from I51.4?
Excludes1 (not coded here): acute or subacute myocarditis (I40.-).

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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