I09.1

Billable

Rheumatic diseases of endocardium, valve unspecified

I09.1 is the ICD-10-CM code for Rheumatic diseases of endocardium, valve unspecified. It is a billable, specific code valid for reimbursement.

Status
Billable
Chapter
I00-I99
Parent
I09
Edition
FY2026

I00-I99 Diseases of the circulatory system

Includes

  • Rheumatic endocarditis (chronic)
  • Rheumatic valvulitis (chronic)

Excludes1 — not coded here

  • endocarditis, valve unspecified (I38)

Frequently asked questions

What is ICD-10 code I09.1?
I09.1 is the ICD-10-CM code for "Rheumatic diseases of endocardium, valve unspecified". It falls under I00-I99 Diseases of the circulatory system.
Is I09.1 a billable code?
Yes — I09.1 is a billable, specific ICD-10-CM code valid for reimbursement.
What is excluded from I09.1?
Excludes1 (not coded here): endocarditis, valve unspecified (I38).

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

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