I33.0

Billable

Acute and subacute infective endocarditis

I33.0 is the ICD-10-CM code for Acute and subacute infective endocarditis. It is a billable, specific code valid for reimbursement.

Status
Billable
Chapter
I00-I99
Parent
I33
Edition
FY2026

I00-I99 Diseases of the circulatory system

Includes

  • Bacterial endocarditis (acute) (subacute)
  • Infective endocarditis (acute) (subacute) NOS
  • Endocarditis lenta (acute) (subacute)
  • Malignant endocarditis (acute) (subacute)
  • Purulent endocarditis (acute) (subacute)
  • Septic endocarditis (acute) (subacute)
  • Ulcerative endocarditis (acute) (subacute)
  • Vegetative endocarditis (acute) (subacute)

Use additional code

  • code (B95-B97) to identify infectious agent

Frequently asked questions

What is ICD-10 code I33.0?
I33.0 is the ICD-10-CM code for "Acute and subacute infective endocarditis". It falls under I00-I99 Diseases of the circulatory system.
Is I33.0 a billable code?
Yes — I33.0 is a billable, specific ICD-10-CM code valid for reimbursement.

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

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