I33.9
BillableAcute and subacute endocarditis, unspecified
I33.9 is the ICD-10-CM code for Acute and subacute endocarditis, unspecified. It is a billable, specific code valid for reimbursement.
I00-I99 Diseases of the circulatory system
What this means — in plain language
MedlinePlus · NIHWhat is endocarditis? Endocarditis is sometimes called infective endocarditis. It's a rare but life-threatening inflammation of the lining inside your heart's chambers and valves (the endocardium). Endocarditis is usually caused by germs that get into your bloodstream and travel to your heart. Once they get inside your heart, the germs can attach to the lining or get trapped in the valves. They start to grow,…
Read more about Endocarditis at MedlinePlus ↗Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.
Includes
- •Acute endocarditis NOS
- •Acute myoendocarditis NOS
- •Acute periendocarditis NOS
- •Subacute endocarditis NOS
- •Subacute myoendocarditis NOS
- •Subacute periendocarditis NOS
Medications indicated for this condition
FDA labeling- VancomycinGlycopeptide Antibacterial [EPC]›
- penicillin G›
- Ampicillin›
- Cefazolin›
- CilastatinPenem Antibacterial [EPC]›
- Imipenem and Cilastatin Sodium›
- penicillin V›
- Rilonacept›
- Streptomycin›
Drugs whose FDA labeling lists this condition's category among its indications. Informational only — not a treatment recommendation or medical advice.
Frequently asked questions
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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