I33.0
I33.0: Acute and subacute infective endocarditis
Billable / specific codeICD-10-CM
I33.0 is a billable, specific ICD-10-CM code for acute and subacute infective endocarditis. It is valid for submission on a claim.
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Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- 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)
Risk adjustment
No CMS-HCC V28 category: this code does not change a RAF score.
Medicare coverage
I33.0 is named in 18 Medicare coverage policies: 18 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.
- A52850Billing and Coding: Cardiac Catheterization and Coronary Angiography
- A52868Billing and Coding: Transesophageal Echocardiography (TEE)
- A56394Billing and Coding: Colonoscopy and Sigmoidoscopy-Diagnostic
- A56456Billing and Coding: Colonoscopy/Sigmoidoscopy/Proctosigmoidoscopy
Alphabetic index entries that lead here
- Osler's nodes
- SBE(subacute bacterial endocarditis)
- Aneurysm›endocardial, infective(any valve)
- Endocarditis›bacterial(acute) (any valve) (subacute)
- Endocarditis›constrictive
- Endocarditis›infectious or infective(acute) (any valve) (subacute)
- Endocarditis›lenta(acute) (any valve) (subacute)
- Endocarditis›malignant(acute) (any valve) (subacute)
- Endocarditis›mycotic(acute) (any valve) (subacute)
- Endocarditis›pneumococcal(acute) (any valve) (subacute)
- Endocarditis›purulent(acute) (any valve) (subacute)
- Endocarditis›septic(acute) (any valve) (subacute)
Code history
Unchanged in every release from FY2024 to FY2027.