I33 is the ICD-10 code for Acute and subacute endocarditis. It is a three-character category divided into 2 subcodes; use the subcode whenever the record supports that level of detail. It belongs to the block I30–I52 (Other forms of heart disease) in Chapter IX, Diseases of the circulatory system.
- Code type
- Category (3 characters)
- Chapter
- IX · I00–I99
- Classification
- WHO ICD-10, 2019 version
What I33 excludes
Conditions that look similar but belong under another code.
Subcodes of I33
I33 in national editions
Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.
I33Akut och subakut endokardit (inflammatorisk hjärtklaffsjukdom)
DI33Akut og subakut endokarditis
I33Akuutti tai puoliakuutti sydämen sisäkalvon tulehdus
I33Akute und subakute Endokarditis
I33Endocardite aiguë et subaiguë
I33acute en subacute endocarditis
Based on the World Health Organization’s International Statistical Classification of Diseases and Related Health Problems, 10th revision (ICD-10), 2019 version, and the national editions published by each country’s health authority. This page is a reference, not coding advice; follow your national coding rules when you report.
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