Viral endocarditis

This code signifies an inflammation of the inner lining of the heart chambers and heart valves (endocardium) caused by a viral infection. It represents a specific type of endocarditis where a virus is identified as the causative agent, leading to symptoms such as fever, heart murmurs, and potential cardiac dysfunction.

Apply this code when documentation explicitly states a diagnosis of endocarditis due to a viral etiology. This typically occurs after diagnostic testing, such as viral cultures or serology, confirms the presence of a viral pathogen in a patient presenting with signs and symptoms of endocarditis.

• Ensure the documentation clearly specifies "viral" as the cause of endocarditis; do not assume a viral origin.
• Distinguish from bacterial endocarditis (I33.0, I33.9) or endocarditis of unspecified cause (I38).
• Code any associated heart valve involvement or cardiac complications separately, if documented.