Acute and subacute bacterial endocarditis

This code signifies an infection of the heart's inner lining (endocardium) and/or heart valves, specifically caused by bacteria. It encompasses both rapid-onset (acute) and more gradual (subacute) forms of this bacterial infection.

Apply this code when documentation clearly indicates a diagnosis of bacterial endocarditis, specifying an acute or subacute presentation. This is typically supported by positive blood cultures identifying a bacterial pathogen, echocardiographic findings of vegetations, and clinical signs of infection.

• Differentiate from non-bacterial endocarditis, which would require a different code.
• Ensure the documentation specifies "bacterial" to justify using this code; otherwise, an unspecified endocarditis code may be more appropriate.
• Sequence this code as the principal diagnosis when it is the primary reason for the admission or encounter.