Meningococcal endocarditis

This code identifies inflammation of the inner lining of the heart (endocardium) specifically caused by Neisseria meningitidis bacteria. This is a severe and uncommon manifestation of meningococcal disease, often leading to significant cardiac complications.

Apply this code when documentation explicitly states a diagnosis of endocarditis confirmed to be caused by meningococcal infection. This typically requires positive blood cultures or tissue cultures identifying Neisseria meningitidis in a patient with clinical signs of endocarditis.

• Ensure the documentation clearly links Neisseria meningitidis as the causative agent of the endocarditis.
• Code any associated cardiac complications, such as heart failure or valvular damage, as secondary diagnoses.
• Do not confuse with endocarditis due to other bacterial pathogens; specificity is key for accurate coding.