Meningococcal myocarditis

This code represents inflammation of the heart muscle (myocarditis) specifically caused by an infection with Neisseria meningitidis. It signifies a severe cardiac complication arising from meningococcal disease, which can lead to significant heart dysfunction.

This code is used when documentation explicitly states meningococcal myocarditis. It applies in cases where laboratory confirmation of Neisseria meningitidis infection is present, alongside clinical and diagnostic evidence of myocardial inflammation. Ensure the physician's notes clearly link the cardiac involvement to the meningococcal etiology.

• Always code the underlying meningococcal infection first (e.g., A39.0-A39.4) as the primary diagnosis, followed by this code.
• Do not use this code for myocarditis due to other bacterial or viral causes; those have specific codes.
• Verify documentation specifies "meningococcal" and not just "bacterial" myocarditis to ensure accurate coding.