Infectious mononucleosis, unspecified with meningitis

This code signifies a diagnosis of infectious mononucleosis, where the specific type of mononucleosis is not documented, and the patient is also experiencing meningitis. Infectious mononucleosis is typically caused by the Epstein-Barr virus (EBV), and meningitis refers to inflammation of the membranes surrounding the brain and spinal cord.

Use this code when the medical record clearly states a diagnosis of infectious mononucleosis and meningitis, but the specific organism causing the mononucleosis is not identified. Documentation should confirm both conditions are present and that the meningitis is a complication of the mononucleosis.

• Always code the specific type of infectious mononucleosis (e.g., due to EBV) if documented.
• Ensure documentation explicitly links the meningitis to the infectious mononucleosis.
• Do not use this code if the meningitis is unrelated to the mononucleosis or if the mononucleosis is specified.