Gammaherpesviral mononucleosis without complication

This code signifies an infection caused by a gammaherpesvirus, most commonly Epstein-Barr virus (EBV), presenting as infectious mononucleosis without any associated complications. Patients typically exhibit symptoms such as fever, pharyngitis, and lymphadenopathy.

Apply this code when documentation confirms a diagnosis of infectious mononucleosis due to a gammaherpesvirus, and there is no mention of secondary infections, organ involvement, or other adverse outcomes. Supporting documentation would include positive serological tests for EBV or other gammaherpesviruses, along with a clinical picture consistent with uncomplicated mononucleosis.

• Ensure documentation explicitly states "without complication" or similar phrasing to justify this specific code.
• If any complications are noted (e.g., splenic rupture, hepatitis, airway obstruction), a more specific code reflecting the complication should be used.
• Do not use this code for mononucleosis caused by other viral agents (e.g., cytomegalovirus); those would be coded elsewhere.