Cytomegaloviral mononucleosis with polyneuropathy

This code signifies an active infection with cytomegalovirus (CMV) presenting as mononucleosis, complicated by the development of polyneuropathy. Polyneuropathy refers to a generalized disorder of peripheral nerves, which in this context, is a direct consequence of the CMV infection.

Use this code when documentation clearly indicates a diagnosis of CMV mononucleosis and a co-occurring polyneuropathy attributed to the viral infection. This typically applies to patients exhibiting symptoms of both mononucleosis (e.g., fever, fatigue, lymphadenopathy) and peripheral nerve dysfunction (e.g., weakness, numbness, tingling in multiple limbs) where CMV is identified as the causative agent.

• Ensure documentation explicitly links the polyneuropathy to the CMV mononucleosis.
• Do not use this code if the polyneuropathy is due to another cause or if the CMV infection is not presenting as mononucleosis.
• Consider additional codes for specific manifestations of the polyneuropathy, if documented and clinically appropriate.