Infectious mononucleosis, unspecified with polyneuropathy

This code signifies a diagnosis of infectious mononucleosis, where the specific type of mononucleosis is not documented, and the patient also presents with polyneuropathy. Polyneuropathy in this context refers to a generalized disorder affecting multiple peripheral nerves, often a neurological complication of the viral infection.

Use this code when the medical record clearly documents infectious mononucleosis, but the causative agent (e.g., Epstein-Barr virus, cytomegalovirus) is not specified, and there is an associated diagnosis of polyneuropathy. Documentation should explicitly link the polyneuropathy as a complication or manifestation of the mononucleosis.

• Ensure documentation specifies "unspecified" mononucleosis if the viral etiology is unknown. If the specific virus is identified, a more precise code for infectious mononucleosis should be used.
• Verify that the polyneuropathy is clearly attributed to the infectious mononucleosis; otherwise, code the conditions separately.
• Review for any additional complications or manifestations of mononucleosis that may require separate coding.