Cytomegaloviral mononucleosis with other complication

This code signifies an active cytomegalovirus (CMV) infection presenting as mononucleosis, accompanied by additional complications beyond typical symptoms. These complications can affect various organ systems, such as the liver (hepatitis), lungs (pneumonitis), or gastrointestinal tract (colitis). It indicates a more severe or widespread manifestation of CMV mononucleosis.

Use this code when documentation clearly states a diagnosis of CMV mononucleosis and specifies an associated complication, such as CMV hepatitis, pneumonitis, or retinitis. Supporting documentation should include laboratory confirmation of CMV infection (e.g., positive CMV IgM, PCR) and clinical findings consistent with both mononucleosis and the identified complication.

• Always code the specific complication(s) associated with the CMV mononucleosis in addition to this code.
• Distinguish from B27.10 (unspecified complication) or B27.11 (with polyneuropathy) when a different complication is documented.
• Ensure the medical record explicitly links the complication to the CMV mononucleosis.