Cytomegaloviral pancreatitis

This code identifies inflammation of the pancreas specifically caused by a cytomegalovirus (CMV) infection. Cytomegaloviral pancreatitis is a rare but serious manifestation of CMV, often occurring in immunocompromised individuals.

Apply this code when documentation clearly indicates pancreatitis with a confirmed or highly suspected CMV etiology. This diagnosis is typically supported by laboratory findings (e.g., positive CMV PCR, serology) in conjunction with clinical signs and symptoms of pancreatitis.

• Ensure the documentation explicitly links the pancreatitis to CMV; do not assume a viral cause without specific evidence.
• Consider sequencing this code after a code for the underlying CMV infection (e.g., B25.9) if the pancreatitis is a manifestation of a more generalized CMV disease.
• Differentiate from other causes of pancreatitis, such as alcoholic, gallstone, or drug-induced pancreatitis, which have distinct codes.