Cytomegaloviral pneumonitis

This code signifies an inflammation of the lung tissue specifically caused by a cytomegalovirus (CMV) infection. It represents a form of viral pneumonia where CMV is identified as the causative agent. This condition can range from mild to severe, particularly in immunocompromised individuals.

Use this code when documentation clearly states a diagnosis of cytomegaloviral pneumonitis. This diagnosis is typically supported by laboratory confirmation of CMV infection (e.g., PCR, viral culture) in conjunction with clinical signs and symptoms of pneumonia and imaging findings consistent with lung inflammation.

• Ensure the documentation explicitly links CMV as the etiology of the pneumonitis.
• Do not use this code for other manifestations of CMV infection (e.g., CMV colitis, retinitis) without documented pneumonitis.
• Consider sequencing this code after a code for the underlying immunocompromised state, if applicable (e.g., HIV, transplant status).