Pneumonia in cytomegalic inclusion disease

This code identifies pneumonia specifically caused by cytomegalovirus (CMV) infection, characterized by the presence of enlarged cells with intranuclear inclusions. It represents a pulmonary manifestation of cytomegalic inclusion disease, often seen in immunocompromised individuals or neonates.

Apply this code when documentation clearly states pneumonia due to cytomegalovirus, particularly when the characteristic cellular changes (cytomegalic inclusions) are noted in pathology reports or clinical descriptions. This is frequently encountered in transplant recipients, HIV/AIDS patients, or infants with congenital CMV.

• Ensure the documentation explicitly links the pneumonia to cytomegalovirus infection.
• Do not use this code for unspecified viral pneumonia or pneumonia due to other specific viruses.
• Consider sequencing this code after the underlying condition (e.g., HIV, transplant status) if applicable, following ICD-9-CM guidelines.