Respiratory syncytial virus pneumonia

This diagnosis code signifies an acute inflammation of the lung parenchyma caused specifically by the respiratory syncytial virus (RSV). It represents a lower respiratory tract infection, often seen in infants and young children, leading to symptoms such as cough, wheezing, and difficulty breathing.

Assign this code when medical record documentation explicitly states a diagnosis of pneumonia due to RSV. This is typically supported by laboratory confirmation of RSV infection (e.g., PCR, rapid antigen test) in a patient presenting with clinical signs and symptoms of pneumonia.

• Ensure documentation clearly links RSV as the causative agent of the pneumonia; do not assume RSV if only "viral pneumonia" is noted.
• Distinguish from other viral pneumonias; if the specific virus is not identified, a more general viral pneumonia code may be appropriate.
• Always review for any associated conditions, such as bronchiolitis, which may require additional coding.