Acute bronchiolitis due to respiratory syncytial virus

This code signifies an acute inflammatory condition of the small airways (bronchioles) in the lungs, specifically identified as being caused by the respiratory syncytial virus (RSV). This infection primarily affects infants and young children, leading to symptoms such as wheezing, coughing, and difficulty breathing.

Use this code when documentation clearly states a diagnosis of acute bronchiolitis and explicitly identifies RSV as the causative organism. This diagnosis is typically made based on clinical presentation and confirmed by laboratory testing (e.g., nasal swab for RSV).

• Ensure the documentation specifies "acute" bronchiolitis and explicitly links it to RSV.
• Do not use this code for bronchiolitis due to other infectious agents or unspecified causes.
• Consider sequencing this code as the primary diagnosis when it is the reason for the encounter.