Acute bronchitis due to parainfluenza virus

This code signifies an acute inflammation of the bronchial tree caused specifically by a parainfluenza viral infection. It presents with symptoms such as cough, wheezing, and shortness of breath, typically resolving within a few weeks. The diagnosis indicates a viral etiology rather than bacterial or other causes.

Apply this code when documentation explicitly states acute bronchitis and identifies parainfluenza virus as the causative agent. This is often supported by laboratory confirmation of parainfluenza virus or a strong clinical suspicion in the absence of other identified pathogens. Use for patients presenting with new onset bronchial inflammation attributed to this specific viral infection.

• Ensure the documentation clearly specifies "acute bronchitis" and explicitly links it to "parainfluenza virus."
• Do not use if the bronchitis is chronic or if the viral etiology is unspecified or due to a different virus.
• Consider sequencing this code as the primary diagnosis if it is the reason for the encounter.