Primary blast injury of lung, bilateral, subs encntr

This code signifies lung damage resulting from the direct impact of a blast wave, affecting both lungs. This injury is characterized by barotrauma, hemorrhage, and contusion, and the patient is receiving follow-up care for this previously diagnosed condition.

Apply this code when documenting ongoing treatment or evaluation for a patient who sustained a primary blast injury to both lungs. This includes scenarios such as follow-up appointments for monitoring lung function, managing complications, or rehabilitation after the initial acute phase of injury.

• Ensure documentation clearly specifies "bilateral" lung involvement and that the encounter is not the initial treatment.
• Always sequence this code after the appropriate external cause code (e.g., W39 for discharge of firearm, explosion).
• Consider additional codes for specific complications or associated injuries, such as pneumothorax or hemothorax, if present.