Primary blast injury of lung, unilateral, initial encounter

This code signifies a direct lung injury resulting from the sudden pressure changes of a blast wave, affecting only one lung. This type of trauma is distinct from injuries caused by flying debris or impact.

Apply this code for patients presenting with lung damage, such as contusions or lacerations, directly attributable to the primary blast effect, and where only one lung is involved. This is used for the initial treatment of such an injury.

• Ensure documentation clearly specifies "primary blast injury" and "unilateral" lung involvement.
• Confirm this is the initial encounter for treatment of this specific injury.
• Do not use for secondary or tertiary blast injuries (e.g., penetrating trauma from shrapnel).