Accidental malfunction of gas, air or sprng-op gun, subs

This code signifies an injury or adverse health effect resulting from the unintended discharge or operational failure of a gas, air, or spring-powered firearm, excluding BB guns, during a follow-up visit. This indicates the patient is receiving ongoing care for an injury sustained from such an incident.

Apply this code when documenting subsequent encounters for patients being treated for injuries caused by the accidental malfunction of air rifles, pellet guns, or other non-powder firearms. This includes follow-up appointments for wound care, physical therapy, or monitoring of complications related to the initial injury.

• Ensure the encounter is indeed "subsequent" and not the initial treatment for the injury.
• Confirm the injury was due to a malfunction of the gun, not intentional discharge or misuse.
• Always code the specific injury first, followed by this external cause code.