Burn due to merchant ship on fire, subsequent encounter

This diagnosis code signifies a burn injury sustained by an individual due to a fire occurring on a merchant ship. It specifically indicates that this is not the initial treatment for the burn, but rather a follow-up visit or subsequent phase of care. The injury is directly attributable to the maritime vessel fire.

This code is appropriate for documenting subsequent encounters for patients who have previously been treated for burns sustained during a fire on a merchant ship. This includes follow-up appointments for wound care, infection management, skin grafting procedures, or rehabilitation related to the initial burn injury. It should be used after the initial acute care for the burn has been rendered.

• Ensure documentation clearly states the burn occurred on a merchant ship and that this is a subsequent encounter.
• Always code the specific burn site and degree (e.g., T20-T25 for trunk, upper limb, lower limb burns) as primary diagnoses, with this external cause code as a secondary code.
• Verify that the encounter is indeed "subsequent" and not the initial treatment for the burn.