Milt op involving explosn of unsp marine weapon, milt, subs

This code signifies an injury sustained by military personnel due to the detonation of an unidentified marine weapon during military operations. It specifically indicates that the patient is presenting for follow-up care, rehabilitation, or management of complications related to the initial injury.

Apply this code for subsequent encounters when a service member is being treated for injuries (e.g., blast trauma, shrapnel wounds, hearing loss, PTSD) resulting from an explosion of an unspecified marine weapon during active military duty. This includes follow-up appointments, physical therapy, or mental health evaluations after the initial acute care.

• Ensure documentation clearly states the patient is military personnel and the injury occurred during military operations.
• Verify the encounter is for subsequent care, not the initial treatment of the injury.
• Always code the specific nature of the injury (e.g., T75.4XXA for effects of marine pressure) in addition to this external cause code.