Drown d/t being thrown ovrbrd by motion of merch ship, subs

This code signifies an injury or adverse health effect resulting from a previous incident where an individual was thrown overboard from a merchant ship due to its motion, leading to drowning or submersion. It is used when the patient is receiving follow-up care for complications or sequelae directly related to that initial event.

Apply this code for subsequent encounters when a patient presents for ongoing treatment of conditions such as pneumonia, acute respiratory distress syndrome, neurological deficits, or psychological trauma that originated from a drowning or submersion incident caused by being thrown from a moving merchant ship. This includes rehabilitation, medication management, or diagnostic workups related to the initial injury.

• Ensure documentation clearly links the current encounter to the initial drowning/submersion event.
• Always sequence this external cause code after the primary diagnosis describing the patient's current condition.
• Verify the "D" seventh character is appropriate for a subsequent encounter, indicating ongoing care for the injury.