Occup of hv veh injured in collision w unsp mv in traf, subs

This code signifies an injury sustained by an unspecified occupant of a heavy transport vehicle (e.g., truck, bus) involved in a traffic collision with another unspecified motor vehicle. The "XD" suffix indicates this is a subsequent encounter for the initial injury, meaning the patient is receiving routine care during the healing phase.

Utilize this code for follow-up visits, cast changes, or medication refills related to injuries sustained in the described motor vehicle accident. This is appropriate when the specific type of heavy transport vehicle, the specific type of other motor vehicle, and the occupant's role (driver/passenger) are not documented.

• Ensure the encounter is truly "subsequent" for the injury; use initial encounter codes for the first visit.
• Always seek more specific codes if the type of heavy transport vehicle, other vehicle, or occupant status is documented.
• Pair this external cause code with the specific injury code(s) (e.g., fracture, sprain) and place of occurrence code.