Prsn brd/alit a car injured in collision w car, subs

This code signifies an injury sustained by an individual who was in the process of entering or exiting a car when that car was involved in a collision with another type of car. The "subsequent encounter" designation indicates that this code is used for follow-up care after the initial injury has been treated.

Use this code for patients presenting for ongoing management, rehabilitation, or evaluation of complications related to injuries sustained while boarding or alighting a car during a multi-vehicle collision. This includes scenarios like physical therapy for a sprained ankle or follow-up for a concussion from such an incident.

• Always ensure the encounter is for follow-up care, not the initial treatment.
• Verify the patient's role as "boarding or alighting" and the type of collision involved (car with other type car).
• Pair this external cause code with an injury code (e.g., fracture, sprain) to fully describe the patient's condition.