Pedestrian on foot injured in collision w hv veh, unsp, subs

This code signifies a patient's follow-up care for injuries sustained as a pedestrian struck by a large commercial vehicle or bus. The initial incident's location (traffic or non-traffic) was not documented or is unknown.

Apply this code for any subsequent visits related to the initial pedestrian-heavy transport vehicle collision, such as follow-up appointments for fracture management, wound care, physical therapy, or medication refills. This includes situations where the initial encounter code (V04.90XA) was used, and the patient is returning for ongoing treatment.

• Ensure the encounter is truly "subsequent" and not the initial treatment for the injury.
• Always code the specific injuries sustained by the pedestrian in addition to this external cause code.
• Only use this code when the traffic/nontraffic nature of the accident is unspecified or unknown in the documentation.