Prsn brd/alit hv veh inj in clsn w hv veh wh brd/alit, sqla

This code signifies a long-term health condition or complication resulting from an injury sustained by an individual who was in the process of getting on or off a large transport vehicle (like a truck or bus) when it was involved in a collision with another heavy transport vehicle or bus. The injury itself occurred during the boarding or alighting action.

Use this code when documenting a sequela (e.g., chronic pain, permanent disability, scar tissue) directly attributable to an injury that occurred while a person was boarding or alighting a heavy transport vehicle during a collision with another heavy transport vehicle or bus. This code is appropriate for follow-up encounters addressing these persistent effects, long after the initial injury has healed.

• Ensure the documentation clearly links the current condition to the original injury event and specifies the "sequela" nature.
• Verify that the original injury occurred during the act of boarding or alighting a heavy transport vehicle involved in a collision with another heavy transport vehicle or bus.
• Always code the specific nature of the sequela (e.g., chronic pain, fracture nonunion) first, followed by this external cause code.