Trip leg

The leg is the smallest piece of a ride with a start and an end. Minnesota’s MHCP manual defines a trip, or trip leg, as moving the member from the pickup location to the drop-off location, and names it the unit of billing. Its own illustration: a member carried from point A to a provider at point B, on to a second provider at point C, and back to A has ridden three legs, possibly with more than one transportation provider¹.

Legs matter because the rules that touch a claim apply leg by leg. CMS’s NEMT booklet lists what every state expects in the trip record at minimum: the member’s name and Medicaid ID, the pickup and drop-off locations, the date and time of service, and the miles traveled with the member aboard². Each of those belongs to a leg, not to the day, so the mileage on a claim should equal the sum of the loaded miles on the legs it covers.

Most leg errors come from merging or splitting them the wrong way. A return leg that never happened, because the member cancelled or did not show, is not billable; Illinois lists no-show trips among the services it will not pay³. A stop at a place that is not medical is not a covered leg either, and CMS’s booklet tells providers not to bill trips to destinations such as a grocery store or a shopping mall². When two riders share the vehicle, the program’s shared-ride rule decides whose leg carries the miles: Illinois takes a claim for each rider but pays mileage only on the first rider collected³.