Verizon IndyCar Series driver Carlos Huertas has been ruled out of the 99th Indianapolis 500 with an inner-ear condition, according to Dr. Terry Trammell, IndyCar medical consultant.

Huertas will have to undergo further evaluation before being cleared to return to Verizon IndyCar Series competition. The 23-year-old Colombian is out for the remainder of Indianapolis 500 on-track activities, including Friday's Coors Light Carb Day practice and the May 24 race.

Huertas was scheduled to start on the outside of row six in the No. 18 Dale Coyne Racing Honda. The team will announce Huertas' replacement and the car will be moved to the last row of the 33-car field. It will start 32nd based on entrant points, according to the rulebook.

Huertas, 23, was hoping to make his second career start in the Indianapolis 500. He finished 17th in the 2014 race. He has started 21 career IndyCar races and has one career victory (2014, Houston).