Screw Removal

A patient had a first metatarsophalangeal joint fusion/arthrodesis performed. Approximately 1 month following the procedure, one of the screws that was used to perform the procedure backed out of the bone and the plate that was applied to the 1st MPJ and started to apply pressure beneath the underlying skin at the site of the surgical incision. The screw needed to be removed. What would be the most appropriate CPT code to bill?