calcaneal osteotomy

“Need advice on codes and modifiers.... My associate removed painful hardware from a previous Lisfranc dislocation repair (only removed the hardware from the 1st met-cuneiform joint, not the other tarsometatarsal joints), and redid a 1st met - med. cuneiform arthrodesis with new hardware. He also did a sliding calcaneal osteotomy with fixation. He did a 1st proximal phalanx osteotomy. All on the right foot. Highmark insurance in PA was the health insurance carrier.