Question: One of the surgeons in my practice coded an Akin procedure as 28310, but CPT lists it as 28298. Which code is correct? Answer: According to the Wheeless' Textbook of Orthopaedics, an Akin procedure is a closing wedge osteotomy of the first toe (hallux) proximal phalanx with excision of the medial eminence. It is performed to correct the condition hallux valgus (735.0), where the deformity is located at the interphalangeal joint. Code 28298 (Lapidus type procedure; by phalanx osteotomy) describes this procedure.