CPT® Code 25085

The CPT® Code 25085 refers to a surgical procedure known as capsulotomy of the wrist, which is typically performed to address contractures or other conditions affecting the wrist joint. In this procedure, a longitudinal midline incision or a horizontal incision is made over the dorsal aspect of the wrist, chosen based on the specific site of the pathology being treated. The surgeon carefully develops full thickness skin flaps down to the extensor retinaculum, ensuring the protection of critical structures such as the superficial radial nerve, the dorsal sensory branch of the ulnar nerve, and various blood vessels that are located in this area. The extensor retinaculum, which is a fibrous band that holds the tendons of the wrist in place, is incised longitudinally over the third dorsal compartment to gain access to the underlying structures. Depending on the area that requires exposure, additional steps may involve retracting the extensor pollicis longus muscle or elevating the fourth extensor compartment to facilitate access to the ulnar aspect of the wrist. Conversely, if the radial aspect needs to be accessed, the extensor retinaculum is elevated off Lister's tubercle, and the second dorsal compartment is released. The procedure may also involve incising specific ligaments, such as the dorsal radioulnar ligament for ulnar capsulotomy or the dorsal radiocarpal and intercarpal ligaments for radial capsulotomy, in alignment with their fibers. Ultimately, the wrist capsule is incised, and any adhesions present are released to restore mobility. The surgical wound is then meticulously closed in layers to promote healing and minimize complications.