CPT® Code 26420

Injuries to the extensor tendons of the fingers can manifest as partial or complete lacerations, tears, or ruptures. These injuries often necessitate surgical intervention to restore function and mobility to the affected finger. The procedure described by CPT® Code 26420 involves the repair of an extensor tendon in the finger, utilizing a free graft. This means that a piece of tendon is harvested from another part of the body, such as the forearm or leg, to replace the damaged tendon. The repair can be classified as either primary or secondary; primary repair is typically performed within 24 hours of the injury, while secondary repair is conducted more than two weeks post-injury. The surgical approach involves exposing the tendon through a dorsal incision, carefully dissecting the surrounding soft tissues while protecting vital neurovascular structures. Once the severed ends of the tendon are located, the graft is attached to the affected extensor muscle and tunneled to the injury site, where it is secured with sutures. This procedure is critical for restoring the function of the finger and ensuring proper healing of the tendon.