CPT® Code 26412

The procedure described by CPT® Code 26412 involves the repair of an extensor tendon in the hand, utilizing a free graft. Extensor tendons are crucial for the extension of fingers and the wrist, and injuries to these tendons can result in significant functional impairment. Such injuries may manifest as partial or complete lacerations, tears, or ruptures, which can occur due to trauma or other mechanical forces. The timing of the repair is critical; primary repairs are ideally conducted within 24 hours of the injury to optimize healing and restore function. However, in cases where the wound is grossly contaminated, the primary repair may be postponed for up to two weeks to ensure a cleaner surgical field. Secondary repairs, on the other hand, are indicated when the surgical intervention occurs more than two weeks post-injury. The surgical approach typically involves a dorsal incision to expose the tendon, with careful dissection of surrounding soft tissues to protect vital neurovascular structures. The surgeon locates the distal and proximal ends of the severed tendon, which may necessitate an additional incision if the proximal end has retracted beyond reach. In the context of CPT® Code 26412, the procedure specifically entails the use of a free graft, which is harvested from either the forearm or leg. This graft is then meticulously attached to the affected extensor muscle and tunneled to the injury site, where it is secured with sutures, facilitating the restoration of tendon continuity and function.