CPT® Code 26540

The procedure described by CPT® Code 26540 involves the surgical repair of the collateral ligament located at either the metacarpophalangeal (MCP) joint or the interphalangeal (IP) joint. The collateral ligaments are critical structures that provide stability to these joints, and their injury can result from traumatic events such as lacerations or ruptures. In cases where an open wound is present, the surgical approach includes exploration of the wound, removal of any devitalized tissue, and extraction of foreign materials to ensure a clean surgical field. For closed injuries, a surgical incision is made on the volar aspect of the MCP joint, allowing access to the underlying structures. The procedure requires careful identification and protection of neurovascular bundles to prevent damage during the repair process. The injured collateral ligament is then exposed, and if it has been completely severed, it is meticulously repaired using sutures. In instances where the ligament has ruptured at its bony attachment, reattachment is performed using pins or bone anchors to restore its function. For injuries at the IP joint, a dorsal incision is utilized, and similar repair techniques are employed to ensure the integrity of the ligament and joint stability. The final step involves closing the surgical wound in layers to promote optimal healing and recovery.