CPT® Code 26841

Arthrodesis of the carpometacarpal (CMC) joint of the thumb, designated by CPT® Code 26841, is a surgical procedure aimed at fusing the CMC joint to alleviate pain and restore stability, particularly in cases of arthritis or joint instability. The CMC joint is crucial for thumb function, allowing for a range of motion necessary for grasping and pinching. During the procedure, a surgical incision is made on the lateral side of the thumb, providing access to the joint. The joint capsule is then incised to expose the joint surfaces, which are carefully inspected. The articular cartilage, which can be damaged in arthritic conditions, is excised from both the metacarpal base and the trapezium bone. To ensure proper alignment and fit, the trapezium is smoothed and reshaped using a bur. This meticulous preparation is essential for achieving a successful fusion. In some cases, internal fixation devices, such as pins or wires, may be utilized to maintain the thumb in the correct position during the healing process. After the joint surfaces are prepared and any necessary fixation is applied, the soft tissues are repaired in layers, and a short arm cast is placed to support the thumb as it heals. This procedure is particularly beneficial for patients suffering from debilitating pain and loss of function due to joint degeneration or instability.