CPT® Code 29840

Diagnostic arthroscopy of the wrist is a minimally invasive surgical procedure that allows for direct visualization of the wrist joint's internal structures. This procedure can be performed with or without the collection of synovial tissue biopsies. During the procedure, a pneumatic tourniquet is applied to the upper arm to minimize blood flow, which aids in clearer visualization of the joint. The forearm is then positioned in a wrist traction device, and weights are applied to the second and third fingers, creating distraction within the wrist joint. This distraction enhances the surgeon's ability to see the joint structures more clearly. A small incision, referred to as a portal, is made on the posterior aspect of the wrist, through which an arthroscope—a specialized instrument equipped with a camera—is introduced. The camera magnifies the internal view of the wrist and projects it onto a video screen for the surgeon to observe. To further facilitate the examination, another portal incision is made to insert an irrigation cannula, allowing fluid to be introduced into the joint space, which helps to expand it for better visibility. Additional small incisions may be created as necessary to provide different angles of view. The wrist is thoroughly examined for any signs of injury or disease, and if required, biopsies of the synovial tissue are taken for laboratory analysis. Upon completion of the procedure, the wrist is flushed with saline solution, the instruments are carefully removed, and the portal incisions are closed to promote healing.