CPT® Code 29800

An arthroscopy of the temporomandibular joint (TMJ) is a minimally invasive surgical procedure that allows for the examination and potential treatment of disorders affecting the TMJ. This joint, which connects the jawbone to the skull, can be subject to various structural issues that may lead to pain, dysfunction, or other symptoms. The procedure is performed using small incisions and specialized instruments, including an arthroscope, which is a thin tube equipped with a camera that provides visual access to the joint. The common language description outlines the process of marking entry points for the procedure, which are based on anatomical landmarks such as the posterior border of the tragus of the ear and the lateral canthus of the eye. The procedure begins with the insertion of a needle to access the joint space, followed by the introduction of a trocar and cannula to facilitate the insertion of the arthroscope. During the diagnostic phase, the TMJ is carefully examined for signs of injury or disease, including conditions like fibrous adhesions, floating debris, or disc displacement. If necessary, synovial tissue samples may be collected for laboratory analysis to further assess the joint's condition. This procedure is classified as a separate procedure, meaning it is performed independently and may not be bundled with other surgical interventions unless specified. The diagnostic nature of CPT® Code 29800 emphasizes its role in identifying issues within the TMJ, which can inform subsequent treatment options.