CPT® Code 29907

The procedure described by CPT® Code 29907 refers to an arthroscopic surgical intervention performed on the subtalar joint, which is located in the lower ankle between the talus and the calcaneus bones. This joint is classified as a compound joint and is divided into two distinct compartments, separated by a space that contains the talocalcaneal and cervical ligaments. The primary goal of this procedure is to perform a subtalar arthrodesis, which involves fusing the subtalar joint to alleviate pain and restore function. During the surgery, the joint is first distracted to create space between the joint surfaces, allowing for better visualization and access. Multiple portals are established to facilitate the examination and treatment of the joint. The procedure includes the removal of abnormal cartilage and preparation of the bone surfaces to ensure they are in full contact, which is essential for successful fusion. Stabilization of the bones is achieved using temporary fixation devices, and if necessary, allografting may be employed to assist in the fusion process. The final steps involve irrigating the joint to clear debris, removing the arthroscope, and positioning the foot appropriately to promote optimal healing.