CPT® Code 27310

The procedure described by CPT® Code 27310 refers to an arthrotomy of the knee, which is a surgical intervention involving a skin incision made over the knee joint. This procedure is performed to explore the joint, drain any accumulated fluid, or remove foreign bodies, particularly in cases where an infection is present. The term 'arthrotomy' specifically denotes the surgical opening of a joint, allowing for direct access to the internal structures of the knee. During the procedure, the surgeon dissects through the surrounding tissues to expose the joint capsule, which is then opened to facilitate exploration of the knee joint itself. If an infection is identified, the surgeon will drain fluid that may contain blood and pus, which is indicative of an infectious process. Additionally, cultures are obtained from the joint fluid for laboratory analysis, which is essential for identifying the causative organism and guiding appropriate treatment. The knee joint is thoroughly flushed with saline solution to clear any debris and ensure a clean environment for healing. Any foreign bodies present within the joint are carefully located and removed. After the necessary interventions, the knee is flushed again with saline to ensure all contaminants are cleared. Depending on the extent of the procedure and the condition of the joint, drains may be placed to facilitate fluid drainage post-operatively. Finally, the incision is closed in layers around the drain, and a dressing is applied to protect the surgical site during the recovery process.