CPT® Code 27369

The procedure described by CPT® Code 27369 involves the injection of a contrast agent into the knee joint for the purpose of enhancing imaging studies, specifically knee arthrography or contrast-enhanced CT/MRI knee arthrography. Knee arthrography is a diagnostic imaging technique that allows for detailed visualization of the soft tissues within the knee joint, including ligaments, cartilage, and synovial fluid. The process begins with the cleansing of the skin over the injection site to minimize the risk of infection. A local anesthetic is then administered to numb the area, ensuring patient comfort during the procedure. Following this, a needle is carefully inserted into the joint space, typically under the guidance of imaging techniques such as X-ray, ultrasound, or CT, to ensure accurate placement. Once the needle is correctly positioned, a radiopaque contrast agent is injected into the knee joint. This contrast agent is crucial for enhancing the visibility of the joint structures during imaging. The specific type of contrast used may vary depending on the imaging modality; for X-ray-based arthrograms, iodinated contrast is commonly used, while MRI procedures typically utilize a dilute solution of gadolinium chelates mixed with sterile saline. After the contrast is injected, the knee is moved through flexion and extension to facilitate even distribution of the contrast agent within the joint. Finally, radiographic images are obtained to assess the joint's condition, which can provide valuable information for diagnosis and treatment planning.