CPT® Code 73050

A radiologic examination of the acromioclavicular (AC) joints is performed bilaterally, meaning that both the left and right joints are imaged during the procedure. This examination utilizes X-ray imaging, which employs indirect ionizing radiation to create detailed pictures of the internal structures of the body. The principle behind X-ray imaging is based on the varying densities and compositions of different materials, such as human tissues. When X-rays are directed towards the body, some rays are absorbed by denser materials, while others pass through and are captured on a detector, resulting in a two-dimensional image that reveals the anatomical structures of the AC joints. The AC joints, located where the collarbone meets the highest point of the shoulder blade, are critical for shoulder stability and movement. Injuries to these joints can be effectively assessed using standard anteroposterior (AP) views, which provide a clear perspective of the joint's condition. In a bilateral examination, a comparison view is also taken of the opposite shoulder to aid in diagnosis. The AP view is typically captured with the patient's head inclined approximately 15 degrees along the spine of the scapula, optimizing the imaging angle for better visualization of the joint. Historically, stress or weighted images were utilized to differentiate between partial and complete ligamentous tears in the AC joint. However, current medical practice has shifted towards nonsurgical treatment for both types of tears, leading to a decline in the use of weighted distraction images. As a result, these images are now largely considered obsolete in contemporary diagnostic procedures for AC joint injuries.