CPT® Code 23100

The glenohumeral joint, commonly referred to as the shoulder joint, is a critical component of the shoulder complex, which consists of three primary joints: the glenohumeral joint, the sternoclavicular joint, and the acromioclavicular joint. The glenohumeral joint is characterized as a shallow ball-and-socket joint, formed by the articulation of the glenoid fossa of the scapula and the head of the humerus. This joint allows for a wide range of motion in the shoulder, making it essential for various upper limb activities. The procedure described by CPT® Code 23100 involves an arthrotomy of the glenohumeral joint, which includes an open biopsy. During this procedure, a surgical incision is made over the deltoid and pectoral muscles to access the joint. The muscles are carefully divided, and the subscapularis tendon is split to reveal the joint capsule. Once the capsule is incised, the surgeon can explore the joint for any signs of disease, injury, or abnormalities. Tissue samples are collected from the joint cavity for further laboratory analysis, which is crucial for diagnosing potential conditions affecting the joint. After the exploration and biopsy are completed, the incisions are meticulously closed, and a dressing is applied to promote healing.