CPT® Code 23470

A hemiarthroplasty of the glenohumeral joint, designated by CPT® Code 23470, is a surgical procedure that involves the replacement of the humeral head with a prosthetic implant. This procedure is typically indicated for patients with severe shoulder joint damage due to conditions such as osteoarthritis, rheumatoid arthritis, or traumatic injury, where the glenoid (the socket of the shoulder joint) remains intact. Unlike a total shoulder arthroplasty, which involves the replacement of both the humeral head and the glenoid surface, hemiarthroplasty focuses solely on the humeral component. The surgery is performed through a deltopectoral approach, which allows for optimal exposure of the shoulder joint. During the procedure, the surgeon carefully navigates through the deltopectoral interval, identifies the cephalic vein, and retracts the conjoint tendon to access the joint. The subscapularis tendon is incised, and the joint capsule is opened to facilitate the removal of the damaged humeral head and the placement of the prosthetic implant. This procedure aims to alleviate pain and restore function in the shoulder, enabling patients to regain mobility and improve their quality of life.