73520: Understanding the Medical Billing Code for AC Joint Arthrotomy

73520 is the medical billing code for "Arthrotomy of acromioclavicular (AC) joint; with decompression of subacromial space." This code is used to describe the surgical procedure of opening the AC joint and releasing the pressure in the subacromial space. This procedure is typically performed to treat conditions such as shoulder impingement and rotator cuff tears.