Doctor
Arthroscopy, knee, surgical, for removal of loose body, foreign body, debridement/shaving of articular cartilage (chondroplasty) at the time of other surgical knee arthroscopy in a different compartment of the same knee.
(Arthro, loose body + chondro; CPT G0289)
GPT3
Inside the knee there are compartments. This surgery is for fixing a problem in one compartment by going in through a different compartment.