What does cpt code 72040 MEAN?

CPT code 72040 stands for "Arthroscopy, knee, with synovectomy, partial or complete." This code is used to report the surgical procedure of removing all or part of the synovium, which is the lining of the knee joint. This procedure is typically performed to treat conditions such as synovitis (inflammation of the synovium), rheumatoid arthritis, and osteoarthritis.