CPT® Code 20500

Injection of sinus tract, as described by CPT® Code 20500, refers to a therapeutic procedure aimed at addressing sinus tracts that may arise in the musculoskeletal system. These sinus tracts often develop as a consequence of an infection stemming from a puncture wound, or they may occur due to osteomyelitis, which is an infection of the bone that can follow an injury such as an open fracture or a surgical intervention. During this procedure, a sterile catheter is carefully inserted into the sinus tract and advanced until it meets resistance, indicating the end of the tract. To facilitate the treatment, sterile saline may be injected to cleanse the area by flushing out any accumulated fluid and debris. Following this, an antibiotic or another therapeutic agent is administered through the catheter to effectively treat the underlying infection. This procedure is classified as a separate therapeutic intervention, distinct from the diagnostic procedure identified by CPT® Code 20501, which involves the use of radiographic supervision to assess the sinus tract's characteristics.