CPT® Code 20501

Injection of sinus tract, designated by CPT® Code 20501, refers to a diagnostic procedure known as a sinogram. This procedure is primarily utilized to assess sinus tracts within the musculoskeletal system, which often arise due to complications from puncture wounds that become infected or as a result of osteomyelitis following injuries such as open fractures or surgical interventions. During the diagnostic process, a sterile catheter is carefully inserted into the sinus tract. This insertion is performed under radiographic supervision, which is a separate reportable service. The key objective of this procedure is to inject a contrast material into the sinus tract, allowing for radiographic imaging to visualize and evaluate the size and location of the sinus tract. This diagnostic approach is crucial for determining the appropriate treatment plan and understanding the underlying issues associated with the sinus tract.