CPT® Code 51600

The CPT® Code 51600 refers to an injection procedure specifically designed for cystography or voiding urethrocystography. This procedure involves the instillation of contrast media into the bladder, utilizing a method that is distinct from the traditional retrograde injection technique. For instance, in cases where a patient has a suprapubic catheter in place, the contrast media is introduced through this existing catheter rather than through the urethra. The primary purpose of this procedure is to visualize the bladder and urethra during imaging studies. In cystography, radiographs are taken of the bladder as it is progressively filled with the contrast agent, allowing for the identification of any abnormalities in the bladder's filling pattern. Conversely, during voiding cystourethrography, radiographs are captured both while the bladder is being filled and as it is being emptied, providing a comprehensive view of the bladder and urethra's function and structure. This procedure is essential for diagnosing various urological conditions and assessing the anatomy and function of the urinary tract.