CPT® Code 20555

Placement of needles or catheters into muscle and/or soft tissue for subsequent interstitial radioelement application (at the time of or subsequent to the procedure)

The CPT® Code 20555 refers to the procedure involving the placement of needles or catheters into muscle and/or soft tissue, specifically for the purpose of subsequent interstitial radioelement application. This procedure is essential in the context of brachytherapy, where radioactive materials are delivered directly to the site of a tumor or lesion. The placement of these needles or catheters can occur either concurrently with another surgical procedure, such as the removal of a mass or tumor, or as a standalone intervention. It is important to note that this code exclusively covers the act of placing the needles or catheters; the actual application of the interstitial radioelements is reported separately under a different code. During this procedure, careful attention is given to marking the tumor margins within the muscle and/or soft tissue, as well as identifying the specific sites for needle or catheter insertion. The process typically begins with the introduction of a needle through a designated entrance site, followed by the placement of a catheter through the needle. This method ensures precise positioning of the catheter, which is then secured in place before the needle is withdrawn through a predetermined exit site. This sequence is repeated until all necessary catheters are successfully positioned. Additionally, drains with multiple drainage holes may be utilized, placed perpendicular to the catheters, allowing for effective drainage while each catheter is threaded through a designated hole. Finally, the stiff leader portion of the catheter is removed, and a dressing is applied to complete the procedure.