CPT® Code 36620

Arterial catheterization or cannulation is a medical procedure that involves the insertion of a catheter into an artery for various purposes, including sampling, monitoring, or transfusion of blood. This procedure is essential in clinical settings for obtaining arterial blood samples, which are crucial for blood gas analysis, monitoring blood pressure in critically ill patients, and facilitating blood transfusions. The radial artery is the most frequently used site for this procedure due to its accessibility and ease of use; however, alternative sites such as the axillary and femoral arteries may also be utilized depending on the clinical scenario and patient condition. The process begins with the selection of the appropriate insertion site, followed by the preparation of the skin to ensure a sterile environment. A local anesthetic is administered to minimize discomfort during the procedure. The Seldinger technique is commonly employed, which involves puncturing the skin and the artery with a needle. In some cases, a cutdown technique may be used, where an incision is made over the artery to expose it before puncturing. After the initial puncture, a guidewire is inserted through the needle and advanced into the artery, allowing for the placement of an introducer sheath and dilator. Once the catheter is positioned correctly within the artery, its placement may be verified through imaging techniques, if necessary. Finally, the catheter or cannula is secured in place with tape, and a dressing is applied to protect the insertion site. This procedure is coded using CPT® Code 36620 for percutaneous insertion, while CPT® Code 36625 is designated for the cutdown approach.