CPT® Code 64488

Transversus abdominis plane (TAP) block (abdominal plane block, rectus sheath block) bilateral; by injections (includes imaging guidance, when performed)

The transversus abdominis plane (TAP) block is a regional anesthesia technique that targets the nerves supplying the anterior abdominal wall, specifically at the spinal levels of T6 to L1. This procedure is primarily utilized to manage postoperative pain in patients undergoing abdominal surgeries. By delivering anesthesia to the area, the TAP block serves as an adjunct therapy, enhancing pain control and potentially reducing the need for systemic opioids. The TAP block can be administered at various stages of the surgical process, including preoperatively, intraoperatively, or postoperatively, depending on the clinical scenario and the surgeon's preference. In cases where the surgical incision is positioned laterally, a unilateral TAP block is often preferred, as it effectively numbs the nerves on one side of the abdomen. Conversely, when the incision is made along the midline, a bilateral TAP block is indicated to ensure adequate pain relief on both sides. The procedure typically involves the injection of a long-acting local anesthetic, such as bupivacaine, which can provide significant pain relief for an extended duration—up to 36 hours for a single injection and potentially longer with continuous infusion techniques. Ultrasound guidance is frequently employed during the TAP block procedure, allowing for precise visualization of the anatomical structures involved, including the layers of muscle and fascia. This imaging technique enhances the accuracy of needle placement and the effectiveness of the anesthetic delivery. Overall, the TAP block is a valuable tool in the management of postoperative pain, contributing to improved patient comfort and recovery outcomes following abdominal surgery.