CPT® Code 27601

A decompression fasciotomy of the lower leg is a surgical procedure aimed at alleviating the pressure within the muscle compartments of the leg, specifically targeting the posterior compartment(s). The lower leg is anatomically divided into three primary muscle compartments: anterior, lateral, and posterior. Each of these compartments is encased in a tough, fibrous tissue known as fascia, which does not stretch. When conditions such as long bone fractures, crush injuries, or other forms of trauma occur, swelling can develop within these compartments. This swelling leads to increased interstitial pressure, which can compromise blood flow and result in tissue necrosis, ultimately causing permanent functional impairment of the limb if not addressed promptly. The procedure involves making a surgical incision to relieve the pressure and restore normal blood flow to the affected muscles and nerves. In the case of CPT® Code 27601, the focus is specifically on the posterior compartment(s) of the leg. The posterior compartment consists of two sections: the deep and superficial posterior compartments. The surgical approach typically involves a single longitudinal incision along the back of the leg, allowing access to both compartments. By incising the fascia, the surgeon can effectively decompress the area, thereby preventing further tissue damage and promoting recovery. This procedure is critical in managing compartment syndrome and preserving limb function.