CPT® Code 64910

Nerve repair using either a synthetic conduit or vein allograft (commonly referred to as a nerve tube) is a surgical procedure performed on a single nerve, as indicated by CPT® Code 64910. This procedure is necessary when nerve function is compromised due to injury, leading to the degeneration of the distal portion of the nerve. While the proximal nerve segment has the potential to regenerate and restore function, a significant gap between the proximal and distal nerve stumps necessitates the insertion of a graft. This graft serves as a bridge, facilitating the growth of regenerating axons from the proximal stump to the distal stump. The procedure can involve the creation of a biological nerve tube allograft derived from human vein or the placement of an artificial conduit designed to guide nerve regeneration. The synthetic tubular nerve guidance conduits are typically constructed from biocompatible polymers, such as poly-L-lactic acid, and are often enhanced with cultured Schwann cells. Schwann cells are critical as they form the myelin sheath that insulates nerve axons, thereby promoting effective nerve signal transmission. The incorporation of these cells into the synthetic conduit creates an environment conducive to nerve regeneration, directing the growth of nerve fibers in a specific orientation. Alternatively, vein grafts can be harvested, inverted, and sutured between the severed nerve ends. This method utilizes the collagen-rich inner layer of the vein wall, which has been shown to support nerve regeneration effectively. As new capillaries develop within the vein graft, neurites from the proximal nerve stump grow into the graft, facilitating the reconnection of the nerve pathway. It is important to note that for nerve repair using an autogenous vein harvested from the patient, CPT® Code 64911 should be reported instead.