One of our surgeons did a nerve repair using an allograft nerve and I cannot find a repair code that corresponds with this procedure. 64910 states repair with synthetic conduit or vein allograft, but it was a nerve allograft, not a vein allograft. I am wondering, do we need to use an unlisted procedure (64999), or does anyone have a better suggestion? Thank you so much for any ideas / suggestions you might have.