N.Y. Comp. Codes R. & Regs. tit. 12 § 346.5
In cases where the chiropractor prescribes a back belt or support for a claimant, the chiropractor shall notify the employer or carrier of the need for such belt or support and direct the claimant to the employer or carrier for the purpose of securing from said employer or carrier authorization for the purchase of such belt or support before the same is furnished to the claimant by the supplier. Such belt or support also may be furnished by the chiropractor who is in charge of the case or by a chiropractor who is not in charge of the case upon certification of need by the attending chiropractor by the physician having supervision of the case. If the belt or support is furnished by a chiropractor who is not in charge of the case, neither the chiropractor or physician in charge of the case nor the chiropractor furnishing the belt or support shall directly or indirectly request, receive or participate in the division, transference, assignment, rebating, splitting or refunding of the fee or price for, or directly or indirectly request, receive or profit by means of a credit or other valuable consideration as a commission, discount or gratuity in connection with the furnishing of, such belt or support.
N.Y. Comp. Codes R. & Regs. Tit. 12 § 346.5