This class contains information about the patient's use of a manufacturers coupon to reduce the patient's out-of-pocket cost for the prescription. "A coupon is used to reduce the patient out of pocket prescription cost – by either reducing the cost of a cash prescription or the patient financial responsibility from a Third Party payer who allows coupon usage. The coupon processor is the LAST payer. (Note: Some Federal and State programs do not allow the reduction of patient’s financial responsibility.) When a customer has a coupon, the Usual And Customary Charge field is not reduced by the amount of the coupon." - NCPDP Telecommunication D.6, Coupon Segment.