Section 414.104 - PEN Items and Services(a)Payment rules. Payment for PEN items and services is made in a lump sum for nutrients and supplies that are purchased and on a monthly basis for equipment that is rented.(b)Fee schedule amount. The fee schedule amount for payment for an item or service furnished in 2002 is the lesser of- (i) The reasonable charge from 1995; or(ii) The reasonable charge that would have been used in determining payment for 2002.