To define the periods and charges being billed
Code defining periods.
G6401 and G6402 are used specifically to define billing periods.
Total number of periods.
Rate at which the special charge is determined expressed in the standard monetary denomination for the currency specified.
For a line item: freight or special charge; for the total invoice: the total charges -- expressed in the standard monetary denomination for the currency specified.
Code identifying type of special charge or allowance.
