20 CFR § 30.709 - How are payments for medicinal drugs determined?
Unless otherwise specified by OWCP, payment for medicinal drugs prescribed by physicians shall not exceed the amount derived by multiplying the average wholesale price of the medication by the quantity or amount provided, plus a dispensing fee. OWCP may, in its discretion, contract for or require the use of specific providers for certain medications.
(a) All prescription medications identified by NDC number will be assigned an average wholesale price representing the product's nationally recognized wholesale price as determined by surveys of manufacturers and wholesalers. OWCP will establish the dispensing fee, which will not be affected by the location or type of provider dispensing the medication.
(b) The NDC numbers, the average wholesale prices, and the dispensing fee shall be reviewed from time to time and updated as necessary.
(c) With respect to prescribed medications, OWCP may require the use of generic equivalents where they are available.