A covered entity or pharmacy benefits manager shall not charge a pharmacist or a pharmacy a fee related to a claim unless it is apparent at the time of claim processing and is reported on the remittance advice of an adjudicated claim. This section does not prohibit a covered entity or pharmacy benefits manager from entering into an agreement with a pharmacy or pharmacist which includes prospective performance-based incentives and increases payment to pharmacies or pharmacists.
T.C.A. § 56-7-3115