PROHIBITION ON EXCESSIVE COPAYMENTS OR CHARGES. A carrier or pharmacy benefits manager may not impose on an enrollee a copayment or other charge that exceeds the claim cost of a prescription drug. If information related to an enrollee’s out-of-pocket cost or the clinical efficacy of a prescription drug or alternative medication is available to a pharmacy provider, a carrier or pharmacy benefits manager may not penalize a pharmacy provider for providing that information to an enrollee.