[§431R-3] Prescription drugs; beneficiary choice; mail order opt out. (a) If a retail community pharmacy enters into a contractual retail pharmacy network agreement pursuant to section 431R-2, a prescription drug benefit plan, health benefits plan under chapter 87A, or pharmacy benefit manager shall permit each beneficiary, at the beneficiary's option, to fill any covered prescription that may be obtained by mail order at any retail community pharmacy of the beneficiary's choice within the pharmacy benefit manager's retail pharmacy network.
(b) A prescription drug benefit plan, health benefits plan under chapter 87A, or pharmacy benefit manager who has entered into a contractual retail pharmacy network agreement with a retail community pharmacy shall not: