Ind. Code § 5-10-8-18
(c) A state employee health plan shall not remove a prescription drug from the state employee health plan's formulary, change the cost sharing requirements that apply to a prescription drug, or change the utilization review requirements that apply to a prescription drug unless the state employee health plan does at least one (1) of the following:
(2) At the time a covered individual for whom the prescription drug has been prescribed during the preceding twelve (12) month period requests a refill of the prescription drug, provide to the covered individual:
As added by P.L.19-2016, SEC.2.