Ind. Code § 27-13-38-7
(b) A health maintenance organization shall not remove a prescription drug from the health maintenance organization's formulary, change the cost sharing requirements that apply to a prescription drug, or change the utilization review program requirements that apply to a prescription drug unless that health maintenance organization does at least one (1) of the following:
(2) At the time an enrollee 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 enrollee:
As added by P.L.19-2016, SEC.6.