(1) A group policy or contract providing for third-party payment or prepayment for prescription drugs may designate an affiliated mail order pharmacy or other specific pharmacy but it shall not require a person covered under the policy or contract to obtain prescription drugs from the mail order pharmacy or any specifically designated pharmacy, nor shall it set forth provisions for the payment of additional fees or deductibles by the covered person as a condition of obtaining benefits for prescription drugs if a registered pharmacy selected by the covered person agrees to provide pharmaceutical services under the same terms and conditions as those provided by said mail order pharmacy or specifically designated pharmacy.
(2)  Group policy or contracts providing for third-party payment or for prescription drugs delivered, issued for delivery, continued, or renewed in this state on or after July 1, 1991, are subject to the provisions of this section.