Indiana Code Title 27. Insurance § 27-1-49-11

Sec. 11. (a) In complying with the requirements of this chapter, an insurer or an insurer's agent may not publish or otherwise reveal information regarding the actual amount of rebates the insurer receives on a product, manufacturer, or pharmacy specific basis.  This information is protected as a trade secret (as defined in IC 24-2-3-2) and may not be published or otherwise disclosed directly or indirectly.

(b) An insurer shall impose the confidentiality requirements of this section on any vendor or third party that performs health care or administrative services on behalf of the insurer and that may receive or have access to rebate information.