Iowa Admin. Code r. 191-35.31
All carriers shall include in contracts and evidence of coverage forms a statement disclosing the existence of any prescription drug formularies. Upon request, all carriers offering health insurance coverage that includes a prescription drug formulary shall inform enrollees of the coverage, and prospective enrollees of the coverage during any open enrollment period, whether a prescription drug specified in the request is included in such formulary.
All carriers shall also disclose the existence of any contractual arrangements providing rebates received by them for prescription drugs or durable medical equipment. Durable medical equipment means equipment that can stand repeated use and is primarily and customarily used to serve a medical purpose and is generally not useful to a person who is not sick or injured or used by other family members and is appropriate for home use for the purpose of improving bodily functions or preventing further deterioration of the medical condition caused by sickness or injury.
Iowa Admin. Code r. 191-35.31