Iowa Code § 514D.6
Notwithstanding section 514A.3, subsection 1, paragraph "b", subparagraph 2, or any contrary provision of chapter 514, if the issuer of the policy of accident and sickness insurance or subscriber contract elects to use a simplified application form, with or without a question as to the applicant's health at the time of application, but without any questions concerning the insured's health history or medical treatment history, the policy or contract must cover any loss occurring after twelve months from the date of issue of the policy or contract from any preexisting condition not specifically excluded from coverage by terms of the policy or contract, and, except as so provided, the policy or contract shall not include wording that would permit a defense based upon preexisting conditions.
Iowa Code § 514D.6