Iowa Code § 636.29
When it is admitted by the pleadings, or shown by the examination of a party, that the party has in the party's possession, or under the party's control, any money or property capable of delivery, which is in any degree the subject of litigation, and which is held by the party as trustee for another party, the court may order the same to be deposited in the office of the clerk, or delivered to such party, with or without security, subject to the further direction of the court; or may order such money to be deposited in a bank, with the consent of the parties in interest, to the credit of the court in which the action is pending, and the same shall be paid out by such bank only upon the check of the clerk, annexed to a certified copy of the order of the court directing such payment.
Iowa Code § 636.29