Iowa Code § 147.138: Contingent fee of attorney reviewed by court.

In any action for personal injury or wrongful death against any physician and surgeon, osteopathic physician and surgeon, dentist, podiatric physician, optometrist, pharmacist, chiropractor, physician assistant, or nurse licensed under this chapter or against any hospital licensed under chapter 135B, based upon the alleged negligence of the licensee in the practice of that profession or occupation, or upon the alleged negligence of the hospital in patient care, the court shall determine the reasonableness of any contingent fee arrangement between the plaintiff and the plaintiff’s attorney.