Iowa Code § 515D.12
There shall be no liability on the part of, and no cause of action of any nature shall arise against the commissioner of insurance or any employee of the division or against any insurer, its authorized representatives, its agents, its employees, or against any firm, person, or corporation furnishing to the insurer information as to reasons for cancellation or intent not to renew, for any statement made by any of them in any written notice of cancellation or notice of intent not to renew or in any other communication, oral or written, specifying the reasons for cancellation or intent not to renew, or for any information provided or evidence submitted at any hearings conducted in connection with reasons for cancellation or intent not to renew.
Iowa Code § 515D.12