Versions of Iowa Code 552.18 - Waiver of provisions on LawServer 2023 Iowa Code 552.18 – Waiver of provisions 2022 Iowa Code 552.18 – Waiver of provisions 2020 Iowa Code 552.18 – Waiver of provisions 2018 Iowa Code 552.18 – Waiver of provisions 2016 Iowa Code 552.18 – Waiver of provisions 2014 Iowa Code 552.18 – Waiver of provisions. 2009 Iowa Code 552.18 – Waiver of provisions