Versions of Iowa Code 679A.18 - Chapter not retroactive on LawServer 2023 Iowa Code 679A.18 – Chapter not retroactive 2022 Iowa Code 679A.18 – Chapter not retroactive 2020 Iowa Code 679A.18 – Chapter not retroactive 2018 Iowa Code 679A.18 – Chapter not retroactive 2016 Iowa Code 679A.18 – Chapter not retroactive 2014 Iowa Code 679A.18 – Chapter not retroactive. 2009 Iowa Code 679A.18 – Chapter not retroactive