Versions of Iowa Code 535D.4A - Exemptions on LawServer 2024 Iowa Code 535D.4A – Exemptions 2023 Iowa Code 535D.4A – Exemptions 2022 Iowa Code 535D.4A – Exemptions 2020 Iowa Code 535D.4A – Exemptions 2018 Iowa Code 535D.4A – Exemptions 2016 Iowa Code 535D.4A – Exemptions 2014 Iowa Code 535D.4A – Exemptions. 2009 Iowa Code 535D.4A – Exemptions