Versions of Iowa Code 138.12 - Variations permitted on LawServer 2023 Iowa Code 138.12 – Variations permitted 2022 Iowa Code 138.12 – Variations permitted 2020 Iowa Code 138.12 – Variations permitted 2018 Iowa Code 138.12 – Variations permitted 2016 Iowa Code 138.12 – Variations permitted 2014 Iowa Code 138.12 – Variations permitted. 2009 Iowa Code 138.12 – Variations permitted