Versions of Iowa Code 643.18 - Execution on LawServer 2023 Iowa Code 643.18 – Execution 2022 Iowa Code 643.18 – Execution 2020 Iowa Code 643.18 – Execution 2018 Iowa Code 643.18 – Execution 2016 Iowa Code 643.18 – Execution 2014 Iowa Code 643.18 – Execution. 2009 Iowa Code 643.18 – Execution