Versions of Iowa Code 335.22 - Precedence on LawServer 2023 Iowa Code 335.22 – Precedence 2022 Iowa Code 335.22 – Precedence 2020 Iowa Code 335.22 – Precedence 2018 Iowa Code 335.22 – Precedence 2016 Iowa Code 335.22 – Precedence 2014 Iowa Code 335.22 – Precedence. 2009 Iowa Code 335.22 – Precedence