Versions of Iowa Code 1.6 - Approval required on LawServer 2024 Iowa Code 1.6 – Approval required 2023 Iowa Code 1.6 – Approval required 2022 Iowa Code 1.6 – Approval required 2020 Iowa Code 1.6 – Approval required 2018 Iowa Code 1.6 – Approval required 2016 Iowa Code 1.6 – Approval required 2014 Iowa Code 1.6 – Approval required. 2009 Iowa Code 1.6 – Approval required