Versions of Iowa Code 321.156 - Audit by department on LawServer 2023 Iowa Code 321.156 – Audit by department 2022 Iowa Code 321.156 – Audit by department 2020 Iowa Code 321.156 – Audit by department 2018 Iowa Code 321.156 – Audit by department 2016 Iowa Code 321.156 – Audit by department 2014 Iowa Code 321.156 – Audit by department. 2009 Iowa Code 321.156 – Audit by department