Versions of Iowa Code 85A.20 - Investigation on LawServer 2023 Iowa Code 85A.20 – Investigation 2022 Iowa Code 85A.20 – Investigation 2020 Iowa Code 85A.20 – Investigation 2018 Iowa Code 85A.20 – Investigation 2016 Iowa Code 85A.20 – Investigation 2014 Iowa Code 85A.20 – Investigation. 2009 Iowa Code 85A.20 – Investigation