Versions of Iowa Code 537.3604 - General definitions on LawServer 2023 Iowa Code 537.3604 – General definitions 2022 Iowa Code 537.3604 – General definitions 2020 Iowa Code 537.3604 – General definitions 2018 Iowa Code 537.3604 – General definitions 2016 Iowa Code 537.3604 – General definitions 2014 Iowa Code 537.3604 – General definitions. 2009 Iowa Code 537.3604 – General definitions