Versions of Iowa Code 12D.1 - Purpose and definitions on LawServer 2023 Iowa Code 12D.1 – Purpose and definitions 2022 Iowa Code 12D.1 – Purpose and definitions 2020 Iowa Code 12D.1 – Purpose and definitions 2018 Iowa Code 12D.1 – Purpose and definitions 2016 Iowa Code 12D.1 – Purpose and definitions 2014 Iowa Code 12D.1 – Purpose and definitions. 2009 Iowa Code 12D.1 – Purpose and definitions