Versions of Iowa Code 542.19 - Substantial equivalency on LawServer 2023 Iowa Code 542.19 – Substantial equivalency 2022 Iowa Code 542.19 – Substantial equivalency 2020 Iowa Code 542.19 – Substantial equivalency 2018 Iowa Code 542.19 – Substantial equivalency 2016 Iowa Code 542.19 – Substantial equivalency 2014 Iowa Code 542.19 – Substantial equivalency. 2009 Iowa Code 542.19 – Substantial equivalency