Versions of Iowa Code 557.23 - Vested interest on LawServer 2024 Iowa Code 557.23 – Vested interest 2023 Iowa Code 557.23 – Vested interest 2022 Iowa Code 557.23 – Vested interest 2020 Iowa Code 557.23 – Vested interest 2018 Iowa Code 557.23 – Vested interest 2016 Iowa Code 557.23 – Vested interest 2014 Iowa Code 557.23 – Vested interest. 2009 Iowa Code 557.23 – Vested interest