Versions of Iowa Code 86.18 - Hearings -- evidence on LawServer 2023 Iowa Code 86.18 – Hearings — evidence 2022 Iowa Code 86.18 – Hearings — evidence. 2020 Iowa Code 86.18 – Hearings — evidence. 2018 Iowa Code 86.18 – Hearings — evidence. 2016 Iowa Code 86.18 – Hearings 2014 Iowa Code 86.18 – Hearings – evidence. 2009 Iowa Code 86.18 – Hearings — evidence