Versions of Iowa Code 536C.11 - Waiver unenforceable on LawServer 2023 Iowa Code 536C.11 – Waiver unenforceable 2022 Iowa Code 536C.11 – Waiver unenforceable 2020 Iowa Code 536C.11 – Waiver unenforceable 2018 Iowa Code 536C.11 – Waiver unenforceable 2016 Iowa Code 536C.11 – Waiver unenforceable 2014 Iowa Code 536C.11 – Waiver unenforceable. 2009 Iowa Code 536C.11 – Waiver unenforceable