Iowa Code > Chapter 154A - Hearing Aids 2023 Iowa Code > Chapter 154A – Hearing Aids 2009 Iowa Code Chapter 154A – Hearing aids 2014 Iowa Code > Chapter 154A – Hearing aids 2016 Iowa Code > Chapter 154A – Hearing Aids 2018 Iowa Code > Chapter 154A – Hearing Aids 2020 Iowa Code > Chapter 154A – Hearing Aids 2022 Iowa Code > Chapter 154A – Hearing Aids