Versions of Iowa Code 100A.3 - Confidentiality -- subpoena on LawServer 2023 Iowa Code 100A.3 – Confidentiality — subpoena 2022 Iowa Code 100A.3 – Confidentiality — subpoena. 2020 Iowa Code 100A.3 – Confidentiality — subpoena. 2018 Iowa Code 100A.3 – Confidentiality — subpoena. 2016 Iowa Code 100A.3 – Confidentiality 2014 Iowa Code 100A.3 – Confidentiality – subpoena. 2009 Iowa Code 100A.3 – Confidentiality — subpoena