Versions of Iowa Code 557B.2 - Registration requirement on LawServer 2023 Iowa Code 557B.2 – Registration requirement 2022 Iowa Code 557B.2 – Registration requirement 2020 Iowa Code 557B.2 – Registration requirement 2018 Iowa Code 557B.2 – Registration requirement 2016 Iowa Code 557B.2 – Registration requirement 2014 Iowa Code 557B.2 – Registration requirement. 2009 Iowa Code 557B.2 – Registration requirement