Versions of Iowa Code 527.9 - Central routing units on LawServer 2023 Iowa Code 527.9 – Central routing units 2022 Iowa Code 527.9 – Central routing units 2020 Iowa Code 527.9 – Central routing units 2018 Iowa Code 527.9 – Central routing units 2016 Iowa Code 527.9 – Central routing units 2014 Iowa Code 527.9 – Central routing units. 2009 Iowa Code 527.9 – Central routing units