Versions of Iowa Code 901.12 - Minimum sentence -- parole or work release eligibility -- certain drug offenses on LawServer 2023 Iowa Code 901.12 – Minimum sentence — parole or work release eligibility — certain drug offenses 2022 Iowa Code 901.12 – Minimum sentence — parole or work release eligibility — certain drug offenses. 2020 Iowa Code 901.12 – Minimum sentence — parole or work release eligibility — certain drug offenses. 2018 Iowa Code 901.12 – Minimum sentence — parole or work release eligibility — certain drug offenses.