Versions of Washington Code 71.24.590 - Opioid treatment -- Program licensing or certification by department, department duties -- Use of medications by program -- Definition on LawServer 2023 Washington Code 71.24.590 – Opioid treatment — Program licensing or certification by department, department duties — Use of medications by program — Definition 2022 Washington Code 71.24.590 – Opioid treatment–Program licensing or certification by department, department duties–Use of medications by program–Definition 2020 Washington Code 71.24.590 – Opioid treatment — Program licensing or certification by department, department duties — Use of medications by program — Definition 2019 Washington Code 71.24.590 2018 Washington Code 71.24.590 – Opioid treatment — Program licensing or certification by department, department duties — Definition 2016 Washington Code 71.24.590 – Opiate substitution treatment–Program certification by department, department duties–Definition of opiate substitution treatment