2023 Washington Code 18.22.800 – Opioid drug prescribing rules — Adoption

2022 Washington Code 18.22.800 – Opioid drug prescribing rules–Adoption

2020 Washington Code 18.22.800 – Opioid drug prescribing rules — Adoption

2019 Washington Code 18.22.800 – Opioid drug prescribing rules — Adoption

2018 Washington Code 18.22.800 – Opioid drug prescribing rules — Adoption