2023 Washington Code 18.51.185 – Outpatient services — Cost studies — Vendor rates

2022 Washington Code 18.51.185 – Outpatient services–Cost studies–Vendor rates

2020 Washington Code 18.51.185 – Outpatient services — Cost studies — Vendor rates

2019 Washington Code 18.51.185 – Outpatient services — Cost studies — Vendor rates

2018 Washington Code 18.51.185 – Outpatient services — Cost studies — Vendor rates

2016 Washington Code 18.51.185 – Outpatient services–Cost studies–Vendor rates

2015 Washington Code 18.51.185 – Outpatient services–Cost studies–Vendor rates

2014 Washington Code 18.51.185 – Outpatient services — Cost studies — Vendor rates

2013 Washington Code 18.51.185 – Outpatient services — Cost studies — Vendor rates

2009 Washington Code 18.51.185 – Out-patient services — Cost studies — Vendor rates