Versions of Washington Code 51.18.050 - Retrospective rating groups -- Probationary status -- Denial of future enrollment on LawServer 2023 Washington Code 51.18.050 – Retrospective rating groups — Probationary status — Denial of future enrollment 2022 Washington Code 51.18.050 – Retrospective rating groups–Probationary status–Denial of future enrollment 2020 Washington Code 51.18.050 – Retrospective rating groups — Probationary status — Denial of future enrollment 2019 Washington Code 51.18.050 2018 Washington Code 51.18.050 – Retrospective rating groups — Probationary status — Denial of future enrollment 2016 Washington Code 51.18.050 – Retrospective rating groups–Probationary status–Denial of future enrollment 2015 Washington Code 51.18.050 – Retrospective rating groups–Probationary status–Denial of future enrollment 2014 Washington Code 51.18.050 – Retrospective rating groups — Probationary status — Denial of future enrollment 2013 Washington Code 51.18.050 – Retrospective rating groups — Probationary status — Denial of future enrollment 2009 Washington Code 51.18.050 – Retrospective rating groups — Probationary status — Denial of future enrollment