Versions of See prior versions of a law on LawServer 2024 Massachusetts General Laws ch. 12C sec. 21A – Continuing program of investigation and study of mental health, chronic pain and substance use disorders; development of criteria for behavioral health services 2023 Massachusetts General Laws ch. 12C sec. 21A – Continuing program of investigation and study of mental health, chronic pain and substance use disorders; development of criteria for behavioral health services 2022 Massachusetts General Laws ch. 12C sec. 21A – Continuing program of investigation and study of mental health, chronic pain and substance use disorders 2020 Massachusetts General Laws ch. 12C sec. 21A – Continuing program of investigation and study of mental health, chronic pain and substance use disorders 2019 Massachusetts General Laws ch. 12C sec. 21A – Continuing program of investigation and study of mental health, chronic pain and substance use disorders 2017 Massachusetts General Laws ch. 12C sec. 21A – Continuing program of investigation and study of mental health and substance use disorders 2016 Massachusetts General Laws ch. 12C sec. 21A – Continuing program of investigation and study of mental health and substance use disorders 2015 Massachusetts General Laws ch. 12C sec. 21A – Continuing program of investigation and study of mental health and substance use disorders