Versions of Massachusetts General Laws ch. 176G sec. 6B - Retroactive claims denials for behavioral health services on LawServer 2023 Massachusetts General Laws ch. 176G sec. 6B – Retroactive claims denials for behavioral health services 2022 Massachusetts General Laws ch. 176G sec. 6B – Retroactive claims denials for behavioral health services 2020 Massachusetts General Laws ch. 176G sec. 6B – Retroactive claims denials for behavioral health services