The Department of Mental Health maintains this content to provide greater public access to the regulations. While every effort is made to ensure that the regulations included on this site are accurate and up-to-date, they are unofficial and for informational purposes only. It is possible that discrepancies may exist between the regulations contained in this site, and the official regulations on file at the Code of Massachusetts Regulations and the Massachusetts Register maintained by the Secretary of State of the Commonwealth. In the event of any such discrepancy, including the differences pertaining to effective dates, the regulations on file with the Secretary of State are controlling. The official regulations may be obtained at the State Bookstore, Room 116, Boston , MA 02133 by calling (617) 727-2831.