Department Disciplinary Unit (DDU). A restricted area or areas designated by the Commissioner to which an inmate has received a recommended sanction by a Special Hearing Officer.

Deputy Commissioner, Prison Division. The executive staff person who reports to the Commissioner, and whose duties include, but are not limited to, the management of: Assistant Deputy Commissioner(s) of the Prison Division, and the Central Inmate Disciplinary Unit.

Exigent Circumstances. Circumstances that create an unacceptable risk to the safety of any person.

Multidisciplinary Treatment Team. A treatment team that may consist of the following: Unit Clinical Coordinator; Captain; Unit Sergeant; assigned Correction Officers; Correctional Program Officer; mental health clinicians; medical staff; and program staff. For the purposes of 103 CMR 425.00, the Multidisciplinary Treatment Team shall provide Placement Reviews.

Placement Review. A periodic review conducted by a multidisciplinary treatment team for the purposes of ascertaining an inmate's continued need for placement and retention in a Secure Treat

Restrictive Housing. A placement that requires an inmate to be confined to a cell for at least 22 hours per day for the safe and secure operation of the facility. For purposes of 103 CMR 425.00, Restrictive Housing shall not include the following: any placement ordered by a medical or mental health provider, including but not limited to, the placement of an inmate in a Health Services Unit; the placement of an inmate in a hospital; the placement of an inmate in a medical setting where treatment is being provided; or the placement of an inmate on a mental health watch.

Secure Treatment Unit (STU). A maximum security residential treatment program that is not Restrictive Housing and that is designed to provide an alternative to Restrictive Housing for inmates diagnosed with serious mental illness in accordance with clinical standards adopted by the Department of Correction.

Serious Mental Illness. A current or recent diagnosis by a qualified mental health professional of one or more of the following disorders described in the 5th edition of the Diagnostic and Statistical Manual of Mental Disorders:

1. (a) schizophrenia and other psychotic disorders;
2. (b) major depressive disorders;
3. (c) all types of bipolar disorders;
4. (d) a neurodevelopmental disorder, dementia or other cognitive disorder;
5. (e) any disorder commonly characterized by breaks with reality or perceptions of reality;
6. (f) all types of anxiety disorders;
7. (g) trauma and stressor related disorders; or
8. (h) severe personality disorders; or a finding by a qualified mental health professional that the inmate is at serious risk of substantially deteriorating mentally or emotionally while confined in Restrictive Housing, or already has so deteriorated while confined in Restrictive Housing, such that diversion or removal is deemed to be clinically appropriate by a qualified mental health professional.