(1) Institutions for mental diseases providing services under ARM 37.88.1401, 37.88.1402, 37.88.1405, 37.88.1406, 37.88.1410, 37.88.1411 and 37.88.1420 must provide for and maintain recorded individual plans of treatment and care to ensure that institutional care maintains the recipient at, or restores the recipient to, the greatest possible degree of health and independent functioning. The plans must include:
(a) an initial review of the recipient's medical, psychiatric and social needs within 30 days after the date of admission;
(b) periodic review of the recipient's medical, psychiatric and social needs;
(c) a determination at least every 90 days of the recipient's need for continued institutional care and for alternative care arrangements;
(d) appropriate medical treatment in the institution; and
(e) appropriate social services.