Mental health: code; definition of mental health professional; expand to include physician assistants, certified nurse practitioners, and clinical nurse specialists-certified, and allow them to perform certain examinations. Amends secs. 100a, 100b, 100c, 281b, 400, 420, 423, 425, 426, 427, 429, 430, 434, 435, 438, 452, 461, 463, 498o, 517, 532, 700, 740 & 742 of 1974 PA 258 (MCL 330.1100a et seq.).