Establishes maximum rates of payment for medical care for patients of the Hawaii State Hospital or of another psychiatric facility who are under the custody of the Director of Health. Authorizes the Department of Health to establish long-term care payment rates for patients discharged to a long-term care facility from the Hawaii State Hospital or another psychiatric facility where they were under the custody of the Director of Health. Exempts the Department of Health from chapter 103F, HRS, for the procurement of medical care and long-term care for patients who are or were under the custody of the Director of Health at the Hawaii State Hospital or a psychiatric facility.