(1) errors made by the Office of Mental Health in the calculation of the rate of payment;

(2) errors in the financial or statistical data submitted to the commissioner by a residential treatment facility;

(3) a substantially changed residential treatment facility determined to have a 20-percent change in certified capacity, or a major change in resident population or resident services, when such changes have been approved by the commissioner. Revisions to the rate may also be initiated by the commissioner pursuant to this subdivision;

(4) additional staffing required to meet accreditation standards of the Joint Commission on Accreditation of Hospitals, up to the full-time equivalent staffing standards approved by the commissioner;

(5) Federal- or State-mandated requirements resulting in increased costs;

(6) capital costs approved through the applicable provisions of the Mental Hygiene Law and Part 551 of this Title;

(7) family therapy expenses, as determined by the commissioner;

(8) nursing services for changes in nursing staff requirements, as determined by the commissioner;

(9) additional staffing and other than personal service expenses, subject to prior written approval from the appropriate regional office and the commissioner's designate, resulting from patients who have been diagnosed with Acquired Immune Deficiency Syndrome (AIDS). Approval for additional staffing and other personal service expenses shall be based on the necessity of such services for the safety and well being of patients and a determination that such expenses are within the appropriate budgetary guidelines.

(1) A request based upon the grounds set forth pursuant to paragraph (a)(1) or (2) of this section must be accompanied by a detailed statement of the corrected financial or statistical data certified pursuant to section 578.5(c)(2) of this Part.

(2) A request based upon the grounds set forth pursuant to paragraph (a)(1) or (2) of this section shall be submitted within 120 days of receipt by a residential treatment facility of the rate of payment computation sheet.

(3) A request for a revision pursuant to paragraph (a)(3), (4), (5), (6), (7), (8) or (9) of this section must be submitted within 60 days of the close of the rate of payment period in question.

(4) A request for a revision pursuant to paragraph (a)(6) of this section and consistent with this section shall be processed on a semi-annual basis, beginning July 1, 1990.