(1) Each hospital annually shall file its year-end report with the department within one hundred twenty days after the close of its fiscal year in the form and manner specified in the manual: Provided, however, The one hundred twenty-day period may be extended up to and including an additional sixty days upon submission of adequate justification to the department. If more than one hospital is operated by the reporting organization, the information required by this section shall be reported for each hospital separately.

(2) Information submitted pursuant to this section shall be certified by the hospital's administrative and financial officers, that such reports, to the best of their knowledge and belief, have been prepared in accordance with the prescribed system of accounting and reporting, and fairly state the financial position of the hospital as of the specified date. The department also may require attestation as to such statements from responsible officials of the hospital so designated by the governing body, if any, of the hospital.