Pursuant to 39-A M.R.S.A. §209-A, the medical fee schedule for services rendered by health care facilities must reflect the methodology and categories set forth in the federal Centers for Medicare and Medicaid Services severity-diagnosis related group system for inpatient services. Inpatient fees are calculated by multiplying the base rate times the MS-DRG weight. In the event of a dispute regarding the fee listed in Appendix III, the listed relative weight times the base rate controls. For inpatient services that take place during two different calendar years, payment is calculated based on the fees in effect on the discharge date.
C.M.R. 90, 351, ch. 5, § 351-5-3, subsec. 351-5-3-05