42 C.F.R. § 413.77
(a) Per resident amount for the base period.
(1) Except as provided in paragraph (d) of this section, the contractor determines a base-period per resident amount for each hospital as follows:
(2) In determining the base-period per resident amount under paragraph (a)(1) of this section, the contractor—
(b) Per resident amount for cost reporting periods beginning on or after July 1, 1985, and before July 1, 1986. For cost reporting periods beginning on or after July 1, 1985, and before July 1, 1986, a hospital's base-period per resident amount is adjusted as follows:
(c) Per resident amount for cost reporting periods beginning on or after July 1, 1986. Subject to the provisions of paragraph (d) of this section, for cost reporting periods beginning on or after July 1, 1986, a hospital's base-period per resident amount is adjusted as follows:
(d) Per resident amount for cost reporting periods beginning on or after October 1, 2000 and ending on or before September 30, 2013. For cost reporting periods beginning on or after October 1, 2000 and ending on or before September 30, 2013, a hospital's per resident amount for each fiscal year is adjusted in accordance with the following provisions:
(1) General provisions. For purposes of this § 413.77—
(i) Weighted average per resident amount. The weighted average per resident amount is established as follows:
(2) Adjustment beginning in FY 2001 and ending in FY 2013. For cost reporting periods beginning on or after October 1, 2000, and ending on or before September 30, 2013, a hospital's per resident amount is adjusted in accordance with paragraphs (d)(2)(i) through (d)(2)(iv) of this section, in that order:
(iii) Determining necessary revisions to the per resident amount. The locality-adjusted national average per resident amount, as calculated in accordance with paragraph (d)(2)(ii) of this section, is compared to the hospital's per resident amount and is revised, if appropriate, according to the following three categories:
(A) Floor. (1) For cost reporting periods beginning on or after October 1, 2000, and before October 1, 2001, if the hospital's per resident amount would otherwise be less than 70 percent of the locality-adjusted national average per resident amount for FY 2001 (as determined under paragraph (d)(2)(ii) of this section), the per resident amount is equal to 70 percent of the locality-adjusted national average per resident amount for FY 2001.
(2) For cost reporting periods beginning on or after October 1, 2001, and before October 1, 2002, if the hospital's per resident amount would otherwise be less than 85 percent of the locality-adjusted national average per resident amount for FY 2002 (as determined under paragraph (d)(2)(ii) of this section), the per resident amount is equal to 85 percent of the locality-adjusted national average per resident amount for FY 2002.
(3) For subsequent cost reporting periods beginning on or after October 1, 2002, the hospital's per resident amount is updated using the methodology specified under paragraph (c)(1) of this section.
(B) Ceiling. If the hospital's per resident amount is greater than 140 percent of the locality-adjusted national average per resident amount, the per resident amount is adjusted as follows for FY 2001 through FY 2013:
(1) FY 2001. For cost reporting periods beginning on or after October 1, 2000 and on or before September 30, 2001, if the hospital's FY 2000 per resident amount exceeds 140 percent of the FY 2001 locality-adjusted national average per resident amount (as calculated under paragraph (d)(2)(ii) of this section), subject to the provision stated in paragraph (d)(2)(iii)(B)(5) of this section, the hospital's per resident amount is frozen at the FY 2000 per resident amount and is not updated for FY 2001 by the CPI-U factor.
(2) FY 2002. For cost reporting periods beginning on or after October 1, 2001, and on or before September 30, 2002, if the hospital's FY 2001 per resident amount exceeds 140 percent of the FY 2002 locality-adjusted national average per resident amount, subject to the provision stated in paragraph (d)(2)(iii)(B)(5) of this section, the hospital's per resident amount is frozen at the FY 2001 per resident amount and is not updated for FY 2002 by the CPI-U factor.
(3) FY 2003. For cost reporting periods beginning on or after October 1, 2002, and on or before September 30, 2003, if the hospital's per resident amount for the previous cost reporting period is greater than 140 percent of the locality-adjusted national average per resident amount for that same previous cost reporting period (for example, for cost reporting periods beginning in FY 2003, compare the hospital's per resident amount from the FY 2002 cost report to the hospital's locality-adjusted national average per resident amount from FY 2002), subject to the provision stated in paragraph (d)(2)(iii)(B)(5) of this section, the hospital's per resident amount is adjusted using the methodology specified in paragraph (c)(1) of this section, except that the CPI-U applied for a 12-month period is reduced (but not below zero) by 2 percentage points.
(4) FY 2004 through FY 2013. For cost reporting periods beginning on or after October 1, 2003, and on or before September 30, 2013, if the hospital's preceding year per resident amount exceeds 140 percent of the current year's locality-adjusted national average per resident amount (as calculated under paragraph (d)(2)(ii) of this section), subject to the provision stated in paragraph (d)(2)(iii)(B)(5) of this section, the hospital-specific per resident amount is frozen for the current year at the preceding year's hospital-specific per resident amount and is not updated by the CPI-U factor.
(5) General rule for hospitals that exceed the ceiling. For cost reporting periods beginning on or after October 1, 2000, and on or before September 30, 2013, if a hospital's per resident amount exceeds 140 percent of the hospital's locality-adjusted national average per resident amount and it is adjusted under any of the criteria under paragraphs (d)(2)(iii)(B)(1) through (d)(2)(iii)(B)(3) of this section, the current year per resident amount cannot be reduced below 140 percent of the locality-adjusted national average per resident amount.
(e) Exceptions—(1) Base period for certain hospitals. If a hospital did not have any approved medical residency training programs or did not participate in Medicare during the base period, but either condition changes in a cost reporting period beginning on or after July 1, 1985, the contractor establishes a per resident amount for the hospital using the information from the first cost reporting period during which the hospital participates in Medicare and the residents are on duty during the first month of that period. Effective for cost reporting periods beginning on or after October 1, 2006, if a hospital did not have any approved medical residency training programs or did not participate in Medicare during the base period, but either condition changes in a cost reporting period beginning on or after October 1, 2006, and the residents are not on duty during the first month of that period, the contractor establishes a per resident amount for the hospital using the information from the first cost reporting period immediately following the cost reporting period during which the hospital participates in Medicare and residents began training at the hospital. The per resident amount is based on the lower of the amount specified in paragraph (e)(1)(i) or paragraph (e)(1)(ii) of this section, subject to the provisions of paragraph (e)(1)(iii) of this section. Any GME costs incurred by the hospital during the cost reporting period prior to the base period used for calculating the PRA are reimbursed on a reasonable cost basis.
(ii) Except as specified in paragraph (e)(1)(iii)of this section—
(iv) A hospital that, as of December 27, 2020, has a per resident amount based on less than 1.0 FTE in any cost reporting period beginning before October 1, 1997, may choose to receive a recalculated per resident amount either when it trains at least 1.0 FTE in the earliest cost reporting period beginning on or after December 27, 2020, and before December 26, 2025, or when it trains at least 1.0 FTE in the first cost reporting period beginning after December 27, 2021. A hospital that, as of December 27, 2020, has a per resident amount based on no more than 3.0 FTEs in any cost reporting period beginning on or after October 1, 1997, and before December 27, 2020, may choose to receive a recalculated per resident amount either when it trains more than 3.0 FTEs in the earliest cost reporting period beginning on or after December 27, 2020 and before December 26, 2025, or when it trains more than 3.0 FTE in the first cost reporting period beginning after December 27, 2021. In either case, residents need not be on duty during the first month of the cost reporting period. The recalculated per resident amount is based on the lower of—
(g) Special use of locality-adjusted national average per resident amount. Effective for portions of cost reporting periods beginning on or after July 1, 2005, for a hospital that counts additional residents as a result of an increase in its FTE resident cap under § 413.79(c)(4) direct GME payments attributable to those additional FTE residents are calculated using the locality-adjusted national average per resident amount, as determined under paragraph (d)(2)(ii) of this section. The hospital will receive direct GME payments based on the sum of the following two direct GME calculations:
[69 FR 49254, Aug. 11, 2004, as amended at 69 FR 60252, Oct. 7, 2004; 70 FR 47489, Aug. 12, 2005; 71 FR 48142, Aug. 18, 2006; 86 FR 73512, Dec. 27, 2021; 87 FR 4167, Jan. 27, 2022]