FY 2026 IPPS/LTCH PPS Final Rule: Hospital Readmissions Reduction Program 	
                    Supplemental DRG Relative Weight Information	
"For more information on how to calculate the readmission payment adjustment factors, please visit "	
https://qualitynet.cms.gov/inpatient/hrrp	
Variable Name	Variable Description
Hospital CCN 	Medicare Provider Number or CMS Certification Number (CCN). The file only includes open subsection (d) hospitals with measure results for at least one measure in the Hospital Readmissions Reduction Program. Maryland hospitals and hospitals that are not open as of the October 2025 public reporting open/closed list (published on 4/9/2025) are excluded. 
Number of cases for FY 2021	The number of cases for a measure that are included in the FY 2021 MedPAR and are within the FY 2026 performance period. The base operating DRGs for these cases are used in the calculation of the numerator of the DRG Payment Ratio listed in the FR FY 2026 tab. The sum of the number of cases for a condition/procedure across FYs may not equal the number of eligible discharges in the FR FY 2026 tab due to differences in the underlying data sources. 
Number of cases for FY 2022	The number of cases for a measure that are included in the FY 2022 MedPAR and are within the FY 2026 performance period. The base operating DRGs for these cases are used in the calculation of the numerator of the DRG Payment Ratio listed in the FR FY 2026 tab. The sum of the number of cases for a condition/procedure across FYs may not equal the number of eligible discharges in the FR FY 2026 tab due to differences in the underlying data sources. 
Number of cases for FY 2023	The number of cases for a measure that are included in the FY 2023 MedPAR and are within the FY 2026 performance period. The base operating DRGs for these cases are used in the calculation of the numerator of the DRG Payment Ratio listed in the FR FY 2026 tab. The sum of the number of cases for a condition/procedure across FYs may not equal the number of eligible discharges in the FR FY 2026 tab due to differences in the underlying data sources. 
Number of cases for FY 2024	The number of cases for a measure that are included in the FY 2024 MedPAR and are within the FY 2026 performance period. The base operating DRGs for these cases are used in the calculation of the numerator of the DRG Payment Ratio listed in the FR FY 2026 tab. The sum of the number of cases for a condition/procedure across FYs may not equal the number of eligible discharges in the FR FY 2026 tab due to differences in the underlying data sources. 
Total cases in FY 2021	The total number of cases that are included in the FY 2021 MedPAR and are within the FY 2026 performance period. The base operating DRGs for these cases are used in the calculation of the denominator of the DRG Payment Ratio listed in the FR FY 2026 tab. 
Total cases in FY 2022	The total number of cases that are included in the FY 2022 MedPAR and are within the FY 2026 performance period. The base operating DRGs for these cases are used in the calculation of the denominator of the DRG Payment Ratio listed in the FR FY 2026 tab. 
Total cases in FY 2023	The total number of cases that are included in the FY 2023 MedPAR and are within the FY 2026 performance period. The base operating DRGs for these cases are used in the calculation of the denominator of the DRG Payment Ratio listed in the FR FY 2026 tab. 
Total cases in FY 2024	The total number of cases that are included in the FY 2024 MedPAR and are within the FY 2026 performance period. The base operating DRGs for these cases are used in the calculation of the denominator of the DRG Payment Ratio listed in the FR FY 2026 tab. 
"As clarified in the FY 2022 IPPS/LTCH PPS final rule, CMS excluded claims from ERR calculations and DRG payment ratio calculations for hospitals with approved individual extraordinary circumstance exceptions (ECEs). Data was not removed from dual proportion calculations or the 1-year data period used to calculate the neutrality modifier."	
End of worksheet	
	
