FY 2023 IPPS 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.org/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 2022 public reporting open/closed list (published on 5/11/2022) are excluded. 
Number of cases for FY 2018	The number of cases for a measure that are included in the FY 2018 MedPAR and are within the FY 2023 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 2023 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 2023 tab due to differences in the underlying data sources. 
Number of cases for FY 2019	The number of cases for a measure that are included in the FY 2019 MedPAR and are within the FY 2023 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 2023 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 2023 tab due to differences in the underlying data sources. 
Number of cases for FY 2020	The number of cases for a measure that are included in the FY 2020 MedPAR and are within the FY 2023 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 2023 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 2023 tab due to differences in the underlying data sources. 
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 2023 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 2023 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 2023 tab due to differences in the underlying data sources. 
Total cases in FY 2018 	The total number of cases that are included in the FY 2018 MedPAR and are within the FY 2023 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 2023 tab. 
Total cases in FY 2019	The total number of cases that are included in the FY 2019 MedPAR and are within the FY 2023 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 2023 tab. 
Total cases in FY 2020	The total number of cases that are included in the FY 2020 MedPAR and are within the FY 2023 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 2023 tab. 
Total cases in FY 2021	The total number of cases that are included in the FY 2021 MedPAR and are within the FY 2023 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 2023 tab. 
"Note: As clarified in the FY 2022 IPPS/LTCH PPS final rule, CMS will exclude claims from ERR calculations and DRG payment ratio calculations for hospitals with approved individual extraordinary circumstance exceptions (ECEs) for any quarter during the performance period. Data will not be removed from dual proportion calculations or the 1-year data period used to calculate the neutrality modifier."	
"As discussed in the FY 2022 IPPS/LTCH PPS final rule, CMS will not use claims data representing quarter (Q)1 and Q2 2020 in its calculations for the Hospital Readmissions Reduction Program (86 FR 45260 - 45261). The performance period in this report has been updated to reflect this policy. The readmission measures used in the Hospital Readmissions Reduction Program identify readmissions within 30 days of each index stay; therefore, the performance period for the Hospital Readmissions Reduction Program will also not use claims data representing the 30 days before January 1, 2020. The FY 2023 performance period for the Hospital Readmissions Reduction Program is July 1, 2018 to December 1, 2019 and July 1, 2020 to June 30, 2021, so that no claims from Q1 and Q2 2020 are used in the measure or program calculations."	
"As finalized in the FY 2022 IPPS/LTCH PPS final rule, the pneumonia readmission measure is suppressed in FY 2023 Hospital Readmissions Reduction Program payment reduction calculations due to COVID-19's substantial impact on this measure (86 FR 45254-45256). The pneumonia readmission measure results do not contribute to FY 2023 Hospital Readmissions Reduction Program payment reduction calculations and are not included in this file."	
End of worksheet	
