FY 2021 IPPS Final Rule: Hospital Readmissions Reduction Program 	
                    Supplemental DRG Relative Weight Information	
NOTE: Data provided can be used to estimate the FY 2021 Payment Adjustment Factors. Estimated factors may	
not precisely match the FY 2021 final Payment Adjustment Factors because CMS uses payments reported on	
MedPAR to calculate the readmission payment adjustment factors as described in the IPPS/LTCH PPS final rule. 	
"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 2020 public reporting open/closed list (published on 4/2/2020) are excluded. 
Number of cases for FY 2016	The number of cases for a measure that are included in the FY 2016 MedPAR and are within in the FY 2021 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 2021 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 2021 tab due to differences in the underlying data sources. 
Number of cases for FY 2017	The number of cases for a measure that are included in the  FY 2017 MedPAR and are within in the FY 2021 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 2021 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 2021 tab due to differences in the underlying data sources. 
Number of cases for FY 2018	The number of cases for a measure that are included in the FY 2018 MedPAR and are within in the FY 2021 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 2021 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 2021 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 in the FY 2021 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 2021 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 2021 tab due to differences in the underlying data sources. 
Total cases in FY 2016	The total number of cases that are included in the FY 2016 MedPAR and are within in the FY 2021 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 2021 tab. 
Total cases in FY 2017 	The total number of cases that are included in the FY 2017 MedPAR and are within in the FY 2021 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 2021 tab. 
Total cases in FY 2018	The total number of cases that are included in the FY 2018 MedPAR and are within in the FY 2021 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 2021 tab. 
Total cases in FY 2019	The total number of cases that are included in the FY 2019 MedPAR and are within in the FY 2021 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 2021 tab. 
"Footnote: The FY 2021 performance period is July 01, 2016 to June 30, 2019"	
end of worksheet	
