FY 2024 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.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 2023 public reporting open/closed list (published on 4/1/2023) are excluded. 	
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 2024 performance period. The base operating DRG payment amounts for these cases are used in the calculation of the numerator of the DRG Payment Ratio listed in the FR FY 2024 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 2024 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 2024 performance period. The base operating DRG payment amounts for these cases are used in the calculation of the numerator of the DRG Payment Ratio listed in the FR FY 2024 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 2024 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 2024 performance period. The base operating DRG payment amounts for these cases are used in the calculation of the numerator of the DRG Payment Ratio listed in the FR FY 2024 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 2024 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 2024 performance period. The base operating DRG payment amounts for these cases are used in the calculation of the numerator of the DRG Payment Ratio listed in the FR FY 2024 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 2024 tab due to differences in the underlying data sources. 	
Total cases in FY 2019 	The total number of cases that are included in the FY 2019 MedPAR and are within the FY 2024 performance period. The base operating DRG payment amounts for these cases are used in the calculation of the denominator of the DRG Payment Ratio listed in the FR FY 2024 tab. 	
Total cases in FY 2020	The total number of cases that are included in the FY 2020 MedPAR and are within the FY 2024 performance period. The base operating DRG payment amounts for these cases are used in the calculation of the denominator of the DRG Payment Ratio listed in the FR FY 2024 tab. 	
Total cases in FY 2021	The total number of cases that are included in the FY 2021 MedPAR and are within the FY 2024 performance period. The base operating DRG payment amounts for these cases are used in the calculation of the denominator of the DRG Payment Ratio listed in the FR FY 2024 tab. 	
Total cases in FY 2022	The total number of cases that are included in the FY 2022 MedPAR and are within the FY 2024 performance period. The base operating DRG payment amounts for these cases are used in the calculation of the denominator of the DRG Payment Ratio listed in the FR FY 2024 tab. 	end of table
"Note: The FY 2024 performance period is impacted by the national Extraordinary Circumstance Exception (ECE) in response to the COVID-19 public health emergency. CMS is not using claims data representing quarter (Q)1 and Q2 2020 in its calculations for HRRP (March 27, 2020 and 85 FR 54832). The discharge period in this report has been updated to reflect this policy. The readmission measures used in HRRP identify readmissions within 30 days of each index stay; therefore, the performance periods for the measures are July 1, 2019 to December 1, 2019 and July 1, 2020 to June 30, 2022, so that no claims from Q1 and Q2 2020 are used in the measure or program calculations."		
"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 period between Q3 2020 and Q2 2022, inclusive. Data will not be removed from dual proportion calculations or the 1-year data period used to calculate the neutrality modifier."		
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