"Development of the FY 2025 MS-LTC-DRG Relative Weights and Geometric Mean Length of Stays

Our methodology for determining the FY 2025 MS-LTC-DRG weights is discussed in section VIII.B.3.b.of the preamble of the FY 2025 IPPS/LTCH PPS final rule.

This file provides information related to intermediate calculations used in determining the FY 2025 MS-LTC-DRG relative weights and geometric mean length of stays (see tab - FR25 LTC-DRG Weight Development).  

This file also includes the composition of the low-volume quintiles for low-volume MS-LTC-DRGs  (see tab - Quintiles-FR25).

This file also includes the list of the no volume MS-LTC-DRGs and the MS-LTC-DRGs to which each was cross-walked (see tab - Crosswalk-FR25)."	
	
	
	
	
	
	
	
	
	
	
	
	
	
FR25 LTC-DRG Weight Development Variable Description	
Variable Name	Description
MS-LTC-DRG	3-Digit Medicare-Severity-Long-Term Care Diagnosis-Related Group (MS-LTC-DRG) code
MS-LTC-DRG Title	"Medicare-Severity-Long-Term Care Diagnosis-Related Group (MS-LTC-DRG) Title. 

MS-LTC-DRG titles with a * suffix indicate that when determining the relative weights, these MS-LTC-DRGs were adjusted for nonmonotonicity as discussed in Step 7 of the of the MS-LTC-DRG relative weight methodology."
FY 2023 LTCH Cases	Number of applicable LTCH cases from the March 2024 update of the FY 2023 MedPAR file used in determining the relative weights.
"Uncapped Relative Weight  
(with BN factor applied)"	The relative weights prior to the application of the 10-percent cap.  These relative weights reflect the application of the normalization and budget neutrality factors discussed in Step 9 of the MS-LTC-DRG relative weight methodology.
"Capped Relative Weight 
(with BN factor applied)"	The capped relative weights (limited to a 10-percent reduction of their prior year value.) This 10-percent cap does not apply to zero-volume or low-volume MS-LTC-DRGs.  These relative weights reflect the application of the budget neutrality factor discussed in Step 11 of the MS-LTC-DRG relative weight methodology. These are the relative weights as also presented in Table 11 of this final rule.
Capped Relative Weight Flag	Indicator for MS-LTC-DRGs where the relative weights were subject to the 10-percent cap.
GEOLOS	These are the geometric mean length of stays as also presented in Table 11 of this final rule.
