Table 6P.10a - Table displaying the five criteria to create subgroups for a three-way MS-DRG split and either of the two-way MS-DRG splits			
Criteria Number and Description	"Three Way Split 123
(MCC vs CC vs NonCC)
"	"Two Way Split 1_23
(MCC vs CC+NonCC)
"	"Two Way Split 12_3
(MCC+CC vs NonCC)"
			
1) at least 500 or more cases in the MCC/CC/NonCC group 	"500+ cases for MCC group; and
500+ cases for CC group; and
500+ cases for NonCC group
"	"500+ cases for MCC group; and
500+ cases for (CC+NonCC) group"	"500+ cases for (MCC+CC) group; and
500+ cases for NonCC group"
			
			
2) at least 5% or more of the patients are in the MCC/CC/NonCCgroup 	"5%+ cases for MCC group; and
5%+ cases for CC group; and
5%+ cases for NonCC group"	"5%+ cases for MCC group; and
5%+ cases for (CC+NonCC) group"	"5%+ cases for (MCC+CC) group; and
5%+ cases for NonCC group"
			
			
3) there is at least a 20% difference in average cost between subgroups	20%+ difference in Avg Cost between MCC group and CC group; and 20%+ difference in Avg Cost between CC group and NonCC group	20%+ difference in Avg Cost between MCC group and (CC+NonCC) group	20%+ difference in Avg Cost between (MCC+CC) group and NonCC group
			
"4) there is at least a $2,000 difference in average cost between subgroups "	"$2,000+ difference in Avg Cost between MCC group and CC group; and $2,000+ difference in Avg Cost between CC group and NonCC group"	"$2,000+ difference in Avg Cost between MCC group and (CC+NonCC) group"	"$2,000+ difference in Avg Cost between (MCC+CC) group and NonCC group"
			
5) the R2 of the split groups is greater than or equal to 3	R2 > 3.0 for the three way split within the Base DRG	R2 > 3.0 for the two way 1_23 split within the Base DRG	R2 > 3.0 for the two way 12_3 split within the Base DRG
"All five criteria must be met in order to split a base MS-DRG by CC level.  The first step in our process of evaluating if the creation of a new CC subgroup within a base MSDRG is warranted is to determine if all the criteria are satisfied for a three-way split. If the criteria fail, the next step is to determine if the criteria are satisfied for a two-way split. If the criteria for both of the two-way splits fail, then a split (or CC subgroup) would generally not be warranted for that base MSDRG. If the three-way split fails on any one of the five criteria and all five criteria for both two-way splits (1_23 and 12_3) are met, we would apply the two-way split with the highest R2 value."			
