Table 5.
APR-DRG severity of illness and case mix index
| Catheterization charge category | Cases | Median | APR-DRG v20 SOI | APR-DRG v20 CMI | ||||
|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | Weighted | Geometric | |||
| N (%) | Charge ($) | N (%) | N (%) | N (%) | N (%) | Mean SOI | Mean CMI | |
| 1 | 119 (4) | 13,989 | 2 (2) | 18 (15) | 47 (40) | 52 (44) | 3.3 | 5.8 |
| 2 | 863 (30) | 18,404 | 78 (9) | 278 (32) | 270 (31) | 237 (27) | 2.8 | 3.4 |
| 3 | 434 (15) | 30,301 | 53 (12) | 169 (39) | 125 (29) | 87 (20) | 2.6 | 3.8 |
| 4 | 456 (16) | 35,838 | 136 (30) | 130 (29) | 116 (25) | 74 (16) | 2.3 | 3.9 |
| 5 | 532 (19) | 43,847 | 16 (3) | 208 (39) | 207 (39) | 101 (19) | 2.7 | 3.8 |
| 6 | 382 (13) | 57,692 | 10 (3) | 160 (42) | 160 (42) | 52 (14) | 2.7 | 3.7 |
| 7 | 85 (3) | 82,746 | 3 (4) | 44 (52) | 36 (42) | 2 (2) | 2.4 | 4.1 |
CMI case mix index, SOI severity of illness