Table 6. Number and percent of diagnosis-related groups (DRGs) and cases with absolute differences between cost- and charge-based weights of less than or equal to 5 and 10 percent for medical and surgical DRGs, by method of recalibration.
| Weight recalibration method | 5 percent | 10 percent | ||||||
|---|---|---|---|---|---|---|---|---|
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| DRGs | Cases | DRGs | Cases | |||||
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| Number | Percent | Number | Percent | Number | Percent | Number | Percent | |
| Medical DRGs | ||||||||
| Original | 128 | 67.4 | 414,784 | 61.6 | 177 | 93.2 | 627,277 | 93.1 |
| Current | 134 | 70.5 | 472,890 | 70.2 | 179 | 94.2 | 641,652 | 95.3 |
| Hospital relative value | 141 | 74.2 | 491,241 | 73.0 | 189 | 99.5 | 673,060 | 100.0 |
| Surgical DRGs | ||||||||
| Original | 123 | 76.4 | 191,370 | 70.0 | 155 | 96.3 | 268,122 | 98.1 |
| Current | 136 | 84.5 | 207,928 | 76.1 | 159 | 98.8 | 272,354 | 99.7 |
| Hospital relative value | 148 | 91.9 | 228,221 | 83.5 | 161 | 99.9 | 273,298 | 100.0 |
SOURCE: Health Care Financing Administration, Bureau of Data Management and Strategy: Data from the 1984 Medicare Cost Report File and from the 1984 Medicare 20-Percent Stay File.