MS-DRG 426: MULTIPLE LEVEL COMBINED ANTERIOR AND POSTERIOR SPINAL FUSION EXCEPT CERVICAL WITH MCC
MS-DRG 426 is multiple level combined anterior and posterior spinal fusion except cervical with mcc, in MDC 08 (a surgical DRG), at the with-MCC (major complication or comorbidity) level. Its FY2027 relative weight is 9.9191, so a case here pays more than the average Medicare inpatient stay (weight 1.0), with a geometric mean length of stay of 6.70 days.
FY2027 payment factors
- Relative weight
- 9.9191
- Geometric mean LOS
- 6.70
- Arithmetic mean LOS
- 8.60
- Post-acute transfer
- Yes
CMS caps year-over-year weight decreases at 10%. Before the cap this DRG weighs 9.1647; the capped weight above is the one used for payment. 41 DRGs differ this way in FY2027.
This DRG is subject to the post-acute care transfer policy: a discharge to a qualifying setting below the mean length of stay is paid per diem rather than in full.
The severity splits
Same base DRG, split by whether a secondary diagnosis is a CC or MCC. The last column is the weight change from MS-DRG 426.
| 426 | MULTIPLE LEVEL COMBINED ANTERIOR AND POSTERIOR SPINAL FUSION EXCEPT CERVICAL WITH MCC | 9.9191 | |
| 427 | MULTIPLE LEVEL COMBINED ANTERIOR AND POSTERIOR SPINAL FUSION EXCEPT CERVICAL WITH CC | 6.7049 | -3.2142 |
| 428 | MULTIPLE LEVEL COMBINED ANTERIOR AND POSTERIOR SPINAL FUSION EXCEPT CERVICAL WITHOUT CC/MCC | 5.9222 | -3.9969 |
All FY2027 MS-DRGs · MDC 08