MS-DRG 427 — Multiple Level Combined Anterior and Posterior Spinal Fusion Except Cervical with CC
MDC 08 · Musculoskeletal & Connective Tissue · Surgical DRG · FY2026
| FY2026 relative weight | 7.2186 |
|---|---|
| Geometric mean LOS | 4.0 days |
| Arithmetic mean LOS | 4.8 days |
| Severity tier | with CC |
| Post-acute transfer policy | Yes — per-diem reduction applies to qualifying transfers |
| Special payment provision | Yes |
Severity family — documentation moves the weight 1.28×
The same base condition splits by coded severity (CC/MCC). Weight deltas here are exactly what one documented comorbidity is worth:
| DRG | Title | FY2026 weight | GMLOS |
|---|---|---|---|
| 427 | Multiple Level Combined Anterior and Posterior Spinal Fusion Except Cervical with CC | 7.2186 | 4.0 |
| 428 | Multiple Level Combined Anterior and Posterior Spinal Fusion Except Cervical without CC/MCC | 5.6220 | 2.6 |
Figures come from the official FY2026 IPPS tables and are payment inputs, not adjudicated amounts. DRG Calculator prices full claims — hospital-specific operating, capital, IME, DSH, uncompensated care and outlier math — and verifies results against the official pricer.