MS-DRG 540 — Osteomyelitis with CC
MDC 08 · Musculoskeletal & Connective Tissue · Medical DRG · FY2026
| FY2026 relative weight | 1.2963 |
|---|---|
| Geometric mean LOS | 4.3 days |
| Arithmetic mean LOS | 5.6 days |
| Severity tier | with CC |
| Post-acute transfer policy | Yes — per-diem reduction applies to qualifying transfers |
| Special payment provision | No |
Severity family — documentation moves the weight 2.55×
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 |
|---|---|---|---|
| 539 | Osteomyelitis with MCC | 1.9697 | 6.2 |
| 540 | Osteomyelitis with CC | 1.2963 | 4.3 |
| 541 | Osteomyelitis without CC/MCC | 0.7715 | 2.9 |
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.