MS-DRG 548 — Septic Arthritis with MCC
MDC 08 · Musculoskeletal & Connective Tissue · Medical DRG · FY2026
| FY2026 relative weight | 1.9309 |
|---|---|
| Geometric mean LOS | 5.9 days |
| Arithmetic mean LOS | 7.7 days |
| Severity tier | with MCC |
| Post-acute transfer policy | No |
| Special payment provision | No |
Severity family — documentation moves the weight 2.21×
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 |
|---|---|---|---|
| 548 | Septic Arthritis with MCC | 1.9309 | 5.9 |
| 549 | Septic Arthritis with CC | 1.2072 | 3.9 |
| 550 | Septic Arthritis without CC/MCC | 0.8741 | 3.1 |
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.