MS-DRG 582 — Mastectomy for Malignancy with CC/MCC
MDC 09 · Skin, Subcutaneous Tissue & Breast · Surgical DRG · FY2026
| FY2026 relative weight | 1.9266 |
|---|---|
| Geometric mean LOS | 2.6 days |
| Arithmetic mean LOS | 3.4 days |
| Severity tier | with CC/MCC |
| Post-acute transfer policy | No |
| Special payment provision | No |
Severity family — documentation moves the weight 1.12×
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 |
|---|---|---|---|
| 582 | Mastectomy for Malignancy with CC/MCC | 1.9266 | 2.6 |
| 583 | Mastectomy for Malignancy without CC/MCC | 1.7244 | 1.7 |
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.