MS-DRG 915 — Allergic Reactions with MCC
MDC 21 · Injuries, Poisonings & Toxic Effects · Medical DRG · FY2026
| FY2026 relative weight | 1.6816 |
|---|---|
| Geometric mean LOS | 3.5 days |
| Arithmetic mean LOS | 4.8 days |
| Severity tier | with MCC |
| Post-acute transfer policy | No |
| Special payment provision | No |
Severity family — documentation moves the weight 2.52×
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 |
|---|---|---|---|
| 915 | Allergic Reactions with MCC | 1.6816 | 3.5 |
| 916 | Allergic Reactions without MCC | 0.6663 | 1.8 |
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.