MS-DRG 643 — Endocrine Disorders with MCC
MDC 10 · Endocrine, Nutritional & Metabolic · Medical DRG · FY2026
| FY2026 relative weight | 1.6461 |
|---|---|
| Geometric mean LOS | 4.9 days |
| Arithmetic mean LOS | 6.3 days |
| Severity tier | with MCC |
| Post-acute transfer policy | Yes — per-diem reduction applies to qualifying transfers |
| Special payment provision | No |
Severity family — documentation moves the weight 2.14×
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 |
|---|---|---|---|
| 643 | Endocrine Disorders with MCC | 1.6461 | 4.9 |
| 644 | Endocrine Disorders with CC | 1.0250 | 3.4 |
| 645 | Endocrine Disorders without CC/MCC | 0.7683 | 2.7 |
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.