MS-DRG v44.0 · MDC 06: Diseases and Disorders of the Digestive System
331 — Major Small and Large Bowel Procedures without CC/MCC
- Relative weight
- 1.7465
- Geometric mean LOS
- 2.6 days
- Arithmetic mean LOS
- 3.1 days
- Type
- Surgical
About MS-DRG 331
MS-DRG 331, Major Small and Large Bowel Procedures without CC/MCC, is a surgical DRG in MDC 06 (Diseases and Disorders of the Digestive System) under MS-DRG version 44.0, which applies to inpatient discharges from October 1, 2026 through September 30, 2027.
Its FY2027 relative weight is 1.7465, so Medicare's base payment for this DRG is about 1.75 times the average inpatient case, before hospital-specific adjustments. The geometric mean length of stay is 2.6 days and the arithmetic mean is 3.1 days.
It belongs to a 3-level severity family: DRG 329 (with MCC, weight 4.5476), DRG 330 (with CC, weight 2.4263) and DRG 331 (without CC/MCC, weight 1.7465). The highest-severity level carries 2.6 times the weight of the lowest, which is why documenting CC and MCC conditions matters.
It is subject to Medicare's post-acute care transfer policy, so payment can be reduced when a patient with a shorter-than-average stay is discharged to a skilled nursing facility, home health or another post-acute setting.
ICD-10-CM codes that group to DRG 331 (0)
This DRG is assigned by procedure, not by a diagnosis list.
Common questions about DRG 331
What is the relative weight of DRG 331?
- 1.7465 for FY2027 (MS-DRG v44.0), from the IPPS final rule Table 5.
What is the average length of stay for DRG 331?
- The geometric mean length of stay is 2.6 days; the arithmetic mean is 3.1 days.
Is DRG 331 medical or surgical?
- DRG 331 is a surgical DRG.