MS-DRG v44.0 · MDC 06: Diseases and Disorders of the Digestive System
329 — Major Small and Large Bowel Procedures with MCC
- Relative weight
- 4.5476
- Geometric mean LOS
- 9.1 days
- Arithmetic mean LOS
- 11.9 days
- Type
- Surgical
About MS-DRG 329
MS-DRG 329, Major Small and Large Bowel Procedures with 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 4.5476, so Medicare's base payment for this DRG is about 4.55 times the average inpatient case, before hospital-specific adjustments. The geometric mean length of stay is 9.1 days and the arithmetic mean is 11.9 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 329 (0)
This DRG is assigned by procedure, not by a diagnosis list.
Common questions about DRG 329
What is the relative weight of DRG 329?
- 4.5476 for FY2027 (MS-DRG v44.0), from the IPPS final rule Table 5.
What is the average length of stay for DRG 329?
- The geometric mean length of stay is 9.1 days; the arithmetic mean is 11.9 days.
Is DRG 329 medical or surgical?
- DRG 329 is a surgical DRG.