MS-DRG v44.0 · MDC 11: Diseases and Disorders of the Kidney and Urinary Tract
666 — Prostatectomy with CC
- Relative weight
- 1.8058
- Geometric mean LOS
- 3.7 days
- Arithmetic mean LOS
- 5 days
- Type
- Surgical
About MS-DRG 666
MS-DRG 666, Prostatectomy with CC, is a surgical DRG in MDC 11 (Diseases and Disorders of the Kidney and Urinary Tract) under MS-DRG version 44.0, which applies to inpatient discharges from October 1, 2026 through September 30, 2027.
Its FY2027 relative weight is 1.8058, so Medicare's base payment for this DRG is about 1.81 times the average inpatient case, before hospital-specific adjustments. The geometric mean length of stay is 3.7 days and the arithmetic mean is 5 days.
It belongs to a 3-level severity family: DRG 665 (with MCC, weight 3.2529), DRG 666 (with CC, weight 1.8058) and DRG 667 (without CC/MCC, weight 1.131). The highest-severity level carries 2.9 times the weight of the lowest, which is why documenting CC and MCC conditions matters.
ICD-10-CM codes that group to DRG 666 (0)
This DRG is assigned by procedure, not by a diagnosis list.
Common questions about DRG 666
What is the relative weight of DRG 666?
- 1.8058 for FY2027 (MS-DRG v44.0), from the IPPS final rule Table 5.
What is the average length of stay for DRG 666?
- The geometric mean length of stay is 3.7 days; the arithmetic mean is 5 days.
Is DRG 666 medical or surgical?
- DRG 666 is a surgical DRG.