MS-DRG v44.0 · MDC 09: Diseases and Disorders of the Skin, Subcutaneous Tissue and Breast
585 — Breast Biopsy, Local Excision and Other Breast Procedures without CC/MCC
- Relative weight
- 1.8924
- Geometric mean LOS
- 2 days
- Arithmetic mean LOS
- 2.4 days
- Type
- Surgical
About MS-DRG 585
MS-DRG 585, Breast Biopsy, Local Excision and Other Breast Procedures without CC/MCC, is a surgical DRG in MDC 09 (Diseases and Disorders of the Skin, Subcutaneous Tissue and Breast) under MS-DRG version 44.0, which applies to inpatient discharges from October 1, 2026 through September 30, 2027.
Its FY2027 relative weight is 1.8924, so Medicare's base payment for this DRG is about 1.89 times the average inpatient case, before hospital-specific adjustments. The geometric mean length of stay is 2 days and the arithmetic mean is 2.4 days.
It belongs to a 2-level severity family: DRG 584 (with CC/MCC, weight 2.0299) and DRG 585 (without CC/MCC, weight 1.8924). The highest-severity level carries 1.1 times the weight of the lowest, which is why documenting CC and MCC conditions matters.
ICD-10-CM codes that group to DRG 585 (0)
This DRG is assigned by procedure, not by a diagnosis list.
Common questions about DRG 585
What is the relative weight of DRG 585?
- 1.8924 for FY2027 (MS-DRG v44.0), from the IPPS final rule Table 5.
What is the average length of stay for DRG 585?
- The geometric mean length of stay is 2 days; the arithmetic mean is 2.4 days.
Is DRG 585 medical or surgical?
- DRG 585 is a surgical DRG.