MS-DRG v44.0 · MDC 05: Diseases and Disorders of the Circulatory System
233 — Coronary Bypass with Cardiac Catheterization or Open Ablation with MCC
- Relative weight
- 8.01
- Geometric mean LOS
- 11.2 days
- Arithmetic mean LOS
- 12.4 days
- Type
- Surgical
About MS-DRG 233
MS-DRG 233, Coronary Bypass with Cardiac Catheterization or Open Ablation with MCC, is a surgical DRG in MDC 05 (Diseases and Disorders of the Circulatory 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 8.01, so Medicare's base payment for this DRG is about 8.01 times the average inpatient case, before hospital-specific adjustments. The geometric mean length of stay is 11.2 days and the arithmetic mean is 12.4 days.
It belongs to a 2-level severity family: DRG 233 (with MCC, weight 8.01) and DRG 234 (without MCC, weight 5.5006). The highest-severity level carries 1.5 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 233 (0)
This DRG is assigned by procedure, not by a diagnosis list.
Common questions about DRG 233
What is the relative weight of DRG 233?
- 8.01 for FY2027 (MS-DRG v44.0), from the IPPS final rule Table 5.
What is the average length of stay for DRG 233?
- The geometric mean length of stay is 11.2 days; the arithmetic mean is 12.4 days.
Is DRG 233 medical or surgical?
- DRG 233 is a surgical DRG.