MS-DRG v44.0 · MDC 08: Diseases and Disorders of the Musculoskeletal System and Connective Tissue
429 — Combined Anterior and Posterior Cervical Spinal Fusion with MCC
- Relative weight
- 8.8363
- Geometric mean LOS
- 9.5 days
- Arithmetic mean LOS
- 12 days
- Type
- Surgical
About MS-DRG 429
MS-DRG 429, Combined Anterior and Posterior Cervical Spinal Fusion with MCC, is a surgical DRG in MDC 08 (Diseases and Disorders of the Musculoskeletal System and Connective Tissue) under MS-DRG version 44.0, which applies to inpatient discharges from October 1, 2026 through September 30, 2027.
Its FY2027 relative weight is 8.8363, so Medicare's base payment for this DRG is about 8.84 times the average inpatient case, before hospital-specific adjustments. The geometric mean length of stay is 9.5 days and the arithmetic mean is 12 days.
It belongs to a 2-level severity family: DRG 429 (with MCC, weight 8.8363) and DRG 430 (without MCC, weight 5.8956). The highest-severity level carries 1.5 times the weight of the lowest, which is why documenting CC and MCC conditions matters.
ICD-10-CM codes that group to DRG 429 (0)
This DRG is assigned by procedure, not by a diagnosis list.
Common questions about DRG 429
What is the relative weight of DRG 429?
- 8.8363 for FY2027 (MS-DRG v44.0), from the IPPS final rule Table 5.
What is the average length of stay for DRG 429?
- The geometric mean length of stay is 9.5 days; the arithmetic mean is 12 days.
Is DRG 429 medical or surgical?
- DRG 429 is a surgical DRG.