MS-DRG v44.0 · MDC 07: Diseases and Disorders of the Hepatobiliary System and Pancreas
422 — Hepatobiliary Diagnostic Procedures without CC/MCC
- Relative weight
- 1.4255
- Geometric mean LOS
- 2.1 days
- Arithmetic mean LOS
- 2.8 days
- Type
- Surgical
About MS-DRG 422
MS-DRG 422, Hepatobiliary Diagnostic Procedures without CC/MCC, is a surgical DRG in MDC 07 (Diseases and Disorders of the Hepatobiliary System and Pancreas) under MS-DRG version 44.0, which applies to inpatient discharges from October 1, 2026 through September 30, 2027.
Its FY2027 relative weight is 1.4255, so Medicare's base payment for this DRG is about 1.43 times the average inpatient case, before hospital-specific adjustments. The geometric mean length of stay is 2.1 days and the arithmetic mean is 2.8 days.
It belongs to a 3-level severity family: DRG 420 (with MCC, weight 3.0664), DRG 421 (with CC, weight 1.7121) and DRG 422 (without CC/MCC, weight 1.4255). The highest-severity level carries 2.2 times the weight of the lowest, which is why documenting CC and MCC conditions matters.
ICD-10-CM codes that group to DRG 422 (0)
This DRG is assigned by procedure, not by a diagnosis list.
Common questions about DRG 422
What is the relative weight of DRG 422?
- 1.4255 for FY2027 (MS-DRG v44.0), from the IPPS final rule Table 5.
What is the average length of stay for DRG 422?
- The geometric mean length of stay is 2.1 days; the arithmetic mean is 2.8 days.
Is DRG 422 medical or surgical?
- DRG 422 is a surgical DRG.