MS-DRG v44.0 · MDC PRE: Pre-MDC
001 — Heart Transplant or Implant of Heart Assist System with MCC
- Relative weight
- 28.0947
- Geometric mean LOS
- 24.5 days
- Arithmetic mean LOS
- 35.5 days
- Type
- Surgical
About MS-DRG 001
MS-DRG 001, Heart Transplant or Implant of Heart Assist System with MCC, is a surgical DRG in Pre-MDC under MS-DRG version 44.0, which applies to inpatient discharges from October 1, 2026 through September 30, 2027.
Its FY2027 relative weight is 28.0947, so Medicare's base payment for this DRG is about 28.09 times the average inpatient case, before hospital-specific adjustments. The geometric mean length of stay is 24.5 days and the arithmetic mean is 35.5 days.
It belongs to a 2-level severity family: DRG 001 (with MCC, weight 28.0947) and DRG 002 (without MCC, weight 11.0088). The highest-severity level carries 2.6 times the weight of the lowest, which is why documenting CC and MCC conditions matters.
ICD-10-CM codes that group to DRG 001 (0)
This DRG is assigned by procedure, not by a diagnosis list.
Common questions about DRG 001
What is the relative weight of DRG 001?
- 28.0947 for FY2027 (MS-DRG v44.0), from the IPPS final rule Table 5.
What is the average length of stay for DRG 001?
- The geometric mean length of stay is 24.5 days; the arithmetic mean is 35.5 days.
Is DRG 001 medical or surgical?
- DRG 001 is a surgical DRG.