MS-DRG 447Surgical

Multiple Level Spinal Fusion Except Cervical with MCC

Major Diagnostic Category 08·Grouped by procedure·FY 2027

MS-DRG 447 is a Surgical Medicare Severity Diagnosis Related Group under Major Diagnostic Category 08 (MDC 08) with a Major Complication or Comorbidity (MCC). For FY 2027 it carries a relative weight of 6.9667 with a geometric mean length of stay of 8.1 days and an arithmetic mean of 10.3 days. Hospitals use this grouping to determine reimbursement for inpatient stays under Medicare.

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FY 2027 payment data

From Table 5 of the FY 2027 IPPS Final Rule (CMS).

Relative weight:
6.9667 (payment multiplier vs. the average case (1.0))
Geometric mean stay:
8.1 days (used for transfer payments)
Average stay:
10.3 days (arithmetic mean)
Post-acute transfer policy:
Yes (early transfers can be paid less)

Same condition, other severity levels

CMS splits one condition into separate DRGs by how sick the patient is. With MCC pays more than with CC, which pays more than without CC/MCC.

DRGTitleRelative weightMean stay
447Multiple Level Spinal Fusion Except Cervical with MCC (this page)6.96678.1 days
448Multiple Level Spinal Fusion Except Cervical without MCC4.35063.3 days

Procedure codes (242)

ICD-10-PCS procedures that can group a stay to DRG 447.