All ICD10 Codes
MS-DRG 477Surgical

Biopsies of Musculoskeletal System and Connective Tissue with MCC or Insertion of Antibiotic-eluting Bone Void Filler

Major Diagnostic Category 08·Grouped by procedure·FY 2027

MS-DRG 477 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 3.4040 with a geometric mean length of stay of 8.1 days and an arithmetic mean of 10.1 days. Hospitals use this grouping to determine reimbursement for inpatient stays under Medicare.

Advertisements

FY 2027 payment data

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

Relative weight:
3.4040 (payment multiplier vs. the average case (1.0))
Geometric mean stay:
8.1 days (used for transfer payments)
Average stay:
10.1 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
477Biopsies of Musculoskeletal System and Connective Tissue with MCC or Insertion of Antibiotic-eluting Bone Void Filler (this page)3.40408.1 days
478Biopsies of Musculoskeletal System and Connective Tissue with CC2.43375.3 days
479Biopsies of Musculoskeletal System and Connective Tissue without CC/MCC1.85423.3 days

Procedure codes (433)

ICD-10-PCS procedures that can group a stay to DRG 477.