All ICD10 Codes
MS-DRG 559Medical

Aftercare, Musculoskeletal System and Connective Tissue with MCC

Major Diagnostic Category 08·Grouped by diagnosis·FY 2027

MS-DRG 559 is a Medical Medicare Severity Diagnosis Related Group under Major Diagnostic Category 08 (MDC 08) with a Major Complication or Comorbidity (MCC). It maps to 7,892 ICD-10-CM diagnosis codes. For FY 2027 it carries a relative weight of 1.8088 with a geometric mean length of stay of 4.9 days and an arithmetic mean of 6.6 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:
1.8088 (payment multiplier vs. the average case (1.0))
Geometric mean stay:
4.9 days (used for transfer payments)
Average stay:
6.6 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
559Aftercare, Musculoskeletal System and Connective Tissue with MCC (this page)1.80884.9 days
560Aftercare, Musculoskeletal System and Connective Tissue with CC1.12383.8 days
561Aftercare, Musculoskeletal System and Connective Tissue without CC/MCC0.82583 days

Diagnosis codes (7,892)

As the principal diagnosis, these ICD-10-CM codes can group to DRG 559. 100% of the codes listed are billable.

Showing the first 1,000 of 7,892 codes. Use search to find a specific code.