MS-DRG 371Medical

Major Gastrointestinal Disorders and Peritoneal Infections with MCC

Major Diagnostic Category 06·Grouped by diagnosis·FY 2027

MS-DRG 371 is a Medical Medicare Severity Diagnosis Related Group under Major Diagnostic Category 06 (MDC 06) with a Major Complication or Comorbidity (MCC). It maps to 86 ICD-10-CM diagnosis codes. For FY 2027 it carries a relative weight of 1.7089 with a geometric mean length of stay of 5.1 days and an arithmetic mean of 6.7 days. Hospitals use this grouping to determine reimbursement for inpatient stays under Medicare.

FY 2027 payment data

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

Relative weight:: 1.7089 (payment multiplier vs. the average case (1.0))
Geometric mean stay:: 5.1 days (used for transfer payments)
Average stay:: 6.7 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.

DRG	Title	Relative weight	Mean stay
371	Major Gastrointestinal Disorders and Peritoneal Infections with MCC (this page)	1.7089	5.1 days
372	Major Gastrointestinal Disorders and Peritoneal Infections with CC	0.9964	3.5 days
373	Major Gastrointestinal Disorders and Peritoneal Infections without CC/MCC	0.6941	2.6 days

Diagnosis codes (86)

As the principal diagnosis, these ICD-10-CM codes can group to DRG 371. 100% of the codes listed are billable.