DRG 187
Medical DRGPleural Effusion with CC
What is MS-DRG 187?
MS-DRG 187 is a Medical Medicare Severity Diagnosis Related Group under Major Diagnostic Category 04 (MDC 04) with a Complication or Comorbidity (CC). It maps to 5 ICD-10-CM diagnosis codes. For FY 2026 it carries a relative weight of 0.9891 with a geometric mean length of stay of 3 days and an arithmetic mean of 3.8 days. Hospitals use this grouping to determine reimbursement for inpatient stays under Medicare.
Classification
Medical DRG
Diagnosis-driven grouping
Linked Codes
5 diagnosis
Billable Dx
100%
5 of 5 shown
FY 2026 Payment Data
Official values from Table 5 of the FY 2026 IPPS Final Rule (CMS).
Relative Weight
0.9891
Payment multiplier vs. average case (1.0)
Geometric Mean LOS
3 days
Used for transfer payment calculations
Arithmetic Mean LOS
3.8 days
Average length of stay
Post-Acute Transfer
Yes
Subject to the post-acute care transfer policy
Related MS-DRGs in This Severity Group
The same clinical condition is split into separate DRGs by complication severity. MCC pays more than CC, which pays more than no CC/MCC.