MS-DRG 981 – Extensive O.R. Procedures Unrelated to Principal Diagnosis with MCC
A Surgical DRG in Ungrouped (Other). Its FY 2026 relative weight is 4.6918 with a geometric mean length of stay of 8.4 days.
Severity family
The grouper first assigns the case to Ungrouped from the principal diagnosis, then matches a qualifying operating-room procedure from the ICD-10-PCS list below (this is a Surgical DRG), then applies the severity split from secondary diagnoses: with MCC → 981; with CC → 982; without CC/MCC → 983.
Procedure Codes
Qualifying Diagnosis Codes
Frequently Asked Questions
What is MS-DRG 981?
MS-DRG 981 (Extensive O.R. Procedures Unrelated to Principal Diagnosis with MCC) is a surgical DRG in Ungrouped (Other). Its FY 2026 relative weight is 4.6918 with a geometric mean length of stay of 8.4 days.
What is the difference between DRG 981, 982, 983?
All 3 share the same base category; the severity of secondary diagnoses separates them: 981 (with MCC), 982 (with CC), 983 (without CC/MCC). A major complication or comorbidity (MCC) places the case in the highest-weighted DRG of the family; a CC in the middle; neither in the lowest.
What is the relative weight of DRG 981?
The FY 2026 relative weight of this DRG is 4.6918, meaning reimbursement of roughly 4.69 times the average Medicare inpatient case. Multiply by a hospital's blended base rate for the approximate payment.
