MS-DRG v44.0 · MDC 03: Diseases and Disorders of the Ear, Nose, Mouth and Throat
135 — Sinus and Mastoid Procedures with CC/MCC
- Relative weight
- 2.1802
- Geometric mean LOS
- 3.7 days
- Arithmetic mean LOS
- 5.3 days
- Type
- Surgical
About MS-DRG 135
MS-DRG 135, Sinus and Mastoid Procedures with CC/MCC, is a surgical DRG in MDC 03 (Diseases and Disorders of the Ear, Nose, Mouth and Throat) under MS-DRG version 44.0, which applies to inpatient discharges from October 1, 2026 through September 30, 2027.
Its FY2027 relative weight is 2.1802, so Medicare's base payment for this DRG is about 2.18 times the average inpatient case, before hospital-specific adjustments. The geometric mean length of stay is 3.7 days and the arithmetic mean is 5.3 days.
It belongs to a 2-level severity family: DRG 135 (with CC/MCC, weight 2.1802) and DRG 136 (without CC/MCC, weight 1.0619). The highest-severity level carries 2.1 times the weight of the lowest, which is why documenting CC and MCC conditions matters.
ICD-10-CM codes that group to DRG 135 (0)
This DRG is assigned by procedure, not by a diagnosis list.
Common questions about DRG 135
What is the relative weight of DRG 135?
- 2.1802 for FY2027 (MS-DRG v44.0), from the IPPS final rule Table 5.
What is the average length of stay for DRG 135?
- The geometric mean length of stay is 3.7 days; the arithmetic mean is 5.3 days.
Is DRG 135 medical or surgical?
- DRG 135 is a surgical DRG.