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MS-DRG v44.0 · MDC 02: Diseases and Disorders of the Eye

122 — Acute Major Eye Infections without CC/MCC

Source: CMS MS-DRG v44.0 and FY2027 IPPS final rule. Page updated September 29, 2026.
Relative weight
0.7406
Geometric mean LOS
2.9 days
Arithmetic mean LOS
3.7 days
Type
Medical

About MS-DRG 122

MS-DRG 122, Acute Major Eye Infections without CC/MCC, is a medical DRG in MDC 02 (Diseases and Disorders of the Eye) under MS-DRG version 44.0, which applies to inpatient discharges from October 1, 2026 through September 30, 2027.

Its FY2027 relative weight is 0.7406, so Medicare's base payment for this DRG is about 0.74 times the average inpatient case (below average), before hospital-specific adjustments. The geometric mean length of stay is 2.9 days and the arithmetic mean is 3.7 days.

It belongs to a 2-level severity family: DRG 121 (with CC/MCC, weight 1.2255) and DRG 122 (without CC/MCC, weight 0.7406). The highest-severity level carries 1.7 times the weight of the lowest, which is why documenting CC and MCC conditions matters.

77 ICD-10-CM diagnosis codes are part of this DRG's grouping logic; they are listed below.

ICD-10-CM codes that group to DRG 122 (77)

Chapter 7: Diseases of the eye and adnexa

Common questions about DRG 122

What is the relative weight of DRG 122?

0.7406 for FY2027 (MS-DRG v44.0), from the IPPS final rule Table 5.

What is the average length of stay for DRG 122?

The geometric mean length of stay is 2.9 days; the arithmetic mean is 3.7 days.

Is DRG 122 medical or surgical?

DRG 122 is a medical DRG.