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MDC 02: Assignment of Diagnosis Codes

10 MS-DRGs (5 surgical, 5 medical) with FY2027 relative weights averaging 1.2365. Click any DRG for its weight history, CC/MCC family, grouper code lists and denial exposure.

Reviewed by QuickIntell RCM Editorial Team · Last reviewed

Data effective

MS-DRGs in MDC 02

Weights in this category range from 0.7400 (DRG 122) to 2.1280 (DRG 113); the change column compares FY2027 with FY2026.

MS-DRGs assigned to MDC 02 with FY2027 weights
DRGTitleTypeWeightGMLOSChange
113Orbital Procedures with CC/MCCSurgical2.12804.1-9.5%
114Orbital Procedures without CC/MCCSurgical1.26502.0-6.5%
115Extraocular Procedures Except OrbitSurgical1.47903.7-3.7%
116Intraocular Procedures with CC/MCCSurgical1.62704.0-10.0%
117Intraocular Procedures without CC/MCCSurgical1.06201.9-2.1%
121Acute Major Eye Infections with CC/MCCMedical1.22504.1+5.3%
122Acute Major Eye Infections without CC/MCCMedical0.74002.9-5.9%
123Neurological Eye DisordersMedical0.82202.0+2.9%
124Other Disorders of the Eye with MCC or Thrombolytic AgentMedical1.24703.1-5.7%
125Other Disorders of the Eye without MCCMedical0.77002.3+0.3%

How to read this table

The relative weight is the payment multiplier CMS applies to a hospital's wage-adjusted standardized amount; a weight of 2.0 pays roughly twice an average inpatient case before outliers and add-ons. Geometric mean length of stay is the figure used in post-acute transfer calculations, so stays shorter than it in a transfer DRG are paid per diem. The change column compares the FY2027 final weight with FY2026; moves larger than two percent usually come from code reassignments in the final rule's Table 6 series or from updated cost data, and are worth re-checking in contract models and budgets before October 1. Surgical DRGs require a qualifying operating-room procedure; medical DRGs are reached when no such procedure is coded.

Frequently asked questions

How many MS-DRGs are in MDC 02?

10 MS-DRGs are assigned to MDC 02 (Assignment of Diagnosis Codes) in the FY2027 v44 grouper: 5 surgical and 5 medical.

Which MDC 02 DRG has the highest weight?

DRG 113, Orbital Procedures with CC/MCC, carries the highest FY2027 relative weight in this category at 2.1280; the lowest is DRG 122 at 0.7400.

How is a stay assigned to this MDC?

The grouper maps the principal diagnosis to MDC 02, then checks for a qualifying operating-room procedure to choose between the surgical and medical DRG partitions, and finally applies CC/MCC severity splits.

Sources

Every figure on this page is taken from the CMS publications below, as released by the Centers for Medicare & Medicaid Services. Projection built 2026-10-01. Verify against the primary file before billing or contracting decisions.

Disclaimer

Operational reference compiled from CMS publications. Relative weights are national factors; actual payment depends on hospital-specific rates and adjustments. Not legal, clinical or billing advice.