All ICD10 Codes
MS-DRG 155Medical

Other Ear, Nose, Mouth and Throat Diagnoses with CC

Major Diagnostic Category 03·Grouped by diagnosis·FY 2027

MS-DRG 155 is a Medical Medicare Severity Diagnosis Related Group under Major Diagnostic Category 03 (MDC 03) with a Complication or Comorbidity (CC). It maps to 598 ICD-10-CM diagnosis codes. For FY 2027 it carries a relative weight of 0.9322 with a geometric mean length of stay of 2.8 days and an arithmetic mean of 3.5 days. Hospitals use this grouping to determine reimbursement for inpatient stays under Medicare.

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FY 2027 payment data

From Table 5 of the FY 2027 IPPS Final Rule (CMS).

Relative weight:
0.9322 (payment multiplier vs. the average case (1.0))
Geometric mean stay:
2.8 days (used for transfer payments)
Average stay:
3.5 days (arithmetic mean)
Post-acute transfer policy:
No (not subject to it)

Same condition, other severity levels

CMS splits one condition into separate DRGs by how sick the patient is. With MCC pays more than with CC, which pays more than without CC/MCC.

DRGTitleRelative weightMean stay
154Other Ear, Nose, Mouth and Throat Diagnoses with MCC1.59214 days
155Other Ear, Nose, Mouth and Throat Diagnoses with CC (this page)0.93222.8 days
156Other Ear, Nose, Mouth and Throat Diagnoses without CC/MCC0.66592.1 days

Diagnosis codes (598)

As the principal diagnosis, these ICD-10-CM codes can group to DRG 155. 100% of the codes listed are billable.