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MS-DRG v44.0 · MDC 03: Diseases and Disorders of the Ear, Nose, Mouth and Throat

157 — Dental and Oral Diseases with MCC

Relative weight
1.809
Geometric mean LOS
4.6 days
Arithmetic mean LOS
6.4 days
Type
Medical

About MS-DRG 157

MS-DRG 157, Dental and Oral Diseases with MCC, is a medical 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 1.809, so Medicare's base payment for this DRG is about 1.81 times the average inpatient case, before hospital-specific adjustments. The geometric mean length of stay is 4.6 days and the arithmetic mean is 6.4 days.

It belongs to a 3-level severity family: DRG 157 (with MCC, weight 1.809), DRG 158 (with CC, weight 0.9366) and DRG 159 (without CC/MCC, weight 0.6893). The highest-severity level carries 2.6 times the weight of the lowest, which is why documenting CC and MCC conditions matters.

415 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 157 (415)

Chapter 1: Certain infectious and parasitic diseases

Chapter 2: Neoplasms

Chapter 11: Diseases of the digestive system

Chapter 13: Diseases of the musculoskeletal system and connective tissue

Chapter 17: Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders

Chapter 18: Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified

Chapter 19: Injury, poisoning and certain other consequences of external causes

Common questions about DRG 157

What is the relative weight of DRG 157?

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

What is the average length of stay for DRG 157?

The geometric mean length of stay is 4.6 days; the arithmetic mean is 6.4 days.

Is DRG 157 medical or surgical?

DRG 157 is a medical DRG.