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MS-DRG v44.0 · MDC 01: Diseases and Disorders of the Nervous System

102 — Headaches with MCC

Source: CMS MS-DRG v44.0 and FY2027 IPPS final rule. Page updated September 29, 2026.
Relative weight
1.1201
Geometric mean LOS
2.9 days
Arithmetic mean LOS
4.1 days
Type
Medical

About MS-DRG 102

MS-DRG 102, Headaches with MCC, is a medical DRG in MDC 01 (Diseases and Disorders of the Nervous System) under MS-DRG version 44.0, which applies to inpatient discharges from October 1, 2026 through September 30, 2027.

Its FY2027 relative weight is 1.1201, so Medicare's base payment for this DRG is about 1.12 times the average inpatient case, before hospital-specific adjustments. The geometric mean length of stay is 2.9 days and the arithmetic mean is 4.1 days.

It belongs to a 2-level severity family: DRG 102 (with MCC, weight 1.1201) and DRG 103 (without MCC, weight 0.822). The highest-severity level carries 1.4 times the weight of the lowest, which is why documenting CC and MCC conditions matters.

95 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 102 (95)

Chapter 5: Mental, Behavioral and Neurodevelopmental disorders

Chapter 6: Diseases of the nervous system

Chapter 9: Diseases of the circulatory system

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

Common questions about DRG 102

What is the relative weight of DRG 102?

1.1201 for FY2027 (MS-DRG v44.0), from the IPPS final rule Table 5.

What is the average length of stay for DRG 102?

The geometric mean length of stay is 2.9 days; the arithmetic mean is 4.1 days.

Is DRG 102 medical or surgical?

DRG 102 is a medical DRG.