All ICD10 Codes

DRG 090

Medical DRG

Concussion without CC/MCC

TypeMedicalMDC01Dx Codes4

What is MS-DRG 090?

MS-DRG 090 is a Medical Medicare Severity Diagnosis Related Group under Major Diagnostic Category 01 (MDC 01) without a significant Complication or Comorbidity. It maps to 4 ICD-10-CM diagnosis codes. For FY 2026 it carries a relative weight of 0.8232 with a geometric mean length of stay of 1.9 days and an arithmetic mean of 2.3 days. Hospitals use this grouping to determine reimbursement for inpatient stays under Medicare.

Classification
Medical DRG
Diagnosis-driven grouping
MDC
Major Diagnostic Category 01
Linked Codes
4 diagnosis
Billable Dx
100%
4 of 4 shown

FY 2026 Payment Data

Official values from Table 5 of the FY 2026 IPPS Final Rule (CMS).

Relative Weight
0.8232
Payment multiplier vs. average case (1.0)
Geometric Mean LOS
1.9 days
Used for transfer payment calculations
Arithmetic Mean LOS
2.3 days
Average length of stay
Post-Acute Transfer
No
Not subject to the transfer policy

Related MS-DRGs in This Severity Group

The same clinical condition is split into separate DRGs by complication severity. MCC pays more than CC, which pays more than no CC/MCC.

DRGTitleRel. WeightGMLOS
088Concussion with MCC1.35183.4 days
089Concussion with CC1.09862.5 days
090Concussion without CC/MCCThis page0.82321.9 days

Linked ICD-10-CM Diagnosis Mappings

  • S06.0X0A

    Concussion without loss of consciousness, initial encounter

    BillableChapter 19
  • S06.0X1A

    Concussion with loss of consciousness of 30 minutes or less, initial encounter

    BillableChapter 19
  • S06.0X9A

    Concussion with loss of consciousness of unspecified duration, initial encounter

    BillableChapter 19
  • S06.0XAA

    Concussion with loss of consciousness status unknown, initial encounter

    BillableChapter 19