MS-DRG 149 – Dysequilibrium
A Medical DRG in MDC 03 (Diseases & Disorders of the Ear, Nose, Mouth & Throat). Inpatient cases group to DRG 149 when the ICD-10-CM principal diagnosis is one of the 51 codes listed below. Its FY 2026 relative weight is 0.7516 with a geometric mean length of stay of 1.9 days.
The grouper first assigns the case to MDC 03 from the principal diagnosis and finds no qualifying operating-room procedure (this is a Medical DRG; ICD-10-PCS codes do not drive assignment here).
Principal Diagnosis Codes 51 codes · 5 categories
H81 Disorders of vestibular function29 codes
- H81.01 Meniere's disease, right ear
- H81.02 Meniere's disease, left ear
- H81.03 Meniere's disease, bilateral
- H81.09 Meniere's disease, unspecified ear
- H81.10 Benign paroxysmal vertigo, unspecified ear
- H81.11 Benign paroxysmal vertigo, right ear
- H81.12 Benign paroxysmal vertigo, left ear
- H81.13 Benign paroxysmal vertigo, bilateral
- H81.20 Vestibular neuronitis, unspecified ear
- H81.21 Vestibular neuronitis, right ear
- H81.22 Vestibular neuronitis, left ear
- H81.23 Vestibular neuronitis, bilateral
- H81.311 Aural vertigo, right ear
- H81.312 Aural vertigo, left ear
- H81.313 Aural vertigo, bilateral
- H81.319 Aural vertigo, unspecified ear
- H81.391 Other peripheral vertigo, right ear
- H81.392 Other peripheral vertigo, left ear
- H81.393 Other peripheral vertigo, bilateral
- H81.399 Other peripheral vertigo, unspecified ear
- H81.4 Vertigo of central origin
- H81.8X1 Other disorders of vestibular function, right ear
- H81.8X2 Other disorders of vestibular function, left ear
- H81.8X3 Other disorders of vestibular function, bilateral
- H81.8X9 Other disorders of vestibular function, unspecified ear
- H81.90 Unspecified disorder of vestibular function, unspecified ear
- H81.91 Unspecified disorder of vestibular function, right ear
- H81.92 Unspecified disorder of vestibular function, left ear
- H81.93 Unspecified disorder of vestibular function, bilateral
H82 Vertiginous syndromes in diseases classified elsewhere4 codes
H83 Other diseases of inner ear16 codes
- H83.01 Labyrinthitis, right ear
- H83.02 Labyrinthitis, left ear
- H83.03 Labyrinthitis, bilateral
- H83.09 Labyrinthitis, unspecified ear
- H83.2X1 Labyrinthine dysfunction, right ear
- H83.2X2 Labyrinthine dysfunction, left ear
- H83.2X3 Labyrinthine dysfunction, bilateral
- H83.2X9 Labyrinthine dysfunction, unspecified ear
- H83.8X1 Other specified diseases of right inner ear
- H83.8X2 Other specified diseases of left inner ear
- H83.8X3 Other specified diseases of inner ear, bilateral
- H83.8X9 Other specified diseases of inner ear, unspecified ear
- H83.90 Unspecified disease of inner ear, unspecified ear
- H83.91 Unspecified disease of right inner ear
- H83.92 Unspecified disease of left inner ear
- H83.93 Unspecified disease of inner ear, bilateral
R42 Dizziness and giddiness1 code
- R42 Dizziness and giddiness
T75 Other and unspecified effects of other external causes1 code
- T75.3XXA Motion sickness, initial encounter
Procedure Codes
Frequently Asked Questions
What is MS-DRG 149?
MS-DRG 149 (Dysequilibrium) is a medical DRG in MDC 03 (Diseases & Disorders of the Ear, Nose, Mouth & Throat). Its FY 2026 relative weight is 0.7516 with a geometric mean length of stay of 1.9 days.
How many diagnosis codes group to DRG 149?
51 ICD-10-CM principal diagnosis codes group to this DRG, spanning 5 three-character categories.
What is the relative weight of DRG 149?
The FY 2026 relative weight of this DRG is 0.7516, meaning reimbursement of roughly 0.75 times the average Medicare inpatient case. Multiply by a hospital's blended base rate for the approximate payment.
