ICD-10-CM > H60-H95 > H80-H83 > H81 > H81.9 H81.9 Unspecified disorder of vestibular function Non-Billable/Non-Specific Applicable To Vertiginous syndrome NOS Codes H81.90Unspecified disorder of vestibular function, unspecified earH81.91Unspecified disorder of vestibular function, right earH81.92Unspecified disorder of vestibular function, left earH81.93Unspecified disorder of vestibular function, bilateral