Vestibular function testing using ENG and VNG testing batteries, caloric testing, or rotational chair testing may be considered medically necessary when ALL the following conditions have been met:
- The individual has symptoms of a vestibular disorder (e.g., dizziness, vertigo, imbalance); and
- A clinical evaluation, including maneuvers such as the Dix-Hallpike test if indicated, has failed to identify the cause of the symptoms.
Vestibular function testing for the assessment of typical benign paroxysmal positional vertigo that can be diagnosed clinically is not medically necessary.
Repeat vestibular function testing when treatment resolves symptoms is considered not medically necessary.
Vestibular function testing not meeting the criteria as indicated in this policy is considered not medically necessary.