What is the standard rating for moderate vertigo?

• A. 15 percent
• B. 20 percent
• C. 50 percent
• D. 30 percent

Answer: (C)

Moderate vertigo is judged by how much it limits a person’s function and safety, not just how often symptoms occur. When vertigo is described as moderate, it means recurring, disabling episodes that significantly affect balance, walking, driving, work ability, and daily living. In the standard impairment rating system used in this context, that level of disability is assigned a high level of impairment—50 percent of the whole person.

Lower percentages would reflect milder impairment where function is less affected, while higher percentages would correspond to more severe impairment than moderate. So the rating for moderate vertigo is set at 50 percent because it represents a substantial, not merely minor, impact on overall functioning.