# Impairment Rating

_Glossary_

Canonical: https://www.claimspages.com/learn/glossary/impairment-rating/

A percentage estimate of permanent loss of function assigned using medical guidelines after MMI.

Impairment ratings translate clinical findings into compensation under state schedules. AMA Guides are common but not universal. Ratings drive PPD settlements.



Restricted lumbar range of motion yields 7% whole person impairment under AMA Guides for rating purposes.