An impairment rating is a medical percentage that shows how much permanent loss of function you have after an injury—even after treatment is done.
An impairment rating is a medical evaluation that quantifies the degree of permanent functional loss an individual has suffered due to an injury or illness, typically in the context of workers’ compensation or disability claims. Expressed as a percentage.

What it measures
• Permanent physical damage, not pain
• Loss of motion, strength, stability, or function
• Based on objective findings (exams, imaging, FCE results)