In South Carolina, an impairment rating is the percentage assigned to a worker's physical or mental condition after injury. The rating reflects the remaining functional capacity and determines the share of lost wages and medical costs the state will cover. Ratings are based on medical evidence, state guidelines, and the worker's ability to perform job tasks. A higher rating means a larger benefit, but it also affects the duration of payments and eligibility for permanent disability benefits.
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How Ratings Are Determined
Workers' compensation boards use the South Carolina Impairment Rating Schedule, a table that lists common injuries and their standard ratings. A medical examiner evaluates the injury, documents symptoms, and submits a report. The examiner's findings are matched to the schedule, and the board may adjust the rating if the injury's impact differs from the standard description.
Key Components of the Evaluation
- Medical Diagnosis: Imaging, lab tests, and clinical exams establish the injury type and severity.
- Functional Assessment: Tests measure range of motion, strength, and pain during activities.
- Work Capacity: The examiner estimates the worker's ability to perform current duties or a comparable job.
- Duration: The board considers how long the impairment is expected to last.
Common Injury Ratings
| Injury | Typical Rating |
|---|---|
| Acute back sprain | 10‑20% |
| Fractured wrist (non‑union) | 15‑25% |
| Severe traumatic brain injury | 50‑80% |
| Permanent limb loss | 75‑100% |
Impact on Benefits
The impairment rating directly scales the weekly wage replacement benefit. For example, a 40% rating on a $1,200 monthly wage yields a benefit of $480 per month (40% of $1,200). Additionally, higher ratings can qualify a worker for permanent disability benefits if the impairment is irreversible.
Appealing a Rating
If a worker believes the rating is too low, they can file an appeal. The appeal requires additional medical evidence or a second opinion. The board will review the new data and may adjust the rating up or down.
Return-to-Work Considerations
Employers use the impairment rating to design modified duties. A rating that limits certain movements may allow the worker to perform lighter tasks until full recovery. A well‑documented rating also helps in negotiating temporary or permanent job transfers.
Key Takeaways
- Ratings reflect remaining functional capacity and dictate benefit amounts.
- South Carolina follows a standardized schedule but allows adjustments.
- Workers can appeal if they believe the rating is inaccurate.
- Ratings guide employers in creating safe, productive return‑to‑work plans.