Calculation Result
This tool gives an educational estimate only. Official ratings depend on medical reports, legal rules, accepted guides, and jurisdictional review.
Detailed Summary
| Item | Value | Meaning |
|---|
Advanced Calculator
Enter medical impairment values, body part conversion factors, prior impairment, work-related apportionment, and benefit assumptions.
Example Data Table
The table below shows how different values can change the final estimate.
| Scenario | Main Rating | Second Rating | Modifiers | Prior Rating | Final Estimate |
|---|---|---|---|---|---|
| Minor upper limb case | 8% | 4% | 3% | 0% | About 13.7% |
| Back and shoulder case | 12% | 8% | 10% | 2% | About 24.9% |
| Major multiple injury case | 25% | 18% | 15% | 5% | About 46.3% |
Formula Used
This calculator first converts each body part rating into a whole person estimate. The simple conversion is:
Whole Person Rating = Body Part Rating × Conversion Factor
Multiple impairments are not added directly. They are combined with a reducing balance method:
Combined Rating = A + B × (100 - A) / 100
After that, the tool adds pain, daily activity, occupation, and age modifiers. Prior impairment is subtracted. The work-related percentage is then applied:
Final Rating = (Adjusted Rating - Prior Rating) × Work-Related Portion
The benefit value is a planning estimate:
Estimated Benefit = Final Rating ÷ 100 × Benefit Weeks × Weekly Rate × Jurisdiction Multiplier
How to Use This Calculator
- Enter the claim name or case label.
- Select the rating guide or estimate type.
- Add each injury rating as a percentage.
- Choose a whole person conversion factor for each injury.
- Add pain, daily activity, job, and age modifiers.
- Enter any prior impairment rating.
- Set the work-related apportionment percentage.
- Add benefit weeks, weekly rate, and multiplier.
- Press the calculate button.
- Download the result as CSV or PDF.
Permanent Impairment Rating Guide
What Permanent Impairment Means
Permanent impairment describes a lasting loss of body function. It may follow an injury, disease, surgery, or workplace accident. The rating is usually written as a percentage. A higher percentage means a greater functional loss. The value does not always equal disability. Disability can also include job duties, wages, age, skills, and work limits.
Why Ratings Are Combined
Multiple injuries should not always be added together. A person cannot exceed one hundred percent whole body function. So combined rating math applies each new impairment to the remaining healthy portion. This gives a more balanced estimate. It also avoids inflated totals in multi-injury cases.
Important Inputs
The main medical rating is the starting point. Body part conversion factors help estimate whole person impairment. Pain and daily activity modifiers reflect practical limits. Occupation and age adjustments may help users model settlement discussions. Prior impairment reduces the new payable value. Apportionment shows how much is related to the current claim.
Benefit Planning
Benefit estimates need caution. Every region has its own law. Some use schedules. Some use wage rates. Some require medical panels or formal reports. This calculator gives a planning number, not a final award. It is useful for comparing scenarios before a professional review.
Best Use
Use this tool to organize figures before meetings. Export the result for notes. Compare different ratings. Test how apportionment changes the value. Review all numbers with a qualified medical or legal professional before making decisions.
FAQs
1. What is a permanent impairment rating?
It is a percentage estimate of lasting physical or functional loss. Doctors, guides, and legal rules may influence the final rating.
2. Is this calculator an official rating tool?
No. It is an educational estimator. Official ratings require medical evidence, accepted guides, and local legal review.
3. Why are multiple ratings combined?
Combined math prevents simple addition from overstating impairment. Each added rating applies to the remaining unimpaired portion.
4. What is a whole person factor?
It converts a body part rating into an estimated whole person value. Actual factors depend on the chosen medical guide.
5. What does apportionment mean?
Apportionment separates the current claim from prior injuries, unrelated conditions, or non-work causes.
6. Can pain increase the rating?
Some systems allow pain or functional modifiers. Others restrict them. Always confirm the rule used in your jurisdiction.
7. What is the weekly compensation rate?
It is the weekly amount used for benefit planning. It may be based on wage records, caps, and local statutes.
8. Can I download the results?
Yes. Use the CSV button for spreadsheet records. Use the PDF button for a clean printable summary.