Understanding Total Body Impairment
Total body impairment is a structured estimate. It converts separate medical ratings into one whole person value. A Labor and Industries style review often includes several rated regions. Each region may describe lost function, lasting pain, reduced motion, or organ loss. This calculator helps organize those numbers before a formal review.
Why Combination Matters
Impairment ratings should not simply be stacked without thought. A person cannot be more than one hundred percent impaired as a whole body case. The combined values method solves this problem. It applies the largest rating first. Each later rating affects only the remaining unimpaired body portion. That approach gives a balanced estimate when several injuries are present.
Useful Planning Details
The calculator also includes deductions. A prior impairment can be subtracted. An apportionment percentage can reduce the remaining value. Optional paired limb handling can show a bilateral factor estimate. This is useful when both arms or both legs are involved. The award field is optional. It lets you multiply the net percentage by a chosen value per impairment point.
Physics View
Although impairment is a claims subject, the logic resembles physical capacity modeling. The whole body acts like a limited system. Each rated loss removes part of the available capacity. The combined formula protects the maximum boundary. It also shows how smaller losses have less effect after major losses are already counted.
Reading Results
The result panel shows gross impairment, deductions, net impairment, and estimated award value. The step table shows each combination stage. Review the order, inputs, and reductions carefully. Keep medical records nearby when entering values. Rounding can change the final number, especially near award thresholds.
Important Limitations
This page is an educational estimator. It does not replace medical rating rules, agency schedules, legal advice, or official claim decisions. Labor and Industries cases can require approved medical exams, accepted conditions, category ratings, and statutory schedules. Use the output as a worksheet. Confirm final figures with a qualified professional before making claim choices.
Best Use Cases
Use this worksheet for settlement talks, internal checks, case preparation, or learning. Save the CSV for spreadsheets. Download the PDF for a simple record. Recheck entries whenever a medical rating changes later during review.