How we calculate a 'whole-person impairment' rating
We’ll assess each injury or illness you have. When we do this, we’ll give each injury or illness an impairment rating.
We use objective criteria for each impairment assessment we make. If someone was to have an assessment done by two different assessors, our aim is that they would end up with the same rating. This rating is determined by the American Medical Association's 'Guides to the Evaluation of Permanent Impairment (4th edition)'.
If you have only one injury or illness, the impairment rating for this will be your ‘whole-person impairment’ rating.
If you have multiple injuries or illnesses, we’ll combine these to give you your total combined ‘whole-person impairment’ rating.
How we combine ‘whole-person impairment’
- The condition with the highest rating sets the base level of ‘whole-person impairment’.
- The percentage of impairment of the highest rating is deducted from 100%. This determines the amount of the ‘whole-person impairment’ scale that can be allocated to other conditions.
- Each successive injury or illness takes a proportion of the remaining ‘whole-person impairment’ scale.
Our team do these calculations using calculators designed specifically for this purpose.
It’s important to note that 'whole-person impairment' ratings are combined, not added.