5. The category of severity of an esthetic or functional unit impairment is determined by the situation having the maximum impact among the situations that correspond to the result of the evaluation of the permanent impairments.
When the evaluation of permanent impairments reveals situations that are not described in any of the categories of severity, they are compared to similar situations listed therein whose severity is equivalent in terms of the after-effects experienced in daily life such as loss of enjoyment of life, mental suffering, pain, and other consequences.
Only one category of severity may be assigned for each unit impairment and the percentage corresponding to that category may only be awarded once.