Catastrophic Impairment Determination

For accidents pre June 1, 2016, a mental and behavioral catastrophic impairment is defined by:

Mental or behavioral impairments combined with physical impairments that, in accordance with the American Medical Association’s Guides to the Evaluation of Permanent Impairment, 4th edition, 1993, results in 55 percent or more impairment of the whole
person.; OR

An impairment that, in accordance with the American Medical Association’s Guides to the Evaluation of Permanent
Impairment, 4th edition, 1993, results in a class 4 impairment (marked impairment) in one or more areas of function or a class 5 impairment (extreme impairment) in one more area of function, due to mental or behavioral disorder.

For accidents post-June 1, 2016, a mental and behavioral catastrophic impairment is defined by:

Mental or behavioral impairments combined with physical impairments that, in accordance with the American Medical Association’s Guides to the Evaluation of Permanent Impairment, 6th Edition, 2008, results in 55 percent or more impairment of the whole person.; OR

An impairment that, in accordance with the American Medical Association’s Guides to the Evaluation of Permanent
Impairment, the 4th edition, 1993, results in a Class 4 impairment (marked impairment) in three or more areas of function or a
Class 5 impairment (extreme impairment) in one or more areas of function, due to the mental or behavioral disorder.