How does the department determine the severity of multiple impairments?

(1) If you have more than one impairment, we decide the overall severity rating by determining if your impairments have a combined effect on your ability to be gainfully employed.
(2) When you have two or more diagnosed impairments that limit work activities, we assign an overall severity rating as follows:
Your Condition
Severity Rating
(i) All impairments are mild and there is no cumulative effect on basic work activities.
Mild
(ii) All impairments are mild and there is a significant cumulative effect on one or more basic work activities.
Moderate
(iii) Two or more impairments are of moderate severity and there is a very significant cumulative effect on basic work activities.
Marked
(iv) Two are more impairments are of marked severity.
Severe
[Statutory Authority: RCW 74.04.005, 74.04.050, 74.04.055, 74.04.057, 74.04.510, 74.08.090, 74.08A.100, 74.04.770, 74.04.0052, 74.04.655, 74.08.043, 74.08.335, and 2011 1st sp.s. c 36. WSR 12-10-042, ยง 388-449-0050, filed 4/27/12, effective 6/1/12.]
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