Impairment Percentage Or Rating - Impairment percentages or ratings developed by medical specialists are consensus-derived estimates that reflect the severity of the medical condition and the degree to which the impairment decreases an individual’s ability to perform common activities of daily living (ADL), excluding work.
Impairment ratings were designed to reflect functional limitations and not disability. The whole person impairment percentages listed in the Guides estimate the impact of the impairment on the individual’s overall ability to perform activities of daily living, excluding work, as listed in Table 1-2.
Impairment (ADL) V. Disability (Work) - Thirty percent (30%) whole person impairment secondary to a heart condition, does not automatically equate to 30% disability [if the job is sedentary, then the 30% may not be a major disability. On the other hand, if the job is that of a mover, then 30% will take him out from his regular job, to 100% disability (AMA page 5). Therefore, the physician should, in addition to impairment rating, opine on limitations or ability to go back to a certain job]. So that I always opine: Impairment and work restrictions.