Class IClient is completely able to perform usual activities of daily living (self-care, vocational, and nonvocational) a Class II Client able to perform usual self-care and vocational activities but limited in nonvocational activitiesClass III Client able to perform usual self-care activities but limited in vocational and nonvocational activitiesClass IV Client has limited ability to perform usual self-care, vocational, and nonvocational activities a Self-care activities include dressing, feeding, bathing, grooming, and toileting. Nonvocational (recreational and/or leisure) and vocational (work, school, homemaking) activities are patient desired and are specific to age and sex.

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