Disability Benefits and Mental Retardation

To win a claim for disability benefits, a claimant applying for social security benefits must have a severe medically determinable condition.

Listing 12.06 for mental retardation indicates below-average intellectual functioning as a medically determinable condition. The listing defines mental retardation as “significantly sub-average general intellectual functioning with deficits in adaptive functioning initially manifested during the developmental period…[or before age 22].”
To determine whether or not an individual applying for social security benefits has impaired intellectual functioning severe enough to be disabling, standardized tests for measuring intelligence quotient (IQ) and/or evidence that the claimant is incapable of taking care of one’s own personal needs may be required to establish disability per the listing.

To win disability benefits per listing 12.06, an IQ test will likely be required. Standardized intelligence tests such as the Wechsler Adult Intelligence Scale are used to determine intelligence quotient. These tests should be administered and interpreted by a psychologist or psychiatrist who is qualified to evaluate the exam.
If an IQ test is not feasible given the claimant’s severely limited mental functioning, then the severely diminished level of functioning must be established through evidence that indicates claimant is unable to care for such personal needs as using the bathroom, dressing, and bathing. In this instance, medical reports and teacher evaluations describing an individual’s diminished intellectual, social and physical functioning will be helpful to establish the existence of a severe impairment.
When an IQ test is feasible, any claimant with an IQ of 59 or less will satisfy the listing and therefore be eligible for disability benefits. If the individual’s IQ is between 60 and 70, the claimant can satisfy the listing and win disability benefits by proving he or she has an additional mental or physical impairment that causes significant work-related limitations. If this is not the case, the claimant will have to establish “marked” difficulties in at least two of the following parameters:

a. Ability to perform activities of daily living
b. Ability to maintain social functioning
c. Ability to maintain concentration, persistence or pace.

If only one of the above is satisfied, the claimant can still satisfy the listing if he or she experiences extensive and repeated episodes of decompensation.

It is important to note that “marked” means “seriously limited, but not totally precluded.” Further, a “repeated episode” of decompensation lasting for “an extended period,” is generally four or more episodes within a year, each lasting two weeks or more.


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