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Title 20

Displaying title 20, up to date as of 10/09/2026. Title 20 was last amended 9/30/2026.
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Definition of Disability

§ 416.905 Basic definition of disability for adults.

(a) The law defines disability as the inability to do any substantial gainful activity by reason of any medically determinable physical or mental impairment which can be expected to result in death or which has lasted or can be expected to last for a continuous period of not less than 12 months. To meet this definition, you must have a severe impairment(s) that makes you unable to do your past relevant work (see § 416.960(b)) or any other substantial gainful work that exists in the national economy. If your severe impairment(s) does not meet or medically equal a listing in appendix 1 to subpart P of part 404 of this chapter, we will assess your residual functional capacity as provided in §§ 416.920(e) and 416.945. (See § 416.920(g)(2) and 416.962 for an exception to this rule.) We will use this residual functional capacity assessment to determine if you can do your past relevant work. If we find that you cannot do your past relevant work, we will use the same residual functional capacity assessment and your vocational factors of age, education, and work experience to determine if you can do other work. (See § 416.920(h) for an exception to this rule.)

(b) There are different rules for determining disability for individuals who are statutorily blind. We discuss these in §§ 416.981 through 416.985.

[45 FR 55621, Aug. 20, 1980, as amended at 56 FR 5553, Feb. 11, 1991; 68 FR 51164, Aug. 26, 2003; 77 FR 43495, July 25, 2012]

§ 416.906 Basic definition of disability for children.

If you are under age 18, we will consider you disabled if you have a medically determinable physical or mental impairment or combination of impairments that causes marked and severe functional limitations, and that can be expected to cause death or that has lasted or can be expected to last for a continuous period of not less than 12 months. Notwithstanding the preceding sentence, if you file a new application for benefits and you are engaging in substantial gainful activity, we will not consider you disabled. We discuss our rules for determining disability in children who file new applications in §§ 416.924 through 416.924b and §§ 416.925 through 416.926a.

[62 FR 6421, Feb. 11, 1997, as amended at 65 FR 54777, Sept. 11, 2000]

§ 416.907 Disability under a State plan.

You will also be considered disabled for payment of supplemental security income benefits if—

(a) You were found to be permanently and totally disabled as defined under a State plan approved under title XIV or XVI of the Social Security Act, as in effect for October 1972;

(b) You received aid under the State plan because of your disability for the month of December 1973 and for at least one month before July 1973; and

(c) You continue to be disabled as defined under the State plan.

§ 416.908 [Reserved]

§ 416.909 How long the impairment must last.

Unless your impairment is expected to result in death, it must have lasted or must be expected to last for a continuous period of at least 12 months. We call this the duration requirement.

§ 416.910 Meaning of substantial gainful activity.

Substantial gainful activity means work that—

(a) Involves doing significant and productive physical or mental duties; and

(b) Is done (or intended) for pay or profit.

(See § 416.972 for further details about what we mean by substantial gainful activity.)

§ 416.911 Definition of disabling impairment.

(a) If you are an adult:

(1) A disabling impairment is an impairment (or combination of impairments) which, of itself, is so severe that it meets or equals a set of criteria in the Listing of Impairments in appendix 1 of subpart P of part 404 of this chapter or which, when considered with your age, education and work experience, would result in a finding that you are disabled under § 416.994, unless the disability redetermination rules in § 416.987(b) apply to you.

(2) If the disability redetermination rules in § 416.987 apply to you, a disabling impairment is an impairment or combination of impairments that meets the requirements in §§ 416.920 (c) through (f).

(b) If you are a child, a disabling impairment is an impairment (or combination of impairments) that causes marked and severe functional limitations. This means that the impairment or combination of impairments:

(1) Must meet, medically equal, or functionally equal the listings, or

(2) Would result in a finding that you are disabled under § 416.994a.

(c) In determining whether you have a disabling impairment, earnings are not considered.

[62 FR 6421, Feb. 11, 1997, as amended at 65 FR 54777, Sept. 11, 2000]