CHILD IMPAIRMENTS

Under title XVI, a child under age 18 will be considered disabled if he or she has 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. 

The Listing of Impairments describes, for each major body system, impairments considered severe enough to prevent an individual from doing any gainful activity (or in the case of children under age 18 applying for SSI, severe enough to cause marked and severe functional limitations). Most of the listed impairments are permanent or expected to result in death, or the listing includes a specific statement of duration.