The Social Security Administration (SSA) uses a medical guide, known as the Blue Book, to determine whether or not a condition is severe enough to warrant disability payments. The Blue Book is also often referred to as the Listing of Impairments.
Each condition in the Blue Book lists specific criteria and symptoms that you must have to be approved.
However, with thousands of variations of conditions, it is impossible to list them all in one place. Therefore, only the most common and severe impairments are listed in the Blue Book.