Definition - What does Blue Book mean?
The Blue Book refers to an impairment listing manual published officially as "Disability Evaluation Under Social Security" by the U.S. Social Security Administration (SSA). The Blue Book contains a list of impairments and information regarding how severe a claimant's medical condition must be in order for the person to be considered disabled by the SSA. Although the Blue Book is now updated electronically and is no longer published as a hard copy, it has retained the name it got as a result of the blue cover it used to bear.
Justipedia explains Blue Book
The SSA provides Social Security Disability benefits only to those individuals whose disability limits them from performing any kind of work. To make the determination process easier, the SSA publishes "Disability Evaluation Under Social Security" better known as the Blue Book. If a claimant's medical condition matches or is equivalent to the requirements outlined in the Blue Book, the claimant automatically qualifies for Social Security Disability benefits.