The fifth edition of the bible of psychiatry, the Diagnostic and Statistical Manual of Mental Disorders (DSM-V), is due out in May 2013. It may have a significant impact upon Social Security's disability determination. It is anticipated that there will be particularly significant changes in diagnosis for children.
Autism spectrum disorders such as Asperger's syndrome have been a particular concern. There is now a new study showing that 91% of those currently diagnosed with an autism spectrum disorder will still qualify for this diagnosis under DSM-V.
Of greater concern are those diagnosed with childhood bipolar disorder. I have not seen any studies on how DSM-V will affect diagnosis for these children.