All payments are federally administered payments.
All years are calendar years unless otherwise specified.
Numbers in the text and tables may not add to totals because of rounding.
Monthly data shown in tables are for the end of the given month.
In accordance with Public Law 111-256 (enacted October 2010), the terms "retardation" and "mental retardation" have been replaced by "intellectual disability." This change in terminology does not affect the data presented, which are directly comparable with the data published in previous editions under the old terminology.
Beginning with this 2010 edition, tables showing data by diagnostic group provide detail for mental disorders in these categories: autistic disorders, developmental disorders, childhood and adolescent disorders not elsewhere classified, intellectual disability, mood disorders, organic mental disorders, schizophrenic and other psychotic disorders, and all other mental disorders. In a few instances, a table showing data by diagnostic group has been split into two companion tables to accommodate the additional detail.