The Old-Age and Survivors Insurance (OASI) program provides benefits to retired workers and their dependent family members and to survivors of deceased workers. The Disability Insurance (DI) program provides benefits to disabled workers, their spouses, and children (whether or not disabled).
Benefits are paid from the OASI and DI Trust Funds. However, not all disabled beneficiaries are paid from the DI Trust Fund. All disabled widow(er)s' and most disabled adult children's benefits are paid from the OASI Trust Fund. Persons receiving disability benefits from either trust fund are referred to in this report as Social Security beneficiaries.
Data for 2001 and subsequent years presented in these tables may differ slightly from other published statistics for two reasons. First, all data for those years are based on 100 percent data files. Second, beginning in 2001, the definition of an award was changed to include secondary benefit awards, subsequent periods of disability, and conversions from one class of child's benefit to another and to exclude reinstated benefits. Those changes resulted in a slight increase in the award counts.
Beginning with the 2020 edition, some of the mental disorder diagnostic groups were renamed:
||Autism spectrum disorders
|Childhood and adolescent disorders not elsewhere classified
||Depressive, bipolar, and related disorders
|Organic mental disorders
|Schizophrenic and other psychotic disorders
||Schizophrenia spectrum and other psychotic disorders
|Other mental disorders
Also beginning with the 2020 edition, attention deficit/hyperactivity disorder (ADHD) diagnoses were reallocated from the “childhood and adolescent disorders not elsewhere classified” group to the “other mental disorders” group to reflect the agency's adoption of an ADHD diagnostic code for both children and adults.
All years are calendar years unless otherwise specified.
Numbers in the text, charts, and tables may not add to totals because of rounding.