Social Security pays disability under two programs:
- Social Security Disability Insurance (SSDI) for workers and certain family members (auxilaries) who have paid into the Social Security trust fund, and
- Supplemental Security Income (SSI) for individuals with limited income and resources. SSI is funded by the general funds.
For most applicants, the medical requirements are the same under both programs and disability is determined by the same process.
SSA Benefits Online 