Social security-fully insured
To be fully insured, you need at least one qualifying quarter for each calendar year after you turned 21 and the earliest of the following: the year before you attain age 62, the year before you die, or
the year before you become disabled.
The minimum number of QCs needed is 6. The maximum number needed is 40. Any year (all or part of a year) that was included in a period of disability is not included in determining the number of QCs you need—Read more at SSA.gov. “Insured Status Requirements.”