20 CFR § 416.907
Disability under a State plan
February 18, 2021
You will also be considered disabled for payment of supplemental security income benefits if—
(a) You were found to be permanently and totally disabled as defined under a State plan approved under title XIV or XVI of the Social Security Act, as in effect for October 1972;
(b) You received aid under the State plan because of your disability for the month of December 1973 and for at least one month before July 1973; and
(c) You continue to be disabled as defined under the State plan.