For individuals entitled under NMISSS rules, additional NMISSS earnings for years
prior to 1987 are included under NMISSS rules. Earnings for 1987 or later can only
be included by recomputing the benefit using Title II rules. If this results in a
larger benefit, the beneficiary will have all future benefits computed under Title
II rules.
NOTE: A recomputation using Title II rules can only be caused by earnings for 1987 or later.
A recomputation cannot be made merely to switch to Title II rules.