5 CFR §844.403

1. (a)When a disability annuity is terminated because of recovery or restoration of earning capacity and the individual is not employed in the Government, the individual is entitled to an annuity:
   1. (1)Under 5 U.S.C. 8414(b) if the individual:
      1. (i)Is at least age 50 when the disability annuity ceases and had 20 or more years of service at the time of retiring for disability; or
      2. (ii)Has 25 or more years of service at the time of retiring for disability, regardless of age; or
   2. (2)Under 5 U.S.C. 8412(g) if the individual is at least the minimum retirement age applicable under 5 U.S.C. 8412(h) when the disability annuity ceases and had 10 or more years of service at the time of retiring for disability.
2. (b)When a disability annuitant whose annuity was terminated because of Federal reemployment is separated and meets the age and service requirements for immediate retirement under 5 U.S.C. 8412 or 8414, the individual is entitled to an annuity computed under 5 U.S.C. 8415.