222.31—Relationship as child for annuity and lump-sum payment purposes.
(a) Annuity claimant.
When there are claimants under paragraph (a)(1), (a)(2), or (a)(3) of § 222.30, a person will be considered the child of the employee when that person is—
(b) Lump-sum payment claimant.
A claimant for a lump-sum payment must be one of the following in order to be considered the child of the employee:
(2)
A child legally adopted by the employee (this does not include any child adopted by the employee's widow or widower after the employee's death); or
(3)
The equitably adopted child of the employee. For procedures on how a determination of the person's relationship to the employee is made, see §§ 222.32-222.33.