Code of Federal Regulations Title 20. Employees' Benefits § 20.222.35 Relationship as stepchild

(a) The claimant's natural or adoptive parent married the employee after the claimant's birth;  and

(b) The marriage between the employee and the claimant's parent is a valid marriage under applicable State law (see §§ 222.12 and 222.13), or would be valid except for a legal impediment;  and

(c) The employee and the claimant's parent were married at least one year before the date—

(d) The employee and the claimant's parent were married at least nine months before the date on which the employee died if the claimant is applying for a child's annuity;  or if the employee and the claimant's parent were married less than nine months, the employee was reasonably expected to live for nine months, and—