CFR /  Title 20  /  Part 404  /  Sec. 404.735 Evidence you are the grandchild or stepgrandchild.

If you are the grandchild or stepgrandchild of the insured person, we will ask you for the kind of evidence described in Secs. 404.731 through 404.733 that shows your relationship to your parent and your parent's relationship to the insured.