§404.363 When a stepchild is dependent.

If you are the insured's stepchild, as defined in §404.357, you are considered dependent upon him or her if you were either living with or receiving at least one-half of your support from him or her at one of these times—

(a) When you applied;

(b) When the insured died; or

(c) If the insured had a period of disability that lasted until his or her death or entitlement to disability or old-age benefits, at the beginning of the period of disability or at the time the insured became entitled to benefits.