20 CFR 404.363 : Employees' Benefits (§ 1.1 To Parts 1011-1099) — (Part 400 To Part 499) — Social Security Administration (Part 400 To Part 499) — Federal Old-Age, Survivors And Disability Insurance (1950- ) (§ 404.1 To § 404.2127) — Old-Age, Disability, Dependents' And Survivors' Insurance Benefits; Period Of Disability (§ 404.301 To § 404.392) — Child'S Benefits (§ 404.350 To § 404.368) — When is a stepchild dependent?

If you are the insured's stepchild, as defined in § 404.357, we consider you dependent on him or her if you were 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.