42 CFR § 406.10 - Individual age 65 or over who is entitled to social security or railroad retirement benefits, or who is eligible for social security benefits.
(2) A qualified railroad retirement beneficiary who has been certified as such to the Social Security Administration by the Railroad Retirement Board in accordance with section 7(d) of the Railroad Retirement Act of 1974; or
(b) Beginning and end of entitlement.
(2) Entitlement continues until the individual dies or no longer meets the requirements of paragraph (a) of this section. An individual is not entitled to railroad retirement benefits and is neither entitled to, nor eligible for, monthly social security benefits in the month in which he or she dies. However, an individual who meets all other requirements for hospital insurance entitlement is entitled to hospital insurance in the month in which he or she dies if he or she -
(i) Would have been entitled to monthly railroad retirement benefits or social security benefits in that month if he or she had not died; or