Does Social Security that has been retroactively paid include Medicare?

Social security includes Medicare. Social security includes old age insurance, health insurance, maternity insurance, unemployment insurance, and business insurance. Maternity insurance, unemployment insurance, and industrial and commercial insurance.

Social security, all known as social insurance, is a redistributive system, its goal is to ensure the reproduction of material and labor and social stability. We usually talk about social security, there is another name, that is, five insurance and one gold.