Does social security have critical illness insurance?

Serious illness insurance is not included in social security, but medical insurance in social security includes serious illness insurance, and serious illness can be compensated. However, serious illness and serious illness are completely two concepts, and the insurance attributes, insurance objects and insurance contents are completely different. Critical illness insurance means that the insured will get compensation after suffering from a serious illness with high cost. However, in the critical illness insurance, as long as he suffers from the critical illness stipulated in the insurance contract and meets the claim conditions, the insurance company will pay the insurance premium in a fixed amount.