What is the difference between a social security card and a medical blue book? If I lose my social security card, can I use my medical blue book?

The difference between the two is that the social security card can do "real-time settlement" is also commonly known as on-the-spot reimbursement, which avoids a large number of documents backlog of insured people take up a lot of money, the social security card is to replace the medical blue book and appeared in the social security card after the opening of your blue book on the retirement, and must be used in the future to use the social security card to get medical treatment, and if the social security card is lost, you need to lose the card immediately. If you lose your social security card, you need to register it immediately, and during the replacement period, you will be issued a "card certificate", and use it to go to the doctor, and after the replacement of the social security card down the road, you need to use the "card certificate" to reimburse the medical expenses incurred by the hand.