It is necessary to keep your health insurance card in your wallet so that Hospital authorities do not wait for your relatives to deposit the money for starting the treatment in emergency accident treatments. The Insurance health card is not a credit card and it does not have any magnetic strip. It just carries your Health Insurance policy information.
It is wise to write more information on the back of the card as below (Your blood group, mobile numbers of whom to call in case of emergency, medicines you are allergic to, any existing ailments like diabetes, hypertension, thyroid). It will act as a blessing in any unfortunate accident events.