A health insurance card is an identity proof issued at the time of purchase or renewal of an insurance policy. You need the card to seek cashless hospitalisation or reimburse your health claims. The card contains all the relevant details of your health insurance policy like your name, date of birth, name of the insurance company, policy number, type of health insurance, sum insured, date of expiration, etc. Generally, a health insurance card is provided along with the policy document. However, if you have not received the card, you should contact the health insurance provider and request one immediately.