I was the passenger in a car accident that the driver of the car that I was in was at fault. He only had a max liability clause of $15k, I had back su

You can, and you can also try to use your own car insurance, or the insurance of anyone in your house that was an insured driver.  There is something called UM/UIM for uninsured motorist/under insured motorist.  you  may have this coverage, and it may help you with your medical bills.  Also, your health insurance will pay for medical bills and try to get reimbursement from the the car insurance.