Talk to your employer or insurance broker, or call the plan.
What is the monthly premium? (The amount that you or your employer pays each month.)
What is the yearly deductible? (The amount you have to pay each year before the plan starts to pay.)
Is there a separate deductible for different kinds of services? (For example one deductible amount for prescriptions and a different deductible amount for other medical services).
What costs (e.g. co-pays or co-insurance) or services (e.g. hospital, surgery) apply towards the deductible?
What is the yearly out-of-pocket-maximum?
This is the total you have to pay each year for most of your covered services. It does not include your premiums. Each family member has a yearly out-of-pocket maximum, and there may be a family out-of-pocket-maximum also. When an individual or family reaches the maximum, they do not have to pay most out-of-pocket costs for the rest of the year.
Ask what costs (e.g. co-pays, co-insurance, deductibles) apply towards the yearly out-of-pocket maximum.
You see a specialist without a referral from your primary care doctor and prior approval from your medical group or health plan.
You see a provider who is not in your health plan's network, unless it is an emergency or you have a referral and prior approval. The network is all the doctors, hospitals, and other providers who have contracts with your plan to provide care to plan members
You go to an emergency room for non-emergency care.
You fill a prescription for a drug that is not on your health plan's list of approved drugs or you fill your prescription at a pharmacy outside your plan’s network.
You get services that are not part of your benefit package.
How can I find out how much a service will cost if I have a high deductible?
Ask your doctor, hospital, or other provider for the procedure code for the service you need. Then, call your health plan and ask the cost for this service. Some plans with high deductibles post the costs of common services on their websites.
This break down of insurance factors was found on the CA.gov website.