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Specific Drug Requirements

Certain covered drugs have special rules or limits, like step-therapy, prior authorization, and quantity limits, to keep you safe. Learn more about these and which drugs have them.


Step-therapy helps control your costs for some kinds of drugs. If we say a certain drug requires step-therapy, you have to try another drug in that category first. We call this a prerequisite medication.

In most cases, this drug should work for you. If it doesn’t, or if a doctor thinks it’s medically necessary to skip the prerequisite, they can request preauthorization.

Drugs that need step-therapy are marked in our formularies, or you can check this list:

Prior Authorization

Prior Authorization is approval of a drug or medical procedure before you get it. It's a review process to make sure that you meet certain requirements before we agree to cover it.

This is to help keep you safe and to control your costs.

Quantity Limits

This is a limit to how much of a drug we'll cover per prescription or over a certain period of time.

For example, if it’s considered safe to take only one pill per day of a certain drug, we may only cover that drug for one pill per day.

Quality Assurance Procedures

We have quality assurance policies in place to protect you. For details, check your plan's Evidence of Coverage in the chapters “Using the plan’s coverage for your medical service” and “Using the plan’s coverage for your Part D prescription drugs.”

Part B Versus Part D Drugs

Drugs that are identified as Part B versus Part D may be covered under Medicare Part B or D depending upon the situation. More info may need to be submitted describing the use and setting of the drug to determine what it should be covered under. You or your doctor will be contacted in this situation.

How do I request a coverage determination or medical exception for a drug?

You, your authorized representative, or your prescribing doctor can ask for a coverage determination.

Mail us a Coverage Determination Request Form to:

Health Alliance Medicare
3310 Fields South Drive
Champaign, IL 61822

Call us at (800) 851-3379, option 4, weekdays, 8 a.m. to 5 p.m.