Precertification
Some Part B drugs require prior approval before they can be administered. This is called precertification or prior authorization. This helps us review a drug to ensure it’s safe and appropriate for your patient.
Step therapy
Another one of these special requirements or coverage limits is known as step therapy. This is when we require a trial of a preferred drug to treat a medical condition before covering another nonpreferred drug.
Here’s an example:
If Drug A and Drug B both treat a medical condition, we may prefer Drug A and require a trial of it first. If Drug A does not work, we’ll then cover Drug B. The listed preferred products should be used first.
Note: The step therapy requirement does not apply to members who’ve already received treatment with the nonpreferred drug within the past 365 days.
Coverage criteria lookup
Find preferred drugs
We’ve compiled our preferred drug lists below for your convenience.
2026
Preferred drug list for Allina Health | Aetna Medicare Advantage-only plans (PDF)
Preferred drug list for Allina Health | Aetna Medicare Advantage with drug coverage plans (PDF)
Coverage criteria lookup
This tool helps you find Part B drugs with utilization management requirements. Select a drug to find its Healthcare Common Procedure Coding System (HCPCS) code, coverage criteria documents, step therapy documents and fax forms, if applicable.