How to Request Prior Authorization

There are three ways to contact AIM:
  1. Through a direct link on the Blue Cross Provider Central website at
    Log in and go to eTools and then to AIM Specialty Health. Click the Go Now button.
    (Available to Blue Cross Blue Shield of Massachusetts participating providers.)
  2. Go directly to the AIM ProviderPortalSM (registration is required) at
    Note: If you’ve already registered for the AIM ProviderPortal for Blue Cross Blue Shield of Massachusetts or another insurer, you won’t need to register again.
  3. Call the AIM Contact Center (Monday – Friday, 8 a.m. – 6 p.m., ET) at 1-866-745-1783.
Tips for Entering a Prior Authorization Request

Get to know the prior authorization process
Our interactive step-by-step tutorial shows you exactly how to do it.

Prepare to enter a prior authorization request
Knowing what information you’ll need for each order saves time. Our Cancer treatment order request worksheet can help you identify and collect the information you need to have available when entering an order request. We recommend that you print a copy and keep it handy when you’re preparing to submit a cancer treatment order. Also check out our Quick Guide to Order Entry

Align with Pathways
Our Pathways worksheets can help you align with identified Pathways. Download worksheets for these cancer types.


The AIM ProviderPortal is your access point for submitting prior authorization requests online.

Learn more