How can we help?

Your Horizon plan requires you to receive prior authorization or a referral for certain services or treatments. Take a look at the Explanation of Benefits (EOB) statement. If it includes the Message Code M737 that means your claim has been denied because there was no prior authorization or referral on file for this visit.

If you used an in-network doctor, other health care professional or facility, the provider should have submitted the request for prior authorization or given you a referral.