Inside the USA
When you are inside the USA, you are strongly encouraged to visit a provider that is part of one of the following networks:

Outside the USA
When you need to seek treatment outside of the USA, you can take advantage of the international provider network through Europ Assist. You can view the current network through the "International Network Provider Listings". Before you seek treatment it is VERY IMPORTANT that you call HCC prior to seeking any treatment. They will be able to find a provider close to you, and will call ahead to make sure the provider is setup and they will accept direct billing.
If you do not call ahead or seek treatment on your own, there is no problem in doing this, however you will need to pay for your medical expenses up front and then submit a claim form for reimbursement.

