Reminder about Using Unlisted Codes

In order for TriWest Healthcare Alliance Corp. (TriWest) to make an appropriate benefit determination and understand what is required for a requested service, all services with unlisted codes require prior authorization. In addition, they must be submitted with a description of the service(s). If a description is not included, TriWest will not process the referral and/or authorization, and return it to the provider. If the code is considered too vague, TriWest may send it back for additional information. For more information, please refer to the Prior Authorization List, which is posted on www.triwest.com/provider.