BCBS Texas: Fax Numbers by Plan and Request

What is BCBS Texas's fax number for predetermination?

BCBS Texas's own Predetermination Request Form confirms a fax of 888-579-7935 for general use, and 888-368-3406 specifically for Federal Employee Program members. The predetermination form is not for claims payment, appeals or standard prior authorization. That restriction applies to this form and route. BCBS Texas separately publishes Medicaid prior authorization fax routes.

Where to fax

• Predetermination request (Provider, General): fax 888-579-7935. Source: BCBS Texas Predetermination Form.
• Predetermination request (Provider, Federal Employee Program): fax 888-368-3406. Source: BCBS Texas Predetermination Form.
• Medicaid prior authorization intake, STAR and CHIP (provider): fax 1-855-653-8129.
• Medicaid prior authorization intake, STAR Kids (provider): fax 1-866-644-5456. Source for both Medicaid routes: BCBS Texas Utilization Management. Follow its separate instructions for behavioral health and pharmacy requests.

^{Fax number(s) verified September 17, 2026.}

Which route should I use?

1. Use this fax only for a genuine predetermination, an advance check on coverage before a service happens, not for an already-provided service.
2. Confirm whether the member has Federal Employee Program coverage, which uses a separate fax number.
3. For prior authorization, use the instructions for the member's plan and service. The Medicaid numbers above do not apply to other plans. Claims and appeals also have separate instructions.

Documents to include

Use BCBS Texas's own Predetermination Request Form, it specifies the exact clinical and coding information the reviewer needs.

Several other health and life insurers follow a similar pattern. Our directory also covers EyeMed's fax numbers, how to fax GEHA, the Guardian fax page, Health Net's claims fax, sending a fax to Meritain Health, and Transamerica's fax number, each with its own destination and audience notes.