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Illinois

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Blue Cross and Blue Shield of Illinois

General Inquiries

1-312-653-6000
Blue Cross and Blue Shield of Illinois
300 E. Randolph Street
Chicago, IL 60601-5099

FEP Service
4002 Loop 322
Abilene, TX 79602
www.bcbsil.com

Claims/Customer Service

Blue Cross and Blue Shield of Illinois
P.O. Box 660603
Dallas, TX 75266-0603

Customer Service

1-800-972-8382

Precertification

1-800-227-6591

Mental Health/Substance Use Disorder Precertification

1-800-779-4602

Case Management 

1-800-462-3275

Disease/Care Management Programs

Asthma
Chronic Obstructive Pulmonary Disease
Congestive Heart Failure
Coronary Artery Disease
Diabetes
1-866-412-8795

If you are deaf, hard of hearing, or have a speech disability, dial 711 for TTY relay services. For other language assistance or translation services, please call the customer service number for your local Blue Cross and Blue Shield company.

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