Illinois

Blue Cross and Blue Shield of Illinois
General Inquiries
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
Claims/Customer Service
Blue Cross and Blue Shield of Illinois
P.O. Box 805107
Chicago, IL 60680-3625

FEP Customer Service
800-972-8382

Precertification
800-227-6591

Mental Health/Substance Abuse
800-779-4602

Case Management
800-462-3275

Disease Management
866-412-8795

Care Management Programs
Asthma
Chronic Obstructive Pulmonary
Congestive Heart Failure
Coronary Artery Disease
Diabetes
866-670-6681

Additional Information