Online
Complete a fraud report.
Phone
1-800-543-0867 (Hotline for Blue Cross and Blue Shield of Illinois)
1-800-337-8440 (Hotline for Federal Employee Program)
1-877-327-2583 (Hotline for Blue Cross and Blue Shield Association)
These toll-free Fraud Hotlines are available 24/7. You can remain anonymous or let us know if you want to be contacted.
Mail
Blue Cross and Blue Shield of Illinois
Special Investigations Department
300 E. Randolph Street, 35th Floor
Chicago, Illinois 60601
