Do you suspect fraud? We encourage you to let us know. Remember, you can remain anonymous! Please include as many details as possible. You can reach us several ways: BlueCross BlueShield Fraud Hotline: 800-763-0703 Fax: 803-264-4050 Write us at: BlueCross BlueShield Anti-Fraud Unit Mail Code AX-E01 P.O. Box 24011 Columbia, SC 29224-4011 Or, send us an e-mail. Find out more about how you can help us stop fraud. Check out our Fraud Case Files.