Blue Cross and Blue Shield of Illinois
BCBSAlso covers: BCBSIL, BCBS of Illinois
Payer ID
00621
621/00621 covers 837P and 837I via Availity; leading-zero padding varies by clearinghouse.
Timely Filing Limit (TFL)
Varies — confirm via portal / clearinghouse
Appeal Window
Provider claim review/appeal via Availity and BCBSIL channels; windows vary by product
Clearinghouse
Availity
Provider Services
800-972-8088
Claims Fax
Varies — confirm via portal / clearinghouse
Claims Address
BCBSIL, PO Box 660603, Dallas, TX 75266-0603 (commercial paper claims)
Provider Portal
https://www.bcbsil.com/provider
HCSC-operated Illinois Blue plan; claims routing differs by product.
Values vary by plan, region, and contract and can change. Confirm in the payer portal or with your clearinghouse before filing.
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