DentalMedicalVision
Blue Cross and Blue Shield of Illinois Payer ID
Payer IDG00621
Payer details
- Payer ID
- G00621
- Other payer IDs
- 00621, 1405, 5508, 10033, BCBSIL, BCMIW, CB621, ILBCBS, ILBLS, SB621
- Parent organization
- Health Care Service Corporation
- Coverage types
- Dental, Medical, Vision
- Programs
- Commercial, Medicare, Medicaid
- Payer website
- bcbsil.com
Other names
- BCBSIL
- Blue Cross and Blue Shield of Illinois - Medicare Advantage
- Blue Cross Blue Shield Illinois
- Blue Cross Blue Shield of Illinois
- BlueCross BlueShield of Illinois
- HCSC
- Health Care Service Corporation
Where it operates
Arizona, Florida, Illinois, Indiana, Nevada, Oklahoma
What You Can Check With Blue Cross and Blue Shield of Illinois
- Eligibility and benefits for any service type Blue Cross and Blue Shield of Illinois returns
- Instant results, 24/7, with no phone calls or portals
- Claim status after you bill
What a check returns is up to the payer: some return more detail than others.
Service Type Code LookupPayer details updated Oct 18, 2026. Payers change IDs and plan names; when in doubt, use the ID on the member's card.
Browse payers A to Z
Verify Coverage in Seconds
Check eligibility and benefits for any service type, track claim status and catch coverage changes across your census, with coverage across 1,800+ payers.