# Blue Cross and Blue Shield of Illinois Payer ID

- **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
- **Where it operates:** Arizona, Florida, Illinois, Indiana, Nevada, Oklahoma
- **Payer website:** https://www.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

## 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.

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Payer details updated Oct 18, 2026. Payers change IDs and plan names; when in doubt, use the ID on the member's card.

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Canonical: https://www.verifytx.com/payers/blue-cross-and-blue-shield-of-illinois/