Blue Cross and Blue Shield of Illinois
Part of Health Care Service Corporation
Summary
Blue Cross and Blue Shield of Illinois is a regional health plan, part of Health Care Service Corporation, offering dental, medical, and vision coverage operating in 5 states. Claims route under payer ID G00621, with 10 alternate IDs in use across clearinghouses. Provider enrollment typically takes 60-90 days, with applications through HCSC Provider Portal / Availity, and CAQH is used for credentialing data. Through clearinghouses it supports eligibility checks, claim status inquiries, professional claims, institutional claims, dental claims, and electronic remittance (ERA); ERA enrollment is required and takes several weeks.
At a glance
- Payer ID
G00621Also seen as 00621, 10033, 1405, 5508, BCBSIL, BCMIW and 4 more- Also known as
- BCBSIL, Blue Cross Blue Shield Illinois, Blue Cross Blue Shield of Illinois, Blue Cross and Blue Shield of Illinois - Medicare Advantage, BlueCross BlueShield of Illinois
- Uses CAQH
- YesApplication route: CAQH application only
- Service area
- IL, MT, NM, OK, TX
Clearinghouse transaction setup
Which EDI transactions this payer supports, and how long clearinghouse enrollment typically takes when it is required.
| Transaction | Enrollment | Typical setup |
|---|---|---|
| Eligibility checks (270/271) | Not required | Immediate |
| Claim status (276/277) | Not required | Immediate |
| Professional claims (837P) | Not required | Immediate |
| Institutional claims (837I) | Not required | Immediate |
| Dental claims (837D) | Not required | Immediate |
| ERA / remittance (835) | Required | Several weeks |
Common questions
- What is the payer ID for Blue Cross and Blue Shield of Illinois?
- The payer ID for Blue Cross and Blue Shield of Illinois is G00621. Alternate IDs seen across clearinghouses include 00621, 10033, 1405, 5508.
- How long does Blue Cross and Blue Shield of Illinois provider enrollment take?
- Blue Cross and Blue Shield of Illinois provider enrollment typically takes 60-90 days from application to effective date. Timelines vary by state, plan, and how complete the application is.
- Does Blue Cross and Blue Shield of Illinois require CAQH?
- Yes. Blue Cross and Blue Shield of Illinois uses CAQH for credentialing data, so keep the provider's CAQH profile current and attested before applying.
- Does Blue Cross and Blue Shield of Illinois require ERA enrollment?
- Yes. Blue Cross and Blue Shield of Illinois requires a separate ERA (835) enrollment before electronic remittances flow, and setup typically takes several weeks.
- What states does Blue Cross and Blue Shield of Illinois cover?
- Blue Cross and Blue Shield of Illinois operates in IL, MT, NM, OK, TX. Coverage can differ by plan and product line, so confirm the specific plan before you file.
Related payers
Compiled from public payer resources and clearinghouse catalogs. Details change often, so confirm with the payer before relying on them. Spot something out of date? Tell us and we will fix it.