Routing destination
Blue Cross and Blue Shield of Illinois
The first three characters on the member’s current ID card identify this BlueCard home plan. Use the terminal trading partner below for the published electronic routes.
Enhanced claim statusEDI 276/277, Availity ECS, or portal automation
Available
EligibilityEDI 270/271
Available
Appeals agentAI appeals workflow
Available
Member ID guidance
Read the prefix from the current card.
Do not infer a prefix from another member or an older card. Federal Employee Program IDs beginning with a single “R” follow a separate route.
LLLNNNNNNNNNMasked formats use L for a letter, N for a number, and ? for an unknown character. No member IDs are published.
Evidence
Source and verification
- Prefix, home plan, and state
- Substrate BlueCard mapping snapshot, last verified . Check the current prefix with BCBS ↗
- Terminal payer and payer ID
- Linked to the directory’s terminal payer record, last verified . Open the payer routing sources →
- Availability signals
- Substrate’s reviewed route configuration and claim-status network, last refreshed .
Use the member’s current ID card and confirm the current payer or clearinghouse route before submission. Prefix associations and transaction support can change.