Our Electronic Data Interchange (EDI) Companion Guides describe specific requirements for trading partners who exchange electronic transactions directly with Blue Shield of California or Blue Shield of California Promise Health Plan. Our companion guides contain only supplementary instructions to the ASC X12 national implementation guides and do not replace or modify the implementation guides.

Follow the instructions found in these companion guides to ensure effective and efficient processing of your transactions.

For Blue Shield of California Promise Health Plan providers

Find specific requirements for trading partners who exchange electronic transactions directly with Blue Shield of California Promise Health Plan (not through a vendor or clearinghouse).

View EDI Companion Guides

For Blue Shield of California providers

You can find and download the companion guides for the appropriate transactions in the list below.

HIPAA transaction type
Companion guide (5010 version)
837 Electronic Claim Submission
837 Guide for 5010 (PDF 366 KB)
835 Electronic Remittance Advice
835 Guide (PDF 882 KB)
270/271 Eligibility & Benefits Inquiry/Response
270/271 Guide (PDF 521 KB)
276/277 Claim Status Inquiry/Response
276/277 Guide (PDF 326 KB)
277CA Claim Status Information - Secondary
N/A
278 Authorization
278 Guide (PDF 327 KB)