EDI Companion Guides

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.