News

Holiday Calendar

Contains the schedule of Highmark's corporate holidays. Although Highmark's offices and customer support areas will be closed on corporate holidays, trading partners will still be able to transmit and receive electronic transactions.

Latest News

Highmark Now Accepting 275 Claim Attachments via EDI - opens in a new tab (Posted - 1/23/2026)
Transitioning Electronic Claims Submission to Highmark's EDI by end of 2025 - opens in new tab (Posted - 4/23/2025)

Planned System Outages (Updated 01/06/2026)

Information on Highmark's scheduled system outages that may impact your electronic transactions.

Non-Routine Downtime

Check here for information regarding any non-routine downtime.

The following entities, which serve the noted regions, are independent licensees of the Blue Cross Blue Shield Association:

Western NY: Highmark Western and Northeastern New York Inc. d/b/a Highmark Blue Cross Blue Shield.

Northeastern NY: Highmark Western and Northeastern New York Inc. d/b/a Highmark Blue Shield.

All references to "Highmark" in this document are references to the Highmark company that is providing the member's health benefits or health benefit administration and/or to one or more of its affiliated Blue companies.