According to the Anthem Blue Cross Blue Shield Network Rapid Update dated 02-13-09, if claims are submitted electronically with legacy identification numbers — even if they also include the National Provider Identifier (NPI) <a href="https://www.harmonyhit.com/legacy-identifiers-no-longer-accepted-by-anthem-bcbs/#more-1095" class="more-link"><span aria-label="Continue reading Legacy Identifiers No Longer Accepted by Anthem BCBS">(more…)</span></a>