what is the alpha prefix for capital blue cross
Alpha Prefix Importance. Most members with coverage through a Blue Cross Blue Shield Plan are assigned a three letter alpha prefix as a part of their unique identification number.The alpha prefix can easily be identified as it is the first three characters.The alpha prefix is very important to the identification number.refixes are also used to identify and correctly route claims to the appropriate Blue Cross Blue Shield Plan for processing. There are two types of alpha prefixes: plan-specific and account-specific. Plan-Specific alpha prefixes are assigned to each plan.