124 - Entity's name, address, phone and id number. Usage: This code requires use of an Entity Code.

Usually, with this rejection message, the payer is supposed to send additional information indicating who the 'Entity' is.  Unfortunately, sometimes they do not.

The various types of 'Entities' that can be on a claim are listed below.  You may want to browse through their information to see if you can find anything that stands out as being wrong.  If you cannot find anything, you may need to call the payer to get additional information (remember to let them know that you sent the claim electronically and it was EDI rejected).

• Billing Provider
• Rendering Provider (address, phone, do not go on claim, however, they may be referencing the NPI).
• Patient
• Insured
• Referring Physician