REF*P4 segment isn't on them for the Demonstration Project 
Identifier.  Because of that, when the claims go to the payer, the 
payer's system is immediately rejecting the claims for missing info.

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• 
  I received the following resolution back from the payer:
  "The Provider has to send a correct demonstration code when submitting the claim.
  Clm| The Demonstration Project Identifier (Loop 2300, REF) is required where a demonstration project is being billed or reported."
  
  Please add a correct demonstration code to the claim and resubmit this claim.
  
  Thank you!