Invalid Data Billed on Clinical Trial Claims to Deny Unprocessable

Effective June 17, 2019, claims submitted with invalid data in loop 2300 REF02 or box 19 of the 1500 form deny unprocessable. For more information on how to correctly submit clinical trial information please see the Clinical Trials webpage.

To correct a claim denied for clinical trial, review the Reopenings webpage for more information.

Last Updated May 15, 2019