According to a notice from National Government Services, CEDI has discovered duplicate claim files were delivered to the DME MACs on Jan. 2. These were claims received after the last files were created for delivery on Dec. 31, 2008, through the holiday on Jan. 1, 2009, and Jan. 2, 2009.

"This caused a high number of duplicate file rejection on the DME MAC Front End Error Reports with edit 20268 to be returned to our CEDI trading partners," the notice said. "The second file created by CEDI will receive the front end rejection, 20268, for a duplicate file. Please review any errors on the first instance of the file on the DME MAC Front End Error Report for any rejections to be corrected and resubmitted."