TaraChandra M. Narumanchi

a friend gave me a scanner that is only picking up the first 13 digit, without the extra 4. this works fine for comic books, but when i scan a trade paerback - comic base can't find it. I have another program for my book collection and it can identify the paperback from th 13 digit code. example actual scan9781302921583 full number 9781302921583 + 51799 Dawn of X TP. Any suggestions?