Yes, I have seen a $10,000 winner on Bingo and it definitely had a code. However; the code
was one that you would see on a losing ticket. It did not coincide with the amount like
the smaller prizes do (i.e. $10 has T E N, $5 has F I V, etc.). The code was one that didn't have
an apparent meaning, it was something like M L K, something like that.
I also saw $1000 winner on Lucky Time Two that had P L X and you know that is a code on a
lot of losing tickets. That is why I laugh when I see people buying cards and just scratching
the codes. They could easily be throwing away big winners, because the big winners don't
spell out the amount you won. However; there are exceptions, because I just remembered
seeing a winning WIN FOR LIFE card and the code was indeed L I F. (Unfortunately, I wasn't
the $1000 a/week winner for life).
But, as a rule, always check your cards out, don't go by the codes, because hey, you never know!