CPYTOIMPF and numerics > 15 Digits

I search the archive and could not find an answer.  Here is the situation:
When trying to do a CPYTOIMPF to create a .CSV file, we have an alpha field
that is 16 long and most times contains all numbers.  This field gets
converted as a numeric, which is o.k. but the last digit is always replaced
by a zero.  

Is there a limitation on the size of numeric values or am I missing some
option on the command prompt?
Here is the command with parms that we are using:

CPYTOIMPF FROMFILE(TPPVALUEGC)         
          TOSTMF('/juice/test.csv')    
          RCDDLM(*CRLF)                

TIA