Yes there is.
Character Modifier Code:
94000130 feff0000
[color="Red"]b2101d40[/color] 00000000
da000000 00111d10
d7000000 0002388c
d2000000 00000000
Whenever you want to convert a USA code to a Japanese code, change the:
b2101d40
into:
b2101140
If you want to change it from Japanese to USA, then vice versa.