In a certain code '59346' is written as '$AD%F' and '8173' is written as `HB#D'. How is '9865' written in that code?

AHF$

Respective codes have been assigned to the corresponding letters as follows:

5 = $, 9 = A, 3 = D, 4 = %, 6 = F

8 = H, 1 = B, 7 = #, 3 = D

So, according to the above codes, code for 9865 will be as follows:

AHF$