No. I don't understand.

Are you making the circuit board that is sending the IR code and the circuit board receiving it? If not, you cannot make a discrete code.

Your device either understands discrete codes or it doesn't. Or your device may not even have discrete codes available.

What code are you looking for?
What are you trying to accomplish / get your device to do?
What is the brand / model number of your device?

It's possible using the collective wisdom and knowledge of this forum that someone already has the code you need.