input.getkey keycode scrollwheel - Is this even possible?

I know Unity has a built-in input manager but I have made my own custom input manager so users can change their buttons during run time while playing.

I've got everything set up including shift to work but I kinda forgot about the scroll wheel. Did a bit of looking around but no answers are given directly about does scroll wheel have a keycode?

I know you can use delta to find if scroll wheel is being used but in a sense how would I convert that to a keycode to be saved and shown back to the player?

Any light on this situation will be amazing. Thanks