Hide Code in Sales Quote

In sales quote, i want to add an item by code. But i don’t want to show the code in PDF.

I tried to hide the code column in theme, but it is in loop.
is there any possibility?
If not, i request to add the “Hide Code in document” option in sales quote

You may need to hire a local programmer with more experience with contingent actions in Liquid code. Most competent web developers should be able to help.