Really the best person to ask is your attending physician, so you will know the details that need to be included in the note according to their standards.
Depends on specialty, context, other circumstances, etc. I mean, if you write "We saw the patient together and discussed plan with patient" as your entire note, that might be billable, but probably not at a level your attending would appreciate.
Very generally speaking, the specific things they teach you to ask about/document in your notes in med school are because they are components of billable notes.