What are the obstacles RN's face when trying to document charges for a patient?

I am currently studying the process of charge capture in a hospital and need some RN perspective. We currently have paper fee tickets across our system and it is difficult for the RN's to remember all they do for a patient and to write it down accurately so their functions can be appropriately billed. I get that the RN focus is on patient care and not paperwork. Before our switch to a new EMR is complete, what can I do to make it easier for RN's to list their charges? We already have a multi-day fee ticket that resides on the chart itself. Should someone else pull the charges from the medical record? Would it be easier to scan barcodes at the chart pulldown outside each room? Any feedback would be great! Thanks again, you all add a much needed view to my engineering world.