My confusion is do you enter a CPT code when you finish a visit - I put mine on a superbill as I leave room. If you know the CPT code you are going to use it really is no big deal to enter it - you don't have to click the boxes for each shot, EKG, PFT, etc - since you are not using it for PM. Just put the office code and hit save.
Now if you do not use ICD-9 codes and have never got into looking them up it could be a bit more work but you just have to get into the habit - it will also fulfill the criteria for a problem list as you need ICD 9 codes for the summary sheet to have diagnoses, etc.