On the Accounts tab, in the second line (where you added your fake CPT code) select inside the ICD-9 code box and see if you have the others to choose from. You can also search for more from there. Basically you would end up with diagnosis codes that are different on the CPT that is real and the one that is fake. That doesn't make it look like they are all for the same procedure, it makes it look like you put separate ICD-9s for each procedure. On the invoice it will look fine, and I have tried it with 8 codes (4 different ones for a 99213 and 4 different ones for a 001). If you try to print a HCFA/CMS1500 it will only let you use 4 though. If you can't get it to work I can post screenshots tomorrow or something.
