I had always been told that when billing a non-vaccine injection with an OV that you didn't bill an injection fee (96372), that it was included in the OV. Recently one of our provider's took their child to a different clinic. They billed a 99213 (with a 25 modifier), Zofran and the injection fee 96372 and added a 59 modifier to it. There were 2 different diagnosis, diarrhea on the OV and vomiting on the Zofran and the injection fee. The provider was paid on all three charges. Now our provider wants us to bill the same way. lI've asked numerous individuals if this is correct billing and I've received mixed answers. I'm concerned that using the 2 modifiers is just trying to get around the scrubs. Can anyone assist me with this problem?