Ok, I have been trying to post this for the past several days but keep getting kicked out. I have noticed that the diagnosis codes populate while giving an immunization. A patient may come in for a flu shot and while adding this by using the decision support window the injection code and immunization populate onto the bill automatically. The problem is it pulls up any diagnosis in the patient's history and does not use the one put in during the visit. I make a chart for the patient receiving the flu vaccine so it is saved as part of the EHR. If they are there only for the flu shot then the diagnosis is v04.81. It does not matter if this is the only diagnosis code for the visit or whether I put in the code before or after the pt receives the injection the diagnosis code does not populate correctly on the bill. We have had to change each one as they are given.