David,
Just a followup note. I checked with my office manager, and the extended visit with and annual visit is not being done currently, and she thought there may be a higher likelihood of rejections, but I do not have any experience with this combination to know for sure.
However, I double checked with my office manager and she cannot recall any rejections with medicare or privates when doing annual with 99212 or 99213 with a modifier, and I do not use the 99214 code much at all with an annual, but have not had any rejections when I did.
