billing for a G0439- subsequent MDC visit

They are deying it stating that the procedure/modifier combo is incorrect. It was billed with an regular office visit and another procedure that was done and a 25 modifer was on with the 99213 code. Can you help?

Thank you,
Beth

re: billing for a G0439- subsequent MDC visit

A patient is eligible for their subsequent AWV, G0439, one year after their initial visit.