I was wondering if I could get some help…

We have a patient who was discharged from the hospital and we billed for a 99239. He immediately presented to the clinic for some additional stress/echo testing-93351/TC, 93320/TC, 93325/TC. We are receiving denials on the stress/echo services indicating they were incidental to 99239. Is this truly the case and the adjustment is ours or is there an appropriate modifier I can use to support these services? I guess I'm wondering if a 59 modifier would be appropriate to use in this case? I should also mention that we have attempted with a 25 modifier on 99239 without success.

Any information would be greatly appreciated!