Pt comes into our office with a chief complaint. During the visit pt ask dr to discuss the result of his sleel study. Pt needs to a fitted for a cpap.

We billed an office visit 99213 and for CPAP 94660 with two different dx codes. However, INS is denying the office visit. Could anyone please help with this issue, or let me know where i could research ov and cpap being billed together?