denial reson B20 by Medicare

Hi:

I do billing for PCPs and observed that Medicare denies some claims for the denial reason B20, they say, the claim is paid to another provider for the same DOS. So the claim we sent is considered as a duplicate.

Will we get paid, if we resubmit these claims with a modifier, if yes, what would the modifier be.

Otherwise, what can you suggest on this problem.

Thanks,
Malini

It could be

that you are using the same diagnosis as another doc on the case. So if you and the pulmonary doc both bill pneumonia, only one can get paid. So you cold rebill with another diagnosis and you should ask your docs to be sure not to use the diagnosis if a specialist is treating for that problem