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Wiki Modifier gh for diagnostic mammograms

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claudiak

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Hello Radiology Coders, and Happy Friday!

I have a question about the proper use of Modifier GH (diagnostic mammogram converted from screening mammogram the same day). Would it be coded as a diagnostic mammogram with the modifier GH appended, which sounds correct? Would we not need a new referring doctor's order for this since the original referral requests screening mammogram?
And if a corrected referral was not obtained, would we need to just code it as a 77057 for screening mammogram and not append any GH modifier??

Any and all help would be appreciated.
Thanks
Claudia K, CPC
Networker
 
If the order is for a screening mammogram - then a screening is done and billed. If images show a need for additional views, then we also bill a diagnostic with a modifier GG.
 
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