Kelly,

Either way is an acceptable method for obtaining Doppler waveforms.
  
However, in case there is a question about the reimbursement portion of 
this procedure in our audience, obtaining isolated waveforms using a duplex 
ultrasound machine during the course of a physiologic exam does not 
constitute performance of an Extremity Duplex Arterial Exam.  So the 93922, 
93923 and 93924 codes are still applicable, not 93925 or 93926.

Gene Doverspike, RVT

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