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Thread: CT Angiography vs. CT

  1. #1
    Join Date
    Apr 2007
    Flower City Coders

    Question CT Angiography vs. CT

    AAPC: Back to School
    How can I identify a CT angiography of the Abd w/wo dye (74175) from an Abd CT w/wo dye (74170). Is there any difference in the technique or is it just the slice thickness and number of images?

  2. #2
    Join Date
    Apr 2007
    Rochester, NY


    The technique will be different. CTA is imaging of the vessels. CT is imaging of the tissues/organs. CTA includes reconstruction postprocessing. If reconstruction postprocessing is not done, it is not a CTA study. You would have to send it back to the physician for clarificatoin if you still think it was a vascular study, but they forgot the postprocessing in their technique or down code it to a CT. Another note, you cannot bill 76376 or 76377 with a CTA code since the reconstruction is already included in the main CTA code.
    Thanks, Jill

  3. #3
    Join Date
    Apr 2007
    Flower City Coders

    Default Thanks


    Thanks so much for the very clear response - I think I get it now!


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