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Thread: AS modifer CPT 27447

  1. #1
    Join Date
    Apr 2007

    Unhappy AS modifer CPT 27447

    AAPC: Back to School
    We billed this CPT 27447 with an AS modifier to Medicare and received a rejection of the procedure is inconsistant with modifier used or a required modifier is missing. Does anyone know if even though in the description of the procedure it states (total knee anthroplasty) if we need the LT/RT modifiers? When we called Medicare they stated the AS modifier was correct but required an additional modifier.

  2. #2
    Join Date
    Apr 2007
    Modesto, CA; Central Valley Chapter


    If there was nothing else done that would require another modifier I would guess it is the LT/RT although we have not had a problem with that ourselves.


  3. #3
    Join Date
    Apr 2007


    I agree with Tina, I never had a problem billing with -AS modifier alone if nothing else was done


  4. #4
    Join Date
    Apr 2007
    Montclair, NJ


    That's odd coming from Medicare, I bill this code all the time with only the -AS modifier. I've never once received a denial, I suggest you appeal this.

  5. #5


    I recently had the same issue with Medicare. As I have never had this issue before and no other modifier was required, I just appealed the denial. There is no reason to not pay the claim. Maybe this is a new "glitch" with Medicare??

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