My understanding is that when you do not have a prescription for an item, suppliers are not required to file a claim under "mandatory claims submission", therefore, in that case an ABN is not required. However, to be save, my recommendation is to obtain an ABN anyway and have the patient mark Option 2 so that you do not have to file a claim at all.
If the patient wants a claim filed anyway and marks Option 1, you will need to submit the claim with an EY modifier. If you try to submit the claim with a GA & EY it will reject out. You can only use one or the other modifer.
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