Found the answer for why the UOM list was changed. I have attached a screen shot from the NCPDP website. I use a lot of the prefilled pens for diabetes all have different measurements of how many ml's are in a pen. To me, it would be better to say how many pens you need per month for those, most are 1 per week. The NCPDP says that a prefilled pen "term does not quantify a measurable size for dispense". 1 pen is 1 size not sure how that is difficult.........I think inhaler had the same descriptive problem listed
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