We have been billing for drug waste using a JW modifier. Medicare has been denying as duplicate to the drug given. We are billing on 2 seperate lines for this. One for the use and one for the waste. When we call them they tell us it is because we are not in the cap program. Other insurances are paying it with no problem. It was our understanding that you could bill drug waste without being part of the cap program? Can anyone sehd some light on this? Anywhere to find out more specific info? Thanks for any help provided.