Hello. If I am billing 99205 for a new Pt and the medical assistant did a blood draw for Cancer Screening, do I bill 99205,25 and 36415? I am getting mixed information about this. Some people said to not use a modifier, some people said use 25. I also saw one post that they use 90. A claim got sent back to our EMR stating modifier mismatch.We billed 99205,25 and 36415.