I had a similar situation not too long ago but with a Medicare patient. This pt has Anthem. This pt went to E.R. b/c he fell and got glass in his knee. (did not see us in E.R.) pt came to us for follow up E.R. visit since we are family md, still glass in knee so we dr did an I & D. He came back for a follow up on this and Dr sent him to a specialist b/c there was still problems with his knee. specialist request surgery b/c there is still glass in the knee. Pt comes here for pre-op clearance (this is policy of local hospital, surgeon is not doing h&P). is there a modifier that would be appropriate to bill for this during a global period?