Patient was seen for post op check up in the office and the physician noticed an abscess on the wound she was sent to the hospital for an I&D on the same day.its my understanding that only the I&D could be billed and not the E&M for post op complication. Need help if I am wrong. While the doctor was doing procedure he said the previous rotator cuff repair did not work do to the infection. If the physician goes back in after infection is cured can I rebill for second repair? Also I am a little confused as to which cot code to use for the I&D. He did a primary closure with a drain placement.would it be the 23031 or the 10180? Thanks for anyone that will help.