I am doing some billing for a LCSW and she has one patient in particular with which she has been spending 80-90 minutes each session. While I was billing for her last year when we had the old codes, she didn't have this patient so I never had to deal with it before. I of course have been sending in the regular length (60min) claims with the 90837 code. Is there some add-on code or something I can do to bill for the extra 20-30 minutes she spends with this patient?
Thank you!