If we see a patient for a diet visit, is it appropriate to bill for the counseling code 99401-99404 if all criteria is met, or is this only billable with a wellness visit? One of our coders thinks this is may be considered an add-on code like the smoking cessation counseling (99406). Also, if our doctor gives the patient a Bumex injection (J1940) or a B-12 injection (J3420), is that billable with the counseling code 99401-99404 along with the administration code 96372?