Does anyone know if there is a time limit to post an addendum to a note? We use EMR. For example; a patient comes in for an office visit, the note was coded with a new patient visit; however the patient is an established patient and the wrong code was assigned. Now I need the physician to add an addendum to change the code but it has been 2-3 days since the physician electronically signed off on the note. Our system will let you reopen the note after 24 hours only to make corrections.