is about billing code D0120: periodic oral evaluation - established patient periodic oral evaluation - established patient D0120 An evaluation performed on a patient of record to determine any changes in the patients dental and medical health status since a previous comprehensive or periodic evaluation. This includes an oral cancer evaluation and periodontal screening where indicated, and may require interpretation of information acquired through additional diagnostic procedures. Report additional diagnostic procedures separately. ISBN:1935201387#CDT 2011-2012 Current Dental Terminology, Chapter 1 billing code for clinical oral evaluations periodic oral evaluation