The standardization of classification system is needed for expressing complex medical information as systemic classification system. This is the way that accomplish EMR(Electronic Medical Record) or CPR(Computer based patient Record)and construct basic common language. For this propose, this thesis proposes the multi-axial classification system using parallel coding method that is systemic and flexible properties. The methodology and organization of this thesis as follows. First, an analysis of the classification system of ICD9-CM, ICPM, CPT, KCPM, SNOMED was carried out to retrieval of framework and the code assignment methode. Second, the domain of medical behavior was determined as dental department and the important elements of dental behavior were searched. and then constructed and determined axises using selected elements. Third, the new code system is constructed of these common factors in properties of prediction of hierarchy, brevity, simplicity, flexibility and mnemonic usage. Finally, the framework of classification system for dental was made using multi-axial code system. The result of the this study, the eight bases axis of multi-axial code system is composed of Topography, Procedure, Morphology, Instrument, Material, Anaesthesia, X-ray and Chemical/Drug axis and Disease, History and Result of procedure axis can be added, This study can be basic information of research for construction of classification system of all medical domain.