The dental medical record includes the codification of the disease's diagnosis and dental procedure that refer to ICD-10 and ICD-9CM. The purpose of this research is to know the accuracy of the code of dental disease diagnosis and dental procedure before and after using the Pocket Book ICD-10 and ICD-9-CM that was made for the interests of the Dental Clinic in Primary Health Care Of Arjuno. This research was pre experiment One Group Pretest Posttest, using a quantitative approach, before and after using the pocket book. The instrument in this research was the check list. The number of samples were 40 dental medical records. The developing of the Pocket Book cont ain especially the codes of the dental disease is with code K CM and ICD-9 coded for dental procedures. This Pocket Book is referred to patient's visit during the years 2015 to 2016; There were 28 diagnoses of dental diseases and 3 dental procedures; Then added by 35 diagnoses of dental diseases and 2 dental procedures that might be available in the Primary Health Care of Arjuno; So the Pocket Book contains 63 dental diagnoses and 5 dental procedures. The accuracy of the codification of dental diseases diagnoses before and after the implementation of the Pocket Book was 12.5% to become 85% accurate. The accuracy of the codification of dental procedures, before and after implementation of the Pocket Book was 0% to 52.5% accurate. The independent Z-test was obtained a value of Sig. 0.000 (<0.05), that there is a difference of dental procedures codification between before and after the implementation of the Pocket Book; With the increased accuracy of 73% for the codification of dental diagnoses' diseases and 52% for the codification of dental procedures.