The purpose of this study is to identify standardized items from Hospital Discharge Abstract and Analysis data by using UHDDS(Uniform Hospital Discharge Data Sets in USA) and to ascertain the computerization in tertiary hospitals. The data were collected by questionnaire survey, responded 38 hospitals(86.4%) out of 44 tertiary hospitals, and the conclusions are as follows. 1. As for the general characteristics of patient; hospital registration number, patient name, sex and social identification number were reported to 0.92%. 2. As for admission and discharge aspects; admission date was showed 0.92, type of admission and insurance were 0.87%, discharge date 0.92%, the code of primary condition, other diagnoses and primary procedure were 0.89%, disposition of discharge was 0.61%. 3. As for the other characteristics; attending physician license number and name of operating physician were showed 0.87%, birth weight of newborn 0.74%, nationality 0.44%. 4. As for the order communicating system, computerization for the medical record management was showed 57.9%, administration of outpatient 53.6%, administration of inpatient 44.7%, administration of emergency care 28.9%. Judging from the study, the development of Korean Uniform Hospital Discharge Data Sets using Discharge Abstract and Analysis System is applicable to the national wide collection of statistics on the diseases for the discharged patients.