The author studies new approaches to the ulcer disease classification conducted in the interests of medical rating board. It is proposed to distinguish acute and chronic forms of this illness in order to diagnose the real prior disease and to determine the category of patients in which ulcer disease was not diagnosed at the preceding stages of medical care. It is reasonable to classify four course phases of illness instead of two, and determine the gravity of ulcer disease which will predetermine medical and rating tactics concerning these patients. In the author's opinion it is necessary to include clinical variants of this disease into classification chart to improve the early diagnosis of recidivations.