ICD–10 is used widely for the world. Because of the necessity of revision in accordance with recent medical progress and changes of social system, the World Health Organization (WHO) started the revision process for ICD–11 in 2007. We have reported the current status of the revision and focused on the domestic committee in the present report. WHO has established the Topical Advisory Group (TAG) in twelve medical domains involving internal medicine, mental health, injury and external causes, rare disease, neoplasms, maternal and prenatal, ophthalmology, health information modeling, dermatology and musculoskeletal, dentistry, neurology. Japan took a responsibility on the internal medicine domain, declaring active participation in the revision process. Therefore, Japan has established a domestic committee to support the Japanese chairman and TAG for internal medicine. We have a lot of problems, such as the language translation, improvement of information model, intake of ontology etc.

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 Nurse scheduling support systems using Genetic Algorithm are now put in practice. However, it is too difficult to describe evaluation functions of schedules that vary from hospital to hospital. Therefore we have developed a method to generate evaluation functions by the screen operation of the user. We divide evaluation functions from the main program by describing evaluation functions using SQL. The user can add the evaluation functions without giving a change to the program. SQL for the description, the evaluation functions can be described how the combination of nesting and the self-binding. Since description of SQL is not easy, we have developed a method to generate SQL by screen operation. We show that this method is able to generate evaluation functions through experiments.

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 It is a common problem how the analogue and/or non-standardized results of physiological tests performed in a specified department should be saved and displayed on an electronic medical record system. To make progress in quality of medical care, it is indisapensible to share medical information chronologically using an electronic medical record system. We have developed a system that files results of otolaryngological tests, especially for audiological tests, from custom-made programs, and have succeeded in referring to them on the electronic medical record clients via URL link, in which both the patient's and the authorized user's ID are transferred to the filing system as a parameter. This method has the advantage that the electronic medical record system and the specified clinical filing system can be connected at a minimum expense, and is effective in sharing the patient' physiological conditions among staffs with quite satisfaction.

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 The purpose of this study was to clarify the factors related to the deviation of the birth dates in Japan. The deviation of birth dates for several specific days was analyzed by some 580,000 patient's birthday data registered in the hospital information system. We analyzed the deviation of the birth dates on the following specific days: (1) New Year's day and the first day of a month; (2) lucky and unlucky days based on the lunar calendar; and (3) weekends and holidays. In the past, the number of births on New Year's Day and the first day of a month were greater than the average day of the year. These deviations were disappeared at present. In recent years, there were few births on Saturdays and Sundays. The result of this study showed that the factitious reporting was caused to the deviation of the birth dates on the first half of the 20th century. Nowadays the obstetric interventions was affected the deviation of birth dates. It was concluded that the deviation of the number of births always reflected social factors.

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