[Relations with emergency medical care and primary care doctor, home health care].

Medical care for an ultra-aging society has been shifted from hospital-centered to local community-based. This shift has yielded the so-called Integrated Community Care System. In the system, emergency medical care is considered important, as primary care doctors and home health care providers play a crucial role in coordinating with the department of emergency medicine. Since the patients move depending on their physical condition, a hospital and a community should collaborate in providing a circulating service. The revision of the medical payment system in 2014 clearly states the importance of "functional differentiation and strengthen and coordination of medical institutions, improvement of home health care". As part of the revision, the subacute care unit has been integrated into the community care unit, which is expected to have more than one role in community coordination. The medical fee has been set for the purpose of promoting the home medical care visit, and enhancing the capability of family doctors. In the section of end-of-life care for the elderly, there have been many issues such as reduction of the readmission rate and endorsement of a patient's decision-making, and judgment for active emergency medical care for patient admission. The concept of frailty as an indicator of prognosis has been introduced, which might be applied to the future of emergency medicine. As described above, the importance of a primary doctor and a family doctor should be identified more in the future; thereby it becomes essential for doctors to closely work with the hospital. Advancing the cooperation between a hospital and a community for seamless patient-centered care, the emergency medicine as an integrated community care will further develop by adapting to an ultra-aging society.