The U.S. health care system continues to rely on a diverse and poorly organ
ized health care safety net to provide care for its uninsured and underinsu
red residents. Last year, the Institute of Medicine (IOM) published a repor
t entitled America's Health Care Safety Net: Intact but Endangered. The IOM
cited seveal threats to the safety net, including inadequate monitoring of
safety net function, poor integration of services, financial threats for c
ore safety net providers, and the destabilizing effects of a rapid shift fr
om traditional Medicaid to Medicaid managed care products. This paper revie
ws the findings of the IOM report, highlighting the key issues for emergenc
y medicine. In response to the IOM's challenges, emergency departments shou
ld be used more effectively to monitor local safety net viability and to en
hance the integration of community health care safety net delivery systems.