Recent legislation and delivery system reform efforts are greatly expanding the use of electronic health records. For these efforts to reach their full potential, they must actively involve patients and include patient-reported information about such topics as health behavior, preferences, and psychosocial functioning. We offer a plan for including standardized, practical patient-reported measures as part of electronic health records, quality and performance indexes, the primary care medical home, and research collaborations. These measures must meet certain criteria, including being valid, reliable, sensitive to change, and available in multiple languages. Clinicians, patients, and policy makers also must be able to understand the measures and take action based on them. Including more patient-reported items in electronic health records would enhance health, patient-centered care, and the capacity to undertake population-based research. R ecent health care reforms, including the Affordable Care Act of 2010, the Health Information Technology for Economic and Clinical Health (HITECH) provisions of the American Recovery and Reinvestment Act of 2009, 1 and patient-centered medical home initiatives, 2 place a new emphasis on electronic health records. Within a relatively short period of time, the majority of patient encounters with the health system will be captured electronically. This change from current practice will make the US health care system more similar to the efficient systems in other countries such as the United Kingdom, where nearly 95 percent of physicians use electronic data capture.3 The arrival of the electronic age in health care has the potential to revolutionize patient care by supplying efficient tools to better personalize care and manage populations.This new era will also change clinical health research, because information will be available on millions of encounters in real-world settings, and will make possible rapid-learning health care systems. 4,5 Unfortunately, there is a real danger that data on key patient information and some of the most important determinants of health might not be captured unless specific efforts are undertaken to include those data. This article proposes a list of behavioral and psychosocial data that could be included in electronic health records and addresses long-standing objections to their inclusion.Most electronic health records capture aspects of medical encounters between patients and practitioners, but only from the perspective of providers and payers. A comprehensive understanding of health and optimal treatment of patients requires additional types of information. By all expert estimates, most factors that influence life expectancy and health-related quality of life are outside the health care system. 6,7