A medical delivery system that attempts to manage the quality and cost of medical services that individuals receive. Most managed care systems utilize an HMO, EPO, PPO, or POS network design, limiting to varying degrees the number of providers from which a patient can choose, whether the patient has to use a primary care physician, and whether out-of-network care is covered under the plan. Some managed care plans attempt to improve health quality, by emphasizing prevention of disease.
Indemnity plans were popular before the advent of modern managed care plans, but they have been largely replaced by managed care plans over the last few decades., and the vast majority of privately insured Americans are in some form of managed care plan. Even in the Medicaid and Medicare systems, managed care is playing an increasingly large role: More than three-quarters of Medicaid enrollees are covered under managed care plans, and 31 percent of Medicare beneficiaries were enrolled in managed care plans (Medicare Advantage) by 2016, up from 22 percent in 2008.