In 2010, President Barack Obama signed the Patient Protection and Affordable Care Act into law. It prohibits insurance companies from denying coverage to patients with pre-existing conditions and allows children to remain on their parents' insurance plan until they reach the age of 26. In participating states, the act also expanded Medicaid, a government program that provides medical care for individuals with very low incomes. In addition to these changes, the ACA established the federal Healthcare Marketplace. The marketplace helps individuals and businesses shop for quality insurance plans at affordable rates. Low-income individuals who sign up for insurance through the marketplace may qualify for subsidies to help bring down costs.

The National Association of Insurance Commissioners (NAIC), the National Governors' Association and "several insurance and consumer groups" opposed the AHP legislation.[80] The NAIC issued a Consumer Alert regarding AHPs, as proposed in Developing the Next Generation of Small Businesses Act of 2017. H.R. 1774.[80] Their statement said that AHP's "[t]hreaten the stability of the small group market" and provide "inadequate benefits and insufficient protection to consumers."[80] Under AHPs, "[f]ewer consumers would have their rights protected, "AHPs would also be exempt from state solvency requirements, putting consumers at serious risk of incurring medical claims that cannot be paid by their Association Health Plan."[79]
Co-payments were introduced in the 1980s in an attempt to prevent over utilization. The average length of hospital stay in Germany has decreased in recent years from 14 days to 9 days, still considerably longer than average stays in the United States (5 to 6 days).[28][29] Part of the difference is that the chief consideration for hospital reimbursement is the number of hospital days as opposed to procedures or diagnosis. Drug costs have increased substantially, rising nearly 60% from 1991 through 2005. Despite attempts to contain costs, overall health care expenditures rose to 10.7% of GDP in 2005, comparable to other western European nations, but substantially less than that spent in the U.S. (nearly 16% of GDP).[30]
Since 1974, New Zealand has had a system of universal no-fault health insurance for personal injuries through the Accident Compensation Corporation (ACC). The ACC scheme covers most of the costs of related to treatment of injuries acquired in New Zealand (including overseas visitors) regardless of how the injury occurred, and also covers lost income (at 80 percent of the employee's pre-injury income) and costs related to long-term rehabilitation, such as home and vehicle modifications for those seriously injured. Funding from the scheme comes from a combination of levies on employers' payroll (for work injuries), levies on an employee's taxable income (for non-work injuries to salary earners), levies on vehicle licensing fees and petrol (for motor vehicle accidents), and funds from the general taxation pool (for non-work injuries to children, senior citizens, unemployed people, overseas visitors, etc.)
Out-of-pocket maximum: Similar to coverage limits, except that in this case, the insured person's payment obligation ends when they reach the out-of-pocket maximum, and health insurance pays all further covered costs. Out-of-pocket maximum can be limited to a specific benefit category (such as prescription drugs) or can apply to all coverage provided during a specific benefit year.
Many health insurance plans place dollar limits upon the claims the insurer will pay over the course of a plan year. Beginning September 23, 2010, PPACA phases annual dollar limits will be phased out over the next 3 years until 2014 when they will not be permitted for most plans. There is an exception to this phase out for Grandfathered Plans. Except for Grandfathered Plans, beginning September 23, 2012 annual limits can be no lower than $2 million. Except for Grandfathered Plans, beginning January 1, 2014, all annual dollar limits on coverage of essential health benefits will be prohibited.
Provider networks can be used to reduce costs by negotiating favorable fees from providers, selecting cost effective providers, and creating financial incentives for providers to practice more efficiently.[22] A survey issued in 2009 by America's Health Insurance Plans found that patients going to out-of-network providers are sometimes charged extremely high fees.[99][100]

The compulsory insurance can be supplemented by private "complementary" insurance policies that allow for coverage of some of the treatment categories not covered by the basic insurance or to improve the standard of room and service in case of hospitalisation. This can include complementary medicine, routine dental treatment and private ward hospitalisation, which are not covered by the compulsory insurance.
The US health insurance market is highly concentrated, as leading insurers have carried out over 400 mergers from the mid-1990s to the mid-2000s (decade). In 2000, the two largest health insurers (Aetna and UnitedHealth Group) had total membership of 32 million. By 2006 the top two insurers, WellPoint (now Anthem) and UnitedHealth, had total membership of 67 million. The two companies together had more than 36% of the national market for commercial health insurance. The AMA has said that it "has long been concerned about the impact of consolidated markets on patient care." A 2007 AMA study found that in 299 of the 313 markets surveyed, one health plan accounted for at least 30% of the combined health maintenance organization (HMO)/preferred provider organization (PPO) market. In 90% of markets, the largest insurer controls at least 30% of the market, and the largest insurer controls more than 50% of the market in 54% of metropolitan areas.[116] The US Department of Justice has recognized this percentage of market control as conferring substantial monopsony power in the relations between insurer and physicians.[117]
Workers who receive employer-sponsored health insurance tend to be paid less in cash wages than they would be without the benefit, because of the cost of insurance premiums to the employer and the value of the benefit to the worker. The value to workers is generally greater than the wage reduction because of economies of scale, a reduction in adverse selection pressures on the insurance pool (premiums are lower when all employees participate rather than just the sickest), and reduced income taxes.[20] Disadvantages to workers include disruptions related to changing jobs, the regressive tax effect (high-income workers benefit far more from the tax exemption for premiums than low-income workers), and increased spending on healthcare.[20]
The proportion of non-elderly individuals with employer-sponsored cover fell from 66% in 2000 to 56% in 2010, then stabilized following the passage of the Affordable Care Act. Employees who worked part-time (less than 30 hours a week) were less likely to be offered coverage by their employer than were employees who worked full-time (21% vs. 72%).[7]