Michael F. Cannon, a senior fellow of the libertarian CATO Institute, has argued that the federal government can hide inefficiencies in its administration and draw away consumers from private insurance even if the government offers an inferior product. A study by the Congressional Budget Office found that profits accounted for only about 4 or 5 percent of private health insurance premiums, and Cannon argued that the lack of a profit motive reduces incentives to eliminate wasteful administrative costs.
Medicaid was instituted for the very poor in 1965. Since enrollees must pass a means test, Medicaid is a social welfare or social protection program rather than a social insurance program. Despite its establishment, the percentage of US residents who lack any form of health insurance has increased since 1994. It has been reported that the number of physicians accepting Medicaid has decreased in recent years because of lower reimbursement rates.
Opposite to high-deductible plans are plans which provide limited benefits—up to a low level—have also been introduced. These limited medical benefit plans pay for routine care and do not pay for catastrophic care, they do not provide equivalent financial security to a major medical plan. Annual benefit limits can be as low as $2,000. Lifetime maximums can be very low as well.
In addition to medical expense insurance, "health insurance" may also refer to insurance covering disability or long-term nursing or custodial care needs. Different health insurance provides different levels of financial protection and the scope of coverage can vary widely, with more than 40% of insured individuals reporting that their plans do not adequately meet their needs as of 2007.