Here is a comparison of the three health care bills before Congress, including one by House Democrats and an alternative by House Republicans.

In the Senate, Majority Leader Harry Reid, D-Nev., is finalizing legislation merging the work of two committees and making other changes. The Senate Democrats' bill has not yet been made public, so some specifics are unknown.

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The House Democratic bill (Affordable Health Care for America Act):

WHO'S COVERED: About 96 percent of legal residents under age 65 _ compared with 83 percent now. About one-third of the remaining 18 million people under age 65 left uninsured would be illegal immigrants.

COST: The Congressional Budget Office says the bill's cost of expanding insurance coverage over 10 years is $1.055 trillion. The net cost is $894 billion, factoring in penalties on individuals and employers who don't comply with new requirements. That's under President Barack Obama's $900 billion goal. However, those figures leave out a variety of new costs in the bill, including increased prescription drug coverage for seniors under Medicare, so the measure may be around $1.2 trillion.

HOW IT'S PAID FOR: $460 billion over the next decade from new income taxes on single people making more than $500,000 a year and couples making more than $1 million. The original House bill taxed individuals making $280,000 a year and couples making more than $350,000, but the threshold was increased in response to lawmakers' concerns that the taxes would hit too many people and small businesses.

There are also more than $400 billion in cuts to Medicare and Medicaid; a new $20 billion fee on medical device makers; $13 billion from limiting contributions to flexible spending accounts; sizable penalties paid by individuals and employers who don't obtain coverage; and a mix of other corporate taxes and fees.

REQUIREMENTS FOR INDIVIDUALS: Individuals must have insurance, enforced through a tax penalty of 2.5 percent of income. People can apply for hardship waivers if coverage is unaffordable.

REQUIREMENTS FOR EMPLOYERS: Employers must provide insurance to their employees or pay a penalty of 8 percent of payroll. Companies with payrolls under $500,000 annually are exempt _ a change from the original $250,000 level to accommodate concerns of moderate Democrats _ and the penalty is phased in for companies with payrolls between $500,000 and $750,000.

Small businesses _ those with 10 or fewer workers _ get tax credits to help them provide coverage.

SUBSIDIES: Individuals and families with annual income up to 400 percent of poverty level, or $88,000 for a family of four, would get sliding-scale subsidies to help them buy coverage. The subsidies would begin in 2013.

HOW YOU CHOOSE YOUR HEALTH INSURANCE: Beginning in 2013 through a new Health Insurance Exchange open to individuals and, initially, small employers. It could be expanded to large employers over time. States could opt to operate their own exchanges in place of the national exchange if they follow federal rules.

BENEFITS PACKAGE: A committee would recommend a so-called essential benefits package including preventive services. Out-of pocket costs would be capped. The new benefit package would be the basic benefit package offered in the exchange.

INSURANCE INDUSTRY RESTRICTIONS: No denial of coverage based on pre-existing conditions. No higher premiums allowed for pre-existing conditions or gender. Limits on higher premiums based on age.

GOVERNMENT-RUN PLAN: A new public plan available through the insurance exchanges would be set up and run by the secretary of Health and Human Services. Democrats originally designed the plan to pay Medicare rates plus 5 percent to doctors. But the final version _ preferred by moderate lawmakers _ would let the HHS secretary negotiate rates with providers.

CHANGES TO MEDICAID: The federal-state insurance program for the poor would be expanded to cover all individuals under age 65 with incomes up to 150 percent of the federal poverty level, which is $33,075 per year for a family of four. The federal government would pick up the full cost of the expansion in 2013 and 2014; thereafter the federal government would pay 91 percent and states would pay 9 percent.

DRUGS: Grants 12 years of market protection to high-tech drugs used to combat cancer, Parkinson's and other deadly diseases. Phases out the gap in Medicare prescription drug coverage by 2019. Requires the HHS secretary to negotiate drug prices on behalf of Medicare beneficiaries.

ANTITRUST: Would strip the health insurance industry of a long-standing exemption from antitrust laws covering market allocation, price fixing and bid rigging. The bill also would give the Federal Trade Commission authority to look into the health insurance industry at its own initiative.

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The House Republican bill (Common Sense Health Care Reform and Affordability Act):

WHO'S COVERED: About 83 percent of legal residents under age 65 _ roughly in line with the share covered now. The Congressional Budget Office says the GOP bill would only reduce the number of uninsured by 3 million people in 2019.

COST: CBO says the gross cost of the bill is $61 billion over 10 years, but some provisions such as caps on malpractice judgments would also reduce government health care spending. That leaves a net 10-year reduction of $68 billion in the federal deficit.

HOW IT'S PAID FOR: No new taxes, but Republicans would get savings by capping medical liability awards, stepping up efforts to fight Medicare and Medicaid fraud, and setting up an approval process for generic versions of high-tech drugs.

REQUIREMENTS FOR INDIVIDUALS: No mandates.

REQUIREMENTS FOR EMPLOYERS: No mandate to offer coverage to workers or help pay the cost of premiums.

SUBSIDIES: Expands and revamps high-risk pools for people who can't get health insurance because of pre-existing medical conditions. Offers tax breaks to encourage enrollment in health savings accounts. Provides incentive grants to states that take steps to reduce insurance premiums and reduce the number of uninsured.

HOW YOU CHOOSE YOUR HEALTH INSURANCE: Allows individuals to purchase lower-cost coverage across state lines. Encourages auto-enrollment in employer-sponsored plans. Allows small businesses to pool together to buy coverage. CBO says the medical liability caps and other provisions would reduce premiums for people with private insurance, mainly for those who buy their own coverage or work for small businesses.

BENEFIT PACKAGE: No federal standard for basic benefits package. Insurers would have to allow children through age 25 to stay on their parents' coverage. People who participate in wellness programs would get a discount on premiums.

INSURANCE INDUSTRY RESTRICTIONS: Insurers barred from dropping coverage when a person gets sick, except in cases of fraud. No annual or lifetime benefit caps. Continued...