Individuals who are eligible for Medicare automatically receive Hospital Insurance (HI), known as part A, which helps pay for inpatient hospital, skilled nursing facility, hospice, and certain home health care services. Beneficiaries pay no premium for this coverage but are liable for required deductibles, coinsurance, and copayment amounts. (See table 1.) Medicare eligible beneficiaries may elect to purchase Supplementary Medical Insurance (SMI), known as part B, which helps pay for selected physician, outpatient hospital, laboratory, and other services. Beneficiaries must pay a premium for part B coverage, currently $50 per month. Beneficiaries are also responsible for part B deductibles, coinsurance, and copayments. Most Medicare beneficiaries have some type of supplemental coverage to help pay for Medicare cost-sharing requirements as well as some benefits not covered by Medicare. They obtain this coverage either through employers, Medicare+Choice plans, state Medicaid programs, or Medigap policies sold by private insurers. About one-third of Medicare's 39 million beneficiaries have employer- sponsored supplemental coverage. These benefits typically pay for some or all of the costs not covered by Medicare, such as coinsurance, deductibles, and prescription drugs. However, many beneficiaries do not have access to employer-sponsored coverage. A recent survey found that more than 70 percent of large employers with at least 500 employees did not offer these health benefits to Medicare-eligible retirees. Small employers are even less likely to offer retiree health benefits. Approximately 15 percent of Medicare beneficiaries enroll in Medicare+Choice plans, which include health maintenance organizations and other private insurers who are paid a set amount each month to provide all Medicare-covered services. These plans typically offer lower cost-sharing requirements and additional benefits compared to Medicare's traditional fee-for-service program, in exchange for a restricted choice of providers. However, Medicare+Choice plans are not available in all parts of the country. As of February 2001, about a third of all beneficiaries lived in counties where no Medicare+Choice plans were offered. About 17 percent of Medicare beneficiaries receive assistance from Medicaid, the federal-state health financing program for low-income aged and disabled individuals. All Medicare beneficiaries with incomes below the federal poverty level can have their Medicare premiums and cost sharing paid for by Medicaid. Beneficiaries with incomes slightly above the poverty level may have all or part of their Medicare premium paid for by Medicaid. Also, some low-income individuals may be entitled to full Medicaid benefits (so called "dual eligibles"), which include coverage for certain services not available through Medicare, such as outpatient prescription drugs. However, the income level at which beneficiaries qualify for full Medicaid benefits varies, as determined by each state, and many Medicare beneficiaries with low incomes may not qualify. Medigap is the only supplemental coverage option available to all beneficiaries when they initially enroll in Medicare at age 65 or older. Medigap policies are offered by private insurance companies in accordance with state and federal insurance regulations. In 1999, more than 10 million individuals--more than one-fourth of all beneficiaries-- were covered by Medigap policies. The Omnibus Budget Reconciliation Act (OBRA) of 1990 required that Medigap policies be standardized and allowed a maximum of 10 different benefit packages offering varying levels of supplemental coverage to be provided. All policies sold since July 31, 1992 have offered one of the 10 standardized packages, known as plans A through J. (See table 2.) Policies sold prior to this time were not required to comply with the standard benefit package requirements. Under OBRA 1990, Medicare beneficiaries are guaranteed access to Medigap policies within 6 months of enrolling in part B regardless of their health status. Subsequent laws have added guarantees for certain other beneficiaries. Beneficiaries who enrolled in a Medicare+Choice plan when first becoming eligible for Medicare and then leave the plan within one year are also guaranteed access to any Medigap policy; those who terminated their Medigap policy to join a Medicare+Choice plan can return to their previous policy or, if the original policy is not available, be guaranteed access to plans A, B, C, or F. Also, individuals whose employers eliminate retiree benefits or whose Medicare+Choice plans leave the program or stop serving their areas are guaranteed access to these 4 standardized Medigap policies. However, none of these 4 guaranteed policies include prescription drug coverage. Otherwise, insurers can either deny coverage or charge higher premiums to beneficiaries who are older or in poorer health. Medicare's design has changed little since its inception 35 years ago, and in many ways has not kept pace with changing health care needs and private sector insurance practices. Medicare cost-sharing requirements are not well designed to discourage unnecessary use of services. At the same time, they can create financial barriers to care. In addition, the lack of a cost-sharing limit can leave some beneficiaries with extensive health care needs liable for very large Medicare expenses. Moreover, gaps in Medicare's benefit package can contribute to substantial financial burdens on beneficiaries who lack supplemental insurance or Medicaid coverage. Health insurers commonly design cost-sharing provisions--in the form of deductibles, coinsurance, and copayments--to ensure that beneficiaries are aware there is a cost associated with the provision of services and to encourage them to use services prudently. Ideally, cost sharing should encourage beneficiaries to evaluate the need for discretionary care but not discourage necessary care. Optimal cost-sharing designs would generally require coinsurance or copayments for services that may be discretionary and could potentially be overused, and would also aim to steer patients to lower cost or better treatment options. Care must be taken, however, to avoid setting cost-sharing amounts so high as to create financial barriers to necessary care. The benefit packages of Medicare+Choice plans illustrate cost-sharing arrangements that have been designed to reinforce cost containment and treatment goals. Most Medicare+Choice plans charge a small copayment for physician visits ($10 or less) and emergency room services (less than $50). Relatively few Medicare+Choice plans charge copayments for hospital admissions. Plans that offer prescription drug benefits typically design cost-sharing provisions that encourage beneficiaries to use cheaper generic drugs or brand name drugs for which the plan has negotiated a discount. Medicare fee-for-service cost-sharing rules diverge from these common insurance industry practices in important ways. For example, as indicated in table 1, Medicare imposes a relatively high deductible for hospital admissions, which are rarely optional. In contrast, Medicare requires no cost sharing for home health care services, even though historically high utilization growth and wide geographic disparities in the use of such services have raised concerns about the potentially discretionary nature of some services. Medicare also has not increased the part B deductible since 1991. For the last 10 years the deductible has remained constant at $100 and has thus steadily decreased as a proportion of beneficiaries' real income. Also unlike most employer-sponsored plans for active workers, Medicare does not limit beneficiaries' cost-sharing liability, which can represent a significant share of their personal resources. Premiums, deductibles, coinsurance, and copayments that beneficiaries are required to pay for services that Medicare covers equaled an estimated 23 percent of total Medicare expenditures in 2000. The average beneficiary who obtained services in 1997 had a total liability of $1,451, consisting of $925 in Medicare copayments and deductibles in addition to the $526 in annual part B premiums required that year. The burden of Medicare cost sharing can be much higher, however, for beneficiaries with extensive health care needs. In 1997, the most current year of available data on the distribution of these costs, slightly more than 3.4 million beneficiaries (11.4 percent of beneficiaries who obtained services) were liable for more than $2,000. Approximately 750,000 of these beneficiaries (2.5 percent) were liable for more than $5,000, and about 173,000 beneficiaries (0.6 percent) were liable for more than $10,000. In contrast, private employer-sponsored health plans typically limit maximum annual out-of-pocket costs for covered services to less than $2,000 per year for single coverage. Medicare does not cover some services that are commonly included in private insurers' benefit packages. The most notable omission in Medicare's benefit package is coverage for outpatient prescription drugs. This benefit is available to most active workers enrolled in employer- sponsored plans. More than 95 percent of private employer-sponsored health plans for active workers cover prescription drugs, typically providing comprehensive coverage with relatively low cost-sharing requirements. Current estimates suggest that the combination of Medicare's cost-sharing requirements and limited benefits leaves about 45 percent of beneficiaries' health care costs uncovered. The average beneficiary in 2000 is estimated to have incurred about $3,100 in out-of-pocket expenses for health care-- an amount equal to about 22 percent of the average beneficiary's income. Some beneficiaries potentially face much greater financial burdens for health care expenses. For example, elderly beneficiaries in poor health and with no Medicaid or supplemental insurance coverage are estimated to have spent 44 percent of their incomes on health care in 2000. Low- income single women over age 85 in poor health and not covered by Medicaid are estimated to have spent more than half (about 52 percent) of their incomes on health care services. These percentages are expected to increase over time as Medicare premiums and costs for prescription drugs and other health care goods and services rise faster than incomes. While more than one-fourth of beneficiaries have Medigap policies to fill Medicare coverage gaps, these policies can be expensive and provide only limited protection from catastrophic expenses. Medigap drug coverage in particular offers only limited protection because of high cost sharing and low coverage caps. More than 10 million Medicare beneficiaries have Medigap policies to cover some potentially high costs that Medicare does not pay, including cost-sharing requirements, extended hospitalizations, and some prescription drug expenses. By offering a choice among standardized plans, beneficiaries can match their coverage needs and financial resources with plan coverage. Medigap policies are widely available to beneficiaries including those who are not eligible for or do not have access to other insurance to supplement Medicare, such as Medicaid or employer- sponsored retiree benefits. In fact, most Medicare beneficiaries who do not otherwise have employer-sponsored supplemental coverage, Medicaid, or Medicare+Choice plans purchase a Medigap policy, demonstrating the value of this coverage to the Medicare population. Medigap policies can be expensive. The average annual Medigap premium was more than $1,300 in 1999. Premiums varied widely based on the level of coverage purchased. Plan A, which provides the fewest benefits, was the least expensive with average premiums paid of nearly $900 per year. The most popular plans--C and F--had average premiums paid of about $1,200. The most comprehensive plans--I and J--were the most expensive, with average premiums around $1,700. (See table 3.) Premiums also vary widely across geographic areas and insurers. For example, average annual premiums in Massachusetts ($1,915) were 45 percent higher than the national average. While varying average premiums may reflect geographic differences in terms of use of Medicare and supplemental services and costs, beneficiaries in the same state may face widely varying premiums for a given plan type offered by different insurers. For example, in Nevada, plan A premiums for a 65-year-old ranged from $446 to as much as $1,004, depending on the insurer. Similarly, in Florida, plan F premiums for a 65-year-old male ranged from $1,548 to $2,123; and in Maine, plan J premiums ranged from $2,697 to $3,612. Medigap policies are becoming more expensive. One recent study reports that premiums for the three Medigap plan types offering prescription drug coverage (H, I, and J) have increased the most rapidly--by 17 to 34 percent in 2000. Medigap plans without prescription drug coverage rose by 4 to 10 percent in 2000. A major reason premiums are high is that a large share of premium dollars are used for administrative costs rather than benefits. More than 20 cents from each Medigap premium dollar is spent for costs other than medical expenses, including administration. Administrative costs are high, in part, because nearly three-quarters of policies are sold to individuals rather than groups. The share of premiums spent on benefits varies significantly among carriers. The 15 largest sellers of Medigap policies spent between 64 and 88 percent of premiums on benefits in 1999. The share of premiums spent on benefits is lower for Medigap plans than either typical Medicare+Choice plans or health benefits for employees of large employers. Also, 98 percent of Medicare fee-for-service funds are used for benefits. While Medigap policies cover some costs beneficiaries would otherwise pay out of pocket, Medigap policies have limits and can still leave beneficiaries exposed to significant out-of-pocket costs. Medigap prescription drug coverage in particular leaves beneficiaries exposed to substantial financial liability. Prescription drugs are of growing importance in medical treatment and one of the fastest growing components of health care costs. Medigap policies with a drug benefit are the most expensive yet the benefit offered can be of limited value to many beneficiaries. For example, Medigap policies offering drug coverage typically cost much more than policies without drug coverage--the most popular plan with prescription drug coverage (plan J) costs on average $450 more than the most popular plan without drug coverage (plan F)--although the benefit is at most $1,250 or $3,000, depending on plan type, and under the Medigap plan with the most comprehensive drug coverage, type J, a beneficiary would have to incur $6,250 in prescription drug costs to get the full $3,000 benefit, because of the plan's deductible and coinsurance requirements. The high cost and limited benefit may explain why more than 90 percent of beneficiaries with one of the standardized Medigap plans purchased standard Medigap plans that do not include drug benefits. Further, Medicare beneficiaries who do not purchase Medigap policies when they initially enroll in part B at age 65 or older are not guaranteed access to the Medigap policies with prescription drug coverage in most states. Insurers may then either deny coverage or charge higher premiums, especially to Medicare beneficiaries with any adverse health conditions. The Medigap standard prescription drug benefit differs greatly from that typically offered by employer-sponsored plans for active employees or Medicare-eligible retirees. The Medigap prescription drug benefit has a $250 deductible, requires 50 percent coinsurance, and is limited to $1,250 or $3,000 depending on the plan purchased. In contrast, employer- sponsored plans typically require small copayments of $8 to $20 or coinsurance of about 20 to 25 percent, depending on whether the enrollees purchase generic brands, those for which the plan has negotiated a price discount, or other drugs. Further, few employer-sponsored health plans have separate deductibles or maximum annual benefits for prescription drugs. These plans may also offer enrollees access to discounted prices the plans have negotiated even when the beneficiary is paying the entire cost. Even though Medicare's original design has been criticized as outmoded, it included various cost-sharing requirements intended to encourage prudent use of services. These requirements have also traditionally been features of private insurance. However, Medigap's first-dollar coverage--the elimination of any deductibles or coinsurance associated with the use of specific services--undermines this objective. All standard Medigap plans cover hospital and physician coinsurance, while nearly all beneficiaries with standardized Medigap plans purchase plans covering the full hospital deductible, and most purchase plans covering the full skilled nursing home coinsurance and part B deductible. First-dollar coverage reduces financial barriers to health care, but it also diminishes beneficiaries' sensitivity to costs and could thus increase unnecessary service utilization and total Medicare program costs. A substantial body of research clearly indicates that Medicare spends more on beneficiaries with supplemental insurance relative to beneficiaries who have Medicare coverage only. For example, an analysis of 1993 and 1995 data found that Medicare per capita expenditures for beneficiaries with Medigap insurance were from $1,000 to $1,400 higher than for beneficiaries with Medicare only. Medicare per capita spending on beneficiaries with employer-sponsored plans was $700 to $900 higher than for beneficiaries with Medicare only. Some evidence suggests that first-dollar, or near first-dollar, coverage may partially be responsible for the higher spending. For example, one study found that beneficiaries with Medigap insurance use 28 percent more medical services (outpatient visits and inpatient hospital days) relative to beneficiaries who did not have supplemental insurance, but were otherwise similar in terms of age, sex, income, education, and health status. Service use among beneficiaries with employer-sponsored supplemental insurance (which often reduces, but does not eliminate, cost sharing) was approximately 17 percent higher than the service use of beneficiaries with Medicare coverage only. Unlike Medigap policies, employer-sponsored supplemental insurance policies and Medicare+Choice plans typically reduce beneficiaries' financial liabilities but do not offer first-dollar coverage. Although there is a wide variety in design of employer-sponsored insurance plans, many retain cost-sharing provisions. Medicare+Choice plans also typically require copayments for most services. Moreover, unlike the traditional fee- for-service program, Medicare+Choice plans require referrals or prior authorization for certain services to minimize unnecessary utilization.

Summary:
Medicare provides valuable and extensive health care coverage for beneficiaries. Nevertheless, significant gaps leave some beneficiaries vulnerable to sizeable financial burdens from out-of-pocket expenses. Medigap is a widely available source of supplemental coverage. This testimony discusses (1) beneficiaries' potential financial liability under Medicare's current benefit structure and cost-sharing requirements, (2) the cost of Medigap policies and the extent to which they provide additional coverage, and (3) concerns that Medigap's so-called "first dollar" coverage undermines the cost control incentives of Medicare's cost-sharing requirements. GAO found that Medicare's benefits package and cost-sharing requirements leave beneficiaries liable for high out-of-pocket costs. Medigap policies pay for some or all Medicare cost-sharing requirements but do not fully protect beneficiaries from potentially significant out-of-pocket costs such as prescription drug coverage. Medigap first-dollar coverage eliminates the ability of Medicare's cost-sharing requirements to promote prudent use of services.