Order Code RS21731
Updated June 29, 2005
CRS Report for Congress
.Received through the CRS Web
Medicare: Part B Premium Penalty
Specialist in Social Legislation
Domestic Social Policy Division
Medicare is a nationwide health insurance program for the aged and certain
disabled persons. Medicare consists of two distinct parts — Part A (Hospital Insurance)
program and Part B (Supplementary Medical Insurance) program. The Part A program
is financed primarily through payroll taxes levied on current workers and their
employers. Part B is financed through a combination of monthly premiums paid by
current enrollees and general revenues. The 2005 premium is $78.20 per month.
Medicare Part B is a voluntary program. People generally enroll in Part B when
they turn 65. Persons who delay enrollment in the program after their initial enrollment
period are subject to a premium penalty. This penalty is a surcharge equal to 10% of the
premium amount for each 12 months of delayed enrollment. There is no upper limit on
the amount of the surcharge that may apply. Further, the penalty continues to apply for
the entire time the individual is enrolled in Part B.
The Part B delayed enrollment penalty provision was included in the original
Medicare legislation which was enacted in 1965. This provision was included to
prevent adverse selection. Adverse selection occurs when only those persons who think
they need the benefit actually enroll in the program. When this happens, per capita costs
are driven up, thereby causing more persons (presumably the healthier, and less costly,
ones) to drop out of the program. The intention was to encourage all persons to enroll.
Since most persons over 65 are enrolled in Part B, the costs are spread over the majority
of this population group. Per capita costs are less than would be the case if adverse
selection had occurred.
This report discusses how the Part B premium penalty operates and reviews
exceptions to the penalty (including those for certain military retirees). The report will
be updated if legislative changes occur.
Enrollment in Medicare Part B
Aged. Most persons become entitled to Medicare Part A when they turn age 65.
This entitlement is based on their own or their spouse’s work in covered employment and
the payment of the Medicare payroll tax during their working careers. Persons who have
applied for Social Security or railroad retirement benefits automatically receive a
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Medicare card when they turn 65. Persons who have not applied for Social Security or
railroad retirement benefits must file an application for Medicare benefits.
An individual who becomes entitled to Medicare Part A is automatically enrolled in
Part B unless he or she specifically refuses this coverage. An aged person not entitled to
Part A may still enroll in Part B.1
Disabled. Medicare coverage is available for persons who have received cash
payments for 24 months under the Social Security or railroad retirement disability
programs. These persons automatically receive a Medicare card and are automatically
enrolled in Part B unless they specifically decline such coverage.
Initial Enrollment Periods. Some persons are required to file an application for
Medicare benefits. These include persons who have not applied for Social Security or
railroad retirement benefits because they are still working. Also included are certain
federal, state and local government workers who are not entitled to cash benefits under
these programs, but who are entitled to Medicare benefits. Further, aged persons not
entitled to Part A must file an application if they wish to obtain Part B coverage.
A person required to file an application for Medicare benefits should do so during
an initial enrollment period in order to avoid the Part B delayed enrollment penalty. A
person’s initial enrollment period is seven months long. It begins three months before the
month in which the individual first meets the eligibility requirements.
General Enrollment Period. If an individual does not establish eligibility during
his or her initial enrollment period, that individual must wait until the next general
enrollment period. In addition, persons who specifically decline Part B coverage, or
terminate Part B coverage, must also wait until the next general enrollment period to
enroll or reenroll.
There is a three-month general enrollment period from January 1-March 31, each
year. Coverage does not begin until July 1 of that year. Further, a delayed enrollment
penalty may apply.
The Part B monthly premium is increased for persons who enroll after their initial
enrollment period and/or reenroll after a termination of coverage. This is known as the
“delayed enrollment penalty.” The penalty is a 10% surcharge for each 12 months of
delay in enrollment and/or reenrollment. The length of the period equals: (1) the number
of months that elapse between the end of the initial enrollment period and the end of the
enrollment period in which the individual actually enrolls; and (2) for a person that
reenrolls, the months that elapse between the termination of coverage and the close of the
enrollment period in which the individual enrolls. For example, if an individual’s first
All persons entitled to Part A are entitled to enroll in Part B. An aged person not entitled to Part
A may enroll in Part B if he or she is a resident of the United States. Further, the individual must
either be a citizen or an alien lawfully admitted for permanent residence who has resided in the
United States continuously for the immediately preceding five years.
enrollment period ends in September 2002, and the individual enrolled in the 2005
general enrollment period, the surcharge would be 20%. (This is a total of 30 months
delayed enrollment — but only two full 12-month periods.)
There is no upper limit on the amount of the surcharge that may apply. Further, the
penalty continues to apply for the entire time the individual is enrolled in Part B.
Exceptions to Penalty
Working Aged. A working individual and/or spouse of a working individual may
be able to delay enrollment in Medicare Part B without being subject to the delayed
enrollment penalty. Delayed enrollment is permitted when an individual 65 or over has
group health insurance coverage based on the individual’s or spouse’s current
employment (with an employer with 20 or more employees).
Delayed enrollment is also permitted for certain disabled persons. These are persons
who have group health insurance coverage based on their own or a family member’s
current employment with a large group health plan. A large group health plan is one
which covers 100 or more employees.2,3
Individuals who are permitted to delay enrollment have their own special enrollment
periods. A special enrollment period begins when current employment ends or when
coverage under the plan ends. The special enrollment period ends eight months later.
Individuals who fail to enroll in this period are considered to have delayed enrollment and
could become subject to the penalty.
Military Retirees. Health care coverage for military retirees was expanded by the
FY2001 Defense authorization bill (P.L. 106-398). This legislation authorized a
permanent comprehensive health care benefit for Medicare-eligible retirees who are
enrolled in Part B. These military retirees were made eligible for health care within
TRICARE, the military health care system, effective October 1, 2001. TRICARE for Life
Persons permitted to delay coverage without penalty are those persons whose Medicare benefits
are determined under the Medicare secondary payer (MSP) program. Under MSP, an employer
(with 20 or more employees) is required to offer workers age 65 and over (and workers spouses
age 65 and over) the same group health insurance coverage as is made available to other
employees. The worker has the option of accepting or rejecting the employer’s coverage. If he
or she accepts the coverage, the employer plan is primary (i.e., pays benefits first) for the worker
and/or spouse over age 65. Medicare becomes the secondary payer (i.e., fills in the gaps in the
employer plan, up to the limits of Medicare’s coverage). Similarly, a group health plan offered
by an employer with 100 or more employees is the primary payer for employees or their
dependents who are on the Medicare disability program.
The Balanced Budget Act of 1997 (BBA 97) added an additional exception to the penalty. This
exception is for disabled persons who: (a) at the time they first become eligible for Part B are
enrolled in a group health plan (regardless of size) by virtue of their current or former
employment, and (b) whose continuous enrollment under the plan is involuntarily terminated at
a time when their enrollment in the plan is by virtue of their or their spouse’s former (i.e., not
current) employment. These individuals have a special six-month enrollment period beginning
on the first day of the month in which the termination occurs. Individuals who fail to enroll
during this period would be considered to have delayed enrollment.
serves as a second payer to Medicare, paying cost sharing amounts for services covered
under Medicare. The beneficiaries are eligible for TRICARE for Life benefits not
covered by Medicare. It should be noted that eligibility for TRICARE for Life is
contingent on enrollment in Part B. Any person not currently enrolled must do so in order
to obtain the TRICARE benefits.
Section 625 of the Medicare Prescription Drug, Improvement, and Modernization
Act of 2003 (MMA) waived the Part B enrollment penalty for military retirees, age 65 and
over, who enrolled in the TRICARE for Life program from 2001-2004. A special
enrollment period applied for these persons, which ended December 31, 2004. The
waiver applies to premiums for months beginning January 1, 2004.4
Related Part A Provisions
The vast majority of persons turning age 65 are automatically entitled to Medicare
Part A based on their own or their spouse’s work in covered employment. Most persons
not automatically covered under Part A have health insurance coverage through a former
government employer. However, some persons may need Part A protection. These
persons may voluntarily purchase Part A coverage.5 The Part A premium is equal to the
actuarial value of the Part A benefit ($375 in 2005). Persons who have at least 30 quarters
of covered employment have a reduced Part A premium ($206 in 2005).6, 7 Persons who
voluntarily purchase Part A must also purchase Part B.
A penalty is imposed for persons who delay Part A enrollment beyond their initial
enrollment period (which is the same seven-month period applicable for enrollment in
Part B). However, both the amount of the penalty and the duration of the penalty are
different than under Part B. Persons who delay Part A enrollment for at least 12 months
The Secretary of the Health and Human Services is required to rebate any penalties paid for
months on or after Jan. 2004, which no longer are applicable as a result of this provision.
An individual eligible to enroll must be a resident of the United States. Further, the individual
must either be a citizen or an alien lawfully admitted for permanent residence who has resided
in the United States continuously for the immediately preceding five years.
BBA 97 specifies that the Part A premium amount is zero for certain public retirees. An
individual covered under this provision is one who establishes to the satisfaction of the Secretary
that the individual was receiving cash benefits under a qualified state or local government
retirement system on the basis of the individual’s employment over at least 40 calendar quarters
(or on the basis of some combination of such covered employment and quarters of coverage
under social security totaling at least 40 quarters). For each of the preceding 84 months the
individual must have been enrolled in Part A and not have had his or her premium paid by a
On Dec. 21, 2000, the President signed into law P.L. 106-554, the Consolidated Appropriations
Act, 2001. This law exempts certain state and local retirees, retiring prior to Jan. 1, 2002, from
the Part A delayed enrollment penalty. These are groups of persons for whom the state or local
government elects to pay the Part A delayed enrollment penalty for life. The amount of the
penalty which would otherwise be assessed is to be reduced by an amount equal to the total
amount of Medicare payroll taxes paid by the employee and the employer on behalf of the
employee. The provision applies to premiums beginning Jan. 2002.
beyond their initial enrollment period are subject to a 10% premium surcharge.8 The
surcharge is 10% regardless of the length of the delay. Further the surcharge only applies
for a period equal to twice the number of years (i.e., 12-month periods) during which an
individual delays enrollment. Thus, an individual who delays enrollment for three years
under Part A would be subject to a 10% penalty for six years. A person who delays
enrollment for the same three-year period under Part B would be subject to a permanent
The Part B delayed enrollment penalty provision was included in the original
Medicare legislation which was enacted in 1965.10 This provision was included to prevent
adverse selection. Adverse selection occurs when only those persons who think they need
the benefit actually enroll in the program. When this happens, per capita costs are driven
up, thereby causing more persons (presumably the healthier, and less costly, ones) to drop
out of the program. The intention was to encourage all persons to enroll. Since most
persons over 65 are enrolled in Part B, the costs are spread over the majority of this
population group. Per capita costs are less than would be the case if adverse selection had
Periodically, proposals have been offered to modify or eliminate the Part B premium
penalty either for all enrollees or alternatively for a selected population group. For
example, a number of persons suggested that the penalty should not apply to certain
military retirees who declined Part B coverage. As noted above, these persons now have
access to TRICARE for Life, provided they enroll in Part B. MMA waived the Part B
penalty for persons enrolling in both programs by the end of 2004.
Some have suggested further modifying the penalty provision to limit both the
amount and the duration of the surcharge, such as is the case for delayed Part A
An individual enrolled in a health maintenance organization (HMO) can sign up for Part A at
any time while in the HMO and up to eight months after HMO coverage has ended. Any time
the individual is enrolled with the HMO does not count toward determining whether the
individual has delayed enrollment.
Prior to enactment of the Consolidated Omnibus Budget Reconciliation Act of 1985 (COBRA),
there was no upper limit on the amount of the Part A surcharge or duration of the surcharge.
COBRA limited the amount of the Part A surcharge to 10% and the duration to twice the period
of delayed enrollment.
Since 1965, some changes have been made to the Part B enrollment provisions. The Social
Security Amendments of 1972 (P.L. 92-603) removed the prior three-year limit for initial
enrollment and reenrollment after an initial termination. Also in 1972, enrollment in Part B was
made automatic for those entitled to Part A. Since most persons voluntarily enroll in Part B,
there was now less likelihood that a person might inadvertently not obtain Part B protection;
these persons still retained their right to reject Part B coverage. The Omnibus Budget
Reconciliation Act of 1980 (P.L. 96-499) provided for continuous open enrollment; further, the
provision preventing reenrollment more than twice was removed. The Omnibus Budget
Reconciliation Act of 1981 (P.L. 97-35) repealed the 1980 continuous open enrollment provision;
the provision permitting unlimited reenrollment was retained. Other conforming changes have
also been made over the period, reflecting such things as the coverage of the disabled population
and the addition of special enrollment periods for persons with group health plans.
enrollment. While some of the reasons for limiting the Part A penalties could also be
offered for Part B, there are some significant differences. First, since almost all aged
persons are automatically entitled to Part A, the Part A delayed enrollment penalty could
potentially affect only a small number of persons compared to the potential number under
Part B. Second, persons who voluntarily enroll in Part A pay the full actuarial cost of Part
A coverage; conversely, Part B enrollees pay only 25% of the actuarial cost with federal
general revenues picking up the remainder. Third, the amount of the maximum 10% Part
A surcharge is considerably larger than what a maximum 10% Part B surcharge would be
and thus is more likely to serve as a disincentive to delayed enrollment.
As of this writing, the 109th Congress does not appear to be considering further
modifications to the delayed enrollment penalty provisions.