How do you sort through your Medicare coverage options? When—and how—do you enroll? And what if you have other health insurance? Here is some information to help you when it's time to make decisions about Medicare.

Medicare coverage basics

Medicare, the federal health insurance program that covers most U.S. citizens who are 65 and older, is made up of different parts that help cover specific services.

Original Medicare is divided into hospital insurance (Part A) and medical insurance (Part B), which are run by the federal government. Medicare Part C (Medicare Advantage) and Part D (prescription drug coverage) are provided by private insurance companies approved by Medicare.

Medicare Part A (hospital insurance)

Part A covers services associated with inpatient care in a hospital, skilled nursing facility or psychiatric hospital. It covers charges for the room, meals and nursing services. Part A also covers hospice care and home health care, but not long-term care. Part A is premium-free for most people, but deductibles and coinsurance costs apply to some services.

Medicare Part B (medical insurance)

Part B covers other medical care, including inpatient or outpatient physician care, lab tests, physical therapy and ambulance services. Medicare Part B also covers 100% of the cost of many preventive services. Everyone pays a monthly premium for Part B. People with higher incomes may pay more, while some people will pay less. Beneficiaries will need to meet an annual deductible and after that pay 20% of the Medicare-approved amount for most services.

Medicare Part C (Medicare Advantage)

A Medicare Advantage plan is a private, all-in-one healthcare plan that contracts with Medicare to provide Part A and Part B benefits. A Medicare Advantage plan covers all of the services that Original Medicare covers. Some plans offer extra coverage for expenses not covered by Original Medicare such as vision, hearing and dental costs. Most also offer prescription drug (Part D) coverage. Several types of Medicare Advantage plans may be available, including HMOs and PPOs. There is a separate monthly premium for the Medicare Advantage plan in addition to the monthly Part B premium.

Medicare Part D (prescription drug coverage)

All Medicare beneficiaries are eligible to join a Medicare prescription drug plan offered by private companies or insurers that have been approved by Medicare. Premiums, copayments and coinsurance costs vary by plan, but all cover a broad number of brand-name and generic drugs.

When and how to enroll

If you've been receiving Social Security or Railroad Retirement Board benefits for at least four months before you turn 65, you will be enrolled automatically in Original Medicare Parts A and B. The Social Security Administration will notify you that you've been enrolled, and you'll get your Medicare card in the mail three months before your 65th birthday.

If you are not already receiving Social Security or Railroad Retirement Board benefits and want to sign up for Medicare, you'll need to apply online, by phone or by visiting your local Social Security office.

Your initial enrollment period starts three months before the month you turn 65 and ends three months after the month you turn 65. The start date of your coverage depends on when you enroll.

If you have been automatically enrolled but decide to decline coverage or do not enroll in Medicare Part B during the initial enrollment period, you can enroll later during the annual general enrollment period that runs from January 1 to March 31 each year, with coverage beginning on the first day of the month following the month you sign up. However, late-enrollment penalties may apply in some situations.

What if you already have health insurance through an employer?

You can generally wait to enroll in Medicare past age 65 if you have group health insurance through your employer or your spouse's employer. Most employers can't require employees or covered spouses to enroll in Medicare to retain eligibility for their group health benefits. However, some small employers can, so contact your plan's benefits administrator to find out if you're required to sign up for Medicare when you reach age 65 and how your group health coverage works with Medicare.

If you have Medicare and group health coverage, both insurers may cover your medical costs, based on "coordination of benefit" rules. The primary insurer pays your claim first, up to the limits of the policy. The secondary insurer pays your claim only if there are costs the primary insurer didn't cover, but all uncovered costs may not be paid.

Because Medicare Part A is free for most people, consider enrolling in Part A even if you have employer coverage to help fill any coverage gaps. Medicare Part B requires premium payments, so compare the costs and benefits to your employer's plan.

If you didn't sign up for Medicare when you were first eligible because you had group health coverage through an employer, late-enrollment penalties generally do not apply. You can sign up for Medicare Part A and/or Part B at any time as long as you are covered by a group health plan through your own employer or your spouse's employer. If you stop working or your coverage ends, you will have an eight-month period to sign up without penalty.

What if you don't like the coverage you've chosen?

You can make coverage changes at certain times during the year. From October 15 through December 7, you can join, switch or drop a Medicare health or drug plan for the following year. You may also be able to make changes during special enrollment periods.

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This is not intended to provide legal, tax or accounting advice. Any statement contained in this communication concerning U.S. tax matters is not intended or written to be used, and cannot be used, for the purpose of avoiding penalties imposed on the relevant taxpayer. Clients should obtain their own independent tax advice based on their particular circumstances.

This material is provided for educational purposes only and should not be construed as investment advice or an offer or solicitation to buy or sell securities.

This presentation is for general information purposes only. It does not take into account the particular investment objectives, restrictions, tax and financial situation or other needs of any specific client.