
Open enrollment is an annual period during which individuals can make changes to their health insurance coverage or enroll in a new plan. This typically occurs in the fall, usually lasting a few weeks from November 1 to December 15 or January 16/15, with coverage beginning on January 1 of the following year. It is the only time when most people can switch or obtain health insurance, except in the case of qualifying life events, such as income changes or life milestones. Certain programs, like Medicaid and the Children's Health Insurance Program (CHIP), do not have annual enrollment periods and allow enrollment at any time.
| Characteristics | Values |
|---|---|
| Open Enrollment Period | Once a year, typically in the fall |
| Open Enrollment Window | A few weeks to a few months |
| Open Enrollment Start Date | November 1 |
| Open Enrollment End Date | January 15 or January 16 or January 31 |
| Annual Enrollment Period (AEP) | October 15 to December 7 |
| Initial Enrollment Period (IEP) | Around age 65 |
| Special Enrollment Period | Outside of Open Enrollment, due to a life event or income change |
| Medicaid and CHIP Enrollment | Anytime if eligible |
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What You'll Learn

Open enrollment periods for Medicare
Open enrollment periods are annual windows of time that allow individuals to sign up for health insurance, adjust their current plans, or cancel their plans. Medicare, a federal health insurance program, has several enrollment periods that individuals should be aware of to ensure they are appropriately covered.
The Annual Enrollment Period (AEP) for Medicare occurs every year from October 15 to December 7. During this time, individuals with Medicare can change their health plans and prescription drug coverage for the following year. It is important for people with Medicare to review the materials sent by their plans, such as the "Evidence of Coverage" (EOC) and "Annual Notice of Change" (ANOC), to ensure their plans meet their needs for the upcoming year. If individuals are satisfied with their current plans and they are still being offered, no action is needed, and their current plan will automatically renew.
The Initial Enrollment Period (IEP) for Medicare is a seven-month period that begins three months before an individual turns 65 and ends three months after their 65th birthday. This period is crucial for individuals to enroll in Medicare without incurring late enrollment penalties. If individuals miss their IEP, they may have to wait to sign up and pay a monthly late enrollment penalty for as long as they have Part B coverage.
In addition to the AEP and IEP, there are other enrollment periods for Medicare that individuals may utilize. The General Enrollment Period occurs between January 1 and March 31 each year. This period is for individuals who missed their IEP or Special Enrollment Period (SEP) and want to enroll in Medicare Parts A and B. Those who enroll during this period may have to pay a monthly late enrollment penalty.
The Special Enrollment Period is a limited-time opportunity for individuals to enroll in or make changes to their Medicare plans outside of the regular enrollment periods due to specific circumstances, such as qualifying life events. For example, individuals who qualify for a Dual Special Needs Plan (D-SNP), a type of Medicare Advantage plan, can switch to a new plan at any point during the year, even outside of open enrollment.
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Special Enrollment Periods
Open enrollment occurs once a year, typically in the fall, and is usually limited to a few weeks. For example, in most states, open enrollment for Individual & Family ACA Marketplace plans is from November 1 through January 16.
However, there are Special Enrollment Periods outside of the yearly Open Enrollment Period when you can sign up for health insurance. Special Enrollment Periods are triggered by certain life events, including losing health coverage, moving, getting married, having a baby, or adopting a child, or if your household income is below a certain amount.
For example, if you lose your health coverage, you may qualify for a Special Enrollment Period if you or anyone in your household lost qualifying health coverage in the past 60 days or expects to lose coverage in the next 60 days. If you lose health coverage through your employer or the employer of a family member, you may qualify for a Special Enrollment Period. If you lose coverage because you are no longer a dependent, you must also have a decrease in household income or a change in your previous coverage that made you eligible for savings on a Marketplace plan to qualify.
If you move, you can make changes to your Medicare Advantage and Medicare drug coverage. Your chance to switch begins when you move and continues for 2 full months after you move. If you notify your plan before you move, your chance to switch begins the month before you move and continues for 2 full months after.
If you get married, you qualify for a Special Enrollment Period if you pick a plan by the last day of the month, and your coverage can start the first day of the next month.
If you have a baby, adopt a child, or place a child for foster care, you qualify for a Special Enrollment Period.
If you are a survivor of domestic abuse, spousal abandonment, or face a serious medical condition, natural disaster, or other national or state-level emergency that kept you from enrolling on time, you may qualify for a Special Enrollment Period.
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Enrollment via the Health Insurance Marketplace
Open enrollment for health insurance typically happens annually in the fall. The Health Insurance Marketplace is a platform where individuals can enroll in health insurance plans during the open enrollment period. This period usually lasts a few weeks, from November 1 to January 16, with coverage starting on January 1 for those who enroll by December 15. Individuals can also enroll by January 15 for coverage starting on February 1.
The Health Insurance Marketplace offers a range of plans, including those with tax credits and cost-sharing reductions, to lower monthly premiums and out-of-pocket expenses. These cost-sharing reductions are known as "extra savings" and require enrollment in a Silver category plan. Individuals with qualifying life events, such as losing health coverage, moving, getting married, having a baby, or adopting a child, may be eligible for a Special Enrollment Period outside of the yearly open enrollment window. Additionally, those with household incomes below a certain threshold may also qualify for this special period.
To be eligible for enrollment in the Marketplace, individuals must reside in the United States, be U.S. citizens or nationals, or be lawfully present in the country, and not be incarcerated. When enrolling through the Marketplace, individuals pay their monthly premiums directly to the insurance company, and coverage commences only after the first premium payment has been made.
The Health Insurance Marketplace provides an opportunity for individuals to obtain health coverage, with plans catering to different needs and financial situations. It is important to stay informed about key dates and deadlines to ensure timely enrollment and avoid potential gaps in health insurance coverage.
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Enrollment via an employer
Open enrollment for medical insurance typically occurs in the fall, usually for a few weeks between November 1 and January 16. The specific dates are set by your employer. This period is when you can sign up for health insurance, adjust your current plan, or cancel your plan.
If you have employer-sponsored health insurance, your coverage options are determined by your employer. Roughly half of Americans have health coverage under an employer-sponsored plan. Eligible employees can enroll in employer-sponsored health plans when they first become eligible and annually during the open enrollment period. This period is also when you can add or remove family members from the plan, disenroll from coverage, or switch plans if your employer offers multiple options.
Special enrollment periods exist outside of the yearly open enrollment period and are triggered by specific life events, including getting married, having a baby, adopting a child, moving, or losing health coverage. These periods allow employees to make changes to their coverage that would otherwise be restricted until the annual open enrollment period. It's important to note that not all life events qualify for a special enrollment period. For example, divorce or legal separation without losing coverage does not qualify.
Additionally, if you have job-based health insurance, you may still be able to switch to a Marketplace plan. However, you will not qualify for savings or a premium tax credit on your Marketplace plan if your employer's plan is considered "affordable" and meets the minimum coverage standards.
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Enrollment for Medicaid and CHIP
Open enrollment for health insurance typically occurs in the fall, usually for a few weeks from November 1 through January 16. However, there is no open enrollment period for Medicaid and the Children's Health Insurance Program (CHIP). You can enroll anytime if you're eligible, and coverage can begin immediately.
Medicaid is a federal program that provides free or low-cost health coverage to people with limited incomes, including low-income families and children, pregnant women, the elderly, and people with disabilities. Some states have expanded their Medicaid programs to cover all adults below a certain income level. Even if your income is too high to qualify for Medicaid, you may still be eligible for cost savings on a Marketplace plan.
CHIP provides low-cost health coverage to children in families who earn too much money to qualify for Medicaid but not enough to purchase private insurance. In some states, CHIP also covers pregnant women. CHIP qualifications vary by state and are typically based on income.
To apply for Medicaid and CHIP, you can create an account with the Health Insurance Marketplace and fill out an application. If it appears that you qualify, your information will be sent to your state agency, which will contact you about enrollment. Your state may review your information annually to determine your eligibility for Medicaid and CHIP.
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Frequently asked questions
Open enrollment for medical insurance typically occurs in the fall, usually between November 1 and December 15 for plans starting in the following plan year.
A Special Enrollment Period (SEP) is a period outside of Open Enrollment when you can enroll in or change your plan due to a life event or income change.
The Annual Enrollment Period (AEP) is a key Medicare enrollment period that occurs from October 15 to December 7 every year. During this time, you can join, switch, or drop a plan.
Yes, if you missed the open enrollment deadline and do not qualify for an SEP, you may be able to apply for short-term health insurance in some states. This provides temporary coverage for a short period.
No, there is no annual open enrollment period for Medicaid and CHIP. You can apply for these programs at any time of the year if you are eligible.








































