Quick answer: A Special Enrollment Period (SEP) lets you sign up for or change a Marketplace health plan outside Open Enrollment, which runs November 1, 2026 to January 15, 2027 for 2027 coverage. You usually qualify after a life event like losing health coverage, moving, getting married, or having a baby, and you typically have 60 days to enroll (HealthCare.gov). Voluntarily dropping coverage, including COBRA, doesn’t count. If you don’t qualify, private medically underwritten plans can be bought any time of year.
Who this is for
- Arizonans who just lost job-based coverage, including people deciding between COBRA and the Marketplace
- People who moved to Arizona or moved to a new county within the state
- Newlyweds and new parents
- Anyone losing AHCCCS (Arizona Medicaid) or aging off a parent’s plan at 26
- Self-employed people wondering whether they have to wait until November
Why this matters outside Open Enrollment
Life doesn’t wait for November. Layoffs, moves, marriages, and new babies happen all year, and a coverage gap of even a few weeks can leave you exposed to a large medical bill. The Special Enrollment Period exists so these changes don’t leave you uninsured until the next Open Enrollment.
The catch is that the rules are specific, the windows are short, and some situations that feel like they should qualify don’t. Knowing where you stand before your window closes is the difference between enrolling now and waiting months.
Life events that can qualify you
Changes in your household
- Getting married
- Having a baby, adopting a child, or placing a child for foster care
- Getting divorced or legally separated and losing health coverage
- Death of someone on your Marketplace plan that causes you to lose coverage
Changes in where you live
- Moving to a new ZIP code or county (for example, from Tucson to Phoenix or from out of state to Scottsdale)
- Moving to the U.S. from a foreign country or U.S. territory
- Moving to or from the place you attend school, or where you live and work as a seasonal worker
- Moving to or from a shelter or transitional housing
Losing health coverage
- Losing job-based coverage, including when COBRA runs out
- Losing individual coverage, such as when a plan is discontinued or you move out of its service area
- Losing AHCCCS (Medicaid) or KidsCare/CHIP eligibility
- Turning 26 and aging off a parent’s plan
- Losing coverage through a family member, such as after a divorce or a family member’s job loss
Other qualifying situations
- Being offered an ICHRA or a QSEHRA by an employer
- Becoming a U.S. citizen
- Leaving incarceration
- Gaining membership in a federally recognized tribe
- Starting or ending AmeriCorps service
- Being affected by a natural disaster or other uncontrollable event
For the full list, see HealthCare.gov’s Special Enrollment Period page or use its eligibility screener.
What doesn’t qualify
- Voluntarily dropping COBRA or choosing to stop paying the premiums
- Losing coverage because you didn’t pay your premiums
- Divorce or legal separation without losing coverage
- Moving only for medical treatment or staying somewhere on vacation
- Choosing to drop dependent coverage, unless your household income dropped or the change made your dependent eligible for Marketplace savings
- Losing only Medicare Part B or Part D
If you’re on COBRA, the details matter. We cover your options in what to do before COBRA expires.
Special Enrollment Period windows and start dates
| Life event | How long you have | When coverage can start |
|---|---|---|
| Losing health coverage | 60 days before or 60 days after the loss | Generally the first of the month after you pick a plan |
| Losing AHCCCS or KidsCare (CHIP) | Up to 90 days after the loss | Generally the first of the month after you pick a plan |
| Getting married | 60 days after the marriage | The first of the month after you pick a plan |
| Birth, adoption, or foster placement | 60 days after the event | The day of the event |
| Moving to a new ZIP code or county | 60 days after the move (requires qualifying coverage for at least 1 day in the 60 days before the move, with some exceptions) | Generally the first of the month after you pick a plan |
Timing rules can vary by situation, so confirm your exact window with CMS’s guide to Special Enrollment Periods or a licensed agent before you count on a start date.
How to enroll with a Special Enrollment Period in Arizona
- Confirm your event qualifies. Use the HealthCare.gov screener or ask a licensed agent.
- Apply on HealthCare.gov. Arizona uses the federal Marketplace, so you apply there or through a licensed agent who can enroll you.
- Pick a plan quickly. Your start date usually depends on when you select a plan, so don’t wait until day 59.
- Send documents if asked. HealthCare.gov may ask you to confirm your Special Enrollment Period with documents such as a letter showing your coverage end date.
- Pay your first premium. Your coverage isn’t active until the first payment is made.
If you don’t qualify: your year-round option
Not everyone has a qualifying life event when they need coverage. Freelancers between contracts, people who missed Open Enrollment, and anyone who simply wants better coverage mid-year often fall into this gap. We explain why in our guide for gig and contract workers.
Private medically underwritten plans can be bought any month without an SEP. They ask health questions and may exclude pre-existing conditions, they don’t come with subsidies, and they aren’t HSA-eligible. For healthy people without a qualifying event, they can bridge the gap until the next Open Enrollment or serve as primary coverage.
Real-world scenarios
A Chandler engineer laid off in March
His employer coverage ends March 31 and he’s offered COBRA. Because he’s losing job-based coverage, he has a Special Enrollment Period. He compares COBRA with Marketplace plans, finds that his lower income for the year qualifies him for a premium tax credit, and picks a Marketplace Silver plan before his coverage ends so there’s no gap.
A couple moving from California to Gilbert
They had coverage in California up to the move, so they qualify for a Special Enrollment Period in Arizona. They have 60 days after the move to choose a plan, and they check that their new Valley doctors are in network before enrolling.
A Phoenix freelancer with no life event in July
She dropped her old plan earlier in the year and now wants coverage. Dropping a plan voluntarily doesn’t qualify her, so the Marketplace isn’t available until Open Enrollment. She’s healthy, so she applies for a private plan that starts August 1 and plans to compare Marketplace options again in November.
Frequently asked questions
What is a Special Enrollment Period?
A Special Enrollment Period is a window outside Open Enrollment when you can sign up for or change a Marketplace health plan because of a qualifying life event, such as losing coverage, moving, getting married, or having a baby.
How long does a Special Enrollment Period last?
Usually 60 days from the qualifying event. For a loss of coverage, you can also apply up to 60 days before the coverage ends. If you lost Medicaid (AHCCCS in Arizona) or CHIP, you may have up to 90 days.
Does losing my job qualify me for a Special Enrollment Period?
Losing job-based health coverage qualifies you, and you can choose a Marketplace plan instead of COBRA. Losing the job itself doesn’t qualify you if you didn’t have health coverage through it.
If I drop COBRA, can I enroll in a Marketplace plan?
Not if you drop it voluntarily or stop paying the premiums. You qualify when COBRA runs out or ends involuntarily, like if your former employer stops offering coverage.
Does moving to Arizona qualify me for a Special Enrollment Period?
Usually, if you move to a new ZIP code or county and had qualifying health coverage for at least one day in the 60 days before the move. Moving from another country or U.S. territory can also qualify.
When does coverage start with a Special Enrollment Period?
It depends on the event. After a birth or adoption, coverage can start on the day of the event. After a marriage, coverage can start the first of the month after you pick a plan. For most other events, coverage generally starts the first of the month after you select a plan.
Do I need to send documents to prove my qualifying life event?
You may. HealthCare.gov can ask for documents, such as a letter showing the date your coverage ended. If you don’t send acceptable documents, you may lose the Special Enrollment Period.
What if I don’t qualify for a Special Enrollment Period?
You can wait for Open Enrollment (November 1 to January 15), or apply for a private medically underwritten plan, which you can buy any month. Private plans require health questions, may exclude pre-existing conditions, and aren’t HSA-eligible.
Had a life change? Let’s check your window before it closes.
I’ll confirm whether you qualify for a Special Enrollment Period, compare Marketplace plans with any subsidy you qualify for, and show private options if you don’t have a qualifying event. Free, no obligation.
Derek Greenlee, Greenlee Health Insurance
8687 East Vía de Ventura #210, Scottsdale, AZ 85258
Phone: 480-375-1652
Email: derek@greenleehealthinsurance.com
Website: greenleehealthinsurance.com
Related reading
- Gig to Gig: Why Waiting for Open Enrollment Doesn’t Work When Your Income (and Location) Keep Changing
- Retired Before 65 and Overpaying on COBRA? Here’s What to Do Before It Expires
- HMO vs PPO vs EPO: Which Health Plan Type Fits Self-Employed Arizonans in 2027?
- 2027 Health Insurance Rate Increases by State: How Much Premiums Are Rising and What to Do
Sources
- HealthCare.gov — Special enrollment opportunities
- HealthCare.gov — Special Enrollment Period (glossary)
- HealthCare.gov — Send documents to confirm a Special Enrollment Period
- HealthCare.gov — COBRA coverage and the Marketplace
- CMS — Understanding Special Enrollment Periods
- HealthInsurance.org — Special enrollment guide