Imagine opening a letter in January and learning your health plan has a new name, a new network, and a new formulary. You never chose any of it. Nobody asked you. That is exactly what happens to a lot of people this year if they ignore the notice from a carrier that is leaving the ACA marketplace.
I’m Craig, and I want to walk you through what is actually going on, because this one has a hard deadline and a quiet default that can cost real money.
Nine carriers are leaving, and Cigna is the biggest
As of mid-September, KFF’s tracker showed nine carriers leaving ACA marketplaces for plan year 2027, either entirely or in certain states. Cigna is pulling out of all eleven states where it sold marketplace plans, which touches roughly 369,000 people. Baylor Scott and White is leaving Texas. CareSource is leaving Indiana, Ohio, and West Virginia. PacificSource is leaving Idaho, Montana, and Oregon. ConnectiCare is ending its Connecticut marketplace plans.
Add those five together and you are well past 600,000 people who will wake up on January 1 without the plan they had in 2026. Their old plans simply end on December 31.
Carriers leave for the usual business reasons: costs run higher than premiums, the rules keep shifting, and the math stops working in certain markets. I’m not here to second-guess any company’s decision. My job is to point out what it means for you. Whatever the reason, the result is the same. Your plan is ending, and you are the one who has to act.
What happens if you do nothing
This is the part most people miss. If your plan is going away and you don’t pick a new one, the marketplace can assign you a replacement. In general, that replacement is the lowest-cost plan at your current metal tier from a carrier that is staying.
Lowest cost sounds fine until you look at what it leaves out. The assigned plan may not include your doctor. It may not cover your prescriptions the way your old plan did. It may have a smaller network or a different deductible structure. You will find out when you try to use it, which is the worst possible time.
There is a second catch. Even if the new plan is similar on paper, a different carrier means a different set of rules. Prior authorization may work differently. The pharmacy network may be different. The place where you pay your deductible may reset. Any amount you already paid toward your 2026 deductible and out-of-pocket maximum does not follow you to a new carrier.
The calendar is shorter this year
Open enrollment for 2027 starts November 1. In HealthCare.gov states, the window to pick a plan for January 1 coverage closes December 15. The old January 15 deadline that gave you a February start is gone in those states. State-run exchanges set their own dates, within limits, and some will run later into December.
So a shorter window and a forced move land on the same people at the same time. My advice is to treat the middle of November as your real deadline. That leaves you room to compare, ask questions, and fix a mistake before the clock runs out.
A real example: Renee in Chattanooga
Renee is a self-employed graphic designer in Chattanooga, Tennessee. Her husband works part time. They have had the same marketplace plan for three years. Her endocrinologist is in network, and her two prescriptions are on the formulary at a tier she can live with.
In October she got a notice that her carrier is leaving the marketplace. She read the first two lines, figured she would deal with it later, and set it on the counter under a pile of mail.
If Renee had stayed in that pile of mail through December 15, the marketplace could have moved her into the cheapest same-tier plan from another carrier. Her endocrinologist might not have been in that network. One of her prescriptions might have landed on a higher tier. She would have discovered both at the pharmacy counter and the front desk in January.
Instead, she called us in the first week of November. We pulled up the plans from carriers that are staying, such as Aetna, UnitedHealthcare, and BlueCross BlueShield where available in her area, and checked each one against her doctor and her two prescriptions. She picked a plan on purpose, and her endocrinologist came with her.
That story ends well because she moved early. The same notice, ignored, ends differently. And Renee is not unusual. Most people I talk to say the same thing: the letter looked like junk mail, or they assumed it was handled automatically. It is handled automatically, which is the whole problem.
What to do this week
- Find the notice from your carrier. It usually arrives by mail or email in the fall. If you can’t find it, call the number on your member card and ask whether your plan is continuing for 2027.
- Write down your doctors, your specialists, and every prescription you take. This is the list every new plan has to be checked against.
- Update your 2027 income estimate. Subsidies are based on projected income, and the rules around repaying excess subsidy changed, so a guess made in a hurry can cost you at tax time.
- Shop on or after November 1, and choose a plan yourself. Do not wait for the default to choose for you.
- If you already have a plan that is staying, still review it. Premiums, networks, and out-of-pocket limits change every year, and auto-renew is not the same as a good fit.
Why this matters beyond the premium
People shop on monthly price, and I understand why. But the premium is only one line of the real cost. A plan that drops your doctor, moves your medication to a higher tier, or sends you out of network for the specialist you see every quarter can cost you far more than the few dollars you saved by letting the system pick.
The other thing I tell people is that nothing about this is a crisis if you act early. The people who get burned are the ones who wait until December and have two weeks to fix a problem that needed two hours in November.
One more tip. When you compare plans, don’t stop at the carrier name. Two plans from the same company can have different networks. Check the specific plan, not just the logo on the card.
What This Means for You
If your carrier is leaving the marketplace, you have a choice to make, and you only get to make it once a year. The default exists as a safety net, not as a recommendation. Pick a plan yourself, check your doctors and prescriptions against it, and do it before the middle of November.
If you’re not sure whether your carrier is one of the nine, or you’re not sure what to compare, that is exactly what a healthcare review is for. We work for you, not the carriers, and we are carrier-independent, so the only thing we care about is the plan that fits you.
Want a real conversation about this? Book a Healthcare Review. One hour, free, plain English.
