To cancel Cigna insurance, contact the entity that enrolled you: the Health Insurance Marketplace for plans bought through Healthcare.gov or a state exchange, your employer’s HR department for job-based coverage, Medicare for a Cigna Medicare Advantage plan, or Cigna directly for an individual policy you purchased from the company. Using the wrong channel is where most cancellations go wrong, leaving people with charges they didn’t expect or a tax bill for subsidies that kept flowing after they thought they were done. Cigna’s general customer service line is 1-800-997-1654, but that number alone won’t end every kind of plan.
Marketplace Plans
If you enrolled through Healthcare.gov or a state exchange, cancel inside your Marketplace account. Log in, go to your current plan, and follow the steps to end coverage. The Marketplace processes the termination and notifies Cigna for you.
Skipping this step and calling only Cigna is the classic mistake. The Marketplace may keep issuing advance premium tax credits in your name, and you’ll owe those back when you file. Termination usually takes effect on the last day of the month you submit the request, though you can pick a future date.
Employer-Sponsored Plans
Job-based Cigna coverage runs through your employer’s HR or benefits department. Cigna will not process a termination directly from an employee on a group plan. Contact your benefits administrator, complete any required waiver or cancellation form, and ask for written confirmation of your end date.
Most employer plans use pre-tax payroll deductions under IRS Section 125 cafeteria plan rules, which limit when you can drop coverage. Outside of annual open enrollment, you generally need a qualifying life event: marriage, a new child, loss of other coverage, or a move to an area with different plan options. Without one of those, you’re likely waiting for the next open enrollment window.
Individual Plans Bought Directly From Cigna
If you bought your plan straight from Cigna, cancel with written notice. Cigna’s state policy disclosures indicate that in most states, cancellation takes effect on the first of the month after Cigna receives your notice. Cigna Global plans require at least 14 days’ written notice and a minimum coverage period of three months from the start date before you can cancel.
Your notice should include your full name, policy number, and the date you want coverage to end. You can mail it to Cigna’s individual plans address at 11095 Viking Drive, Suite 350, Eden Prairie, MN 55344, or call 1-800-997-1654 to confirm the correct submission method for your specific plan.
Medicare Advantage Plans
Cigna Medicare Advantage plans follow federal disenrollment rules. You can make changes during the Annual Open Enrollment Period from October 15 through December 7, with new coverage starting January 1. If you’re already in a Medicare Advantage plan, the Medicare Advantage Open Enrollment Period from January 1 through March 31 lets you switch plans or return to Original Medicare. Outside those windows you need a Special Enrollment Period, triggered by circumstances like moving, losing other coverage, or qualifying for Medicaid.
To disenroll, contact Medicare at 1-800-MEDICARE or use your Medicare.gov account. You can also contact Cigna’s Medicare team, but Medicare is the authoritative channel for confirming that you’re out.
What to Put in Writing and How to Send It
For a straightforward individual cancellation, Cigna needs your name, policy number, and requested end date in writing. Some plans have a specific cancellation form, available by calling customer service or checking your myCigna account.
A few situations call for extra paperwork. If you’re dropping employer coverage mid-year on a qualifying life event, your benefits administrator may want documentation such as a marriage certificate, a lease showing a new address, or a letter confirming other coverage. Some employer and Medicare-related plans require proof of replacement coverage before processing a mid-term cancellation; a letter from the new insurer or a copy of the new insurance card usually satisfies this.
Send everything through a method that creates a paper trail. Certified mail with return receipt, a fax with confirmation, or email with read receipt all work. If there’s ever a dispute about when you canceled, that record is your protection.
When Coverage Actually Ends and What You Still Owe
For individual Cigna plans, cancellation takes effect on the first of the month after Cigna receives your written notice. If Cigna gets your request on March 10, your coverage runs through March 31 and ends April 1. You owe the full March premium regardless of the request date. Plans don’t typically prorate a partial month.
Outstanding claims may need to settle before your account closes out. Deductible amounts, copays, and coinsurance you still owe can show up on a final statement weeks after coverage ends. Review any explanation of benefits documents that arrive after cancellation and compare them to your own records.
Don’t Cancel by Not Paying
Letting the premium lapse eventually ends coverage, but the path is messy. On a Marketplace plan with advance premium tax credits, federal rules give a three-month grace period after a missed payment if you’ve already paid at least one full month’s premium that year. During month one, claims are paid normally. In months two and three, the insurer may hold or deny claims. If you still haven’t paid by the end of month three, coverage terminates retroactively to the last day of month one, and any care you received in months two and three becomes entirely your bill.
Plans without subsidies get shorter grace periods set by state law, often just 30 days. A formal cancellation request gives you a clean documented end date and protects you from retroactive billing surprises.
Tax Reconciliation for Marketplace Subsidies
Canceling a Marketplace plan mid-year triggers a tax reconciliation that catches many people off guard. If you received advance premium tax credits, you reconcile them on IRS Form 8962 when you file. The Marketplace sends Form 1095-A showing monthly premiums and credit amounts for every month of enrollment.
Starting with tax year 2026, there is no repayment cap on excess advance premium tax credits. In earlier years, repayment was limited based on income. That cap is gone. If credits were paid for months you were no longer eligible, or your income came in higher than projected, you owe back the full excess, added directly to your tax liability.
The way to avoid this is to report your cancellation to the Marketplace promptly with the correct end date. If other household members are staying on the plan, update the application to remove only you while keeping the remaining enrollees’ information accurate, since premium tax credits are calculated on total household income. Filing Form 8962 is mandatory when advance credits were paid, even if you otherwise wouldn’t need to file a return. Skipping it forfeits any credit you were entitled to and can block advance credit payments in future years.
COBRA When You’re Leaving an Employer Plan
If you’re losing employer-sponsored Cigna coverage, you may be eligible for COBRA continuation, which lets you keep the same group plan by paying the full premium yourself plus a 2% administrative fee. It’s most useful when you’re between jobs or waiting for a new employer plan to start.
COBRA runs up to 18 months when the qualifying event is job loss or a reduction in hours. For other qualifying events affecting a spouse or dependent, such as the employee’s death, divorce, or a dependent child aging out, coverage can continue up to 36 months.
You have 60 days to elect COBRA, counted from the later of the date you would lose coverage or the date you receive your election notice. Coverage is retroactive to the qualifying event, so a mid-window election still fills the gap. If a medical emergency happens inside that 60-day window, you can elect COBRA after the fact and have the care covered.
Confirming the Cancellation
Get confirmation in writing. Cigna should send a notice with the exact end date. For Marketplace plans, your Healthcare.gov account will reflect the termination. For employer plans, HR should provide written confirmation. If nothing arrives within two weeks, follow up. Untangling an extra month of billing after the fact is harder than preventing it.
Keep copies of every document, confirmation number, and email. Watch your bank or credit card statements for charges after your expected end date. If you’re moving to new coverage, check that its start date lines up with your Cigna end date. Even a one-day gap matters if you need care. If your new employer plan has a waiting period, COBRA can bridge it, but only if you elect within the 60-day window.