You Switched FEHB Plans in Open Season, Retired, and OPM Still Shows the Old Plan

Three OPM rules, stacked, and the form falls between them.

1. Open Season changes take effect January 1. Always. OPM’s own sentence:

Not the day you file it, not the day you retire. January 1.

2. If you retire before January, your agency can’t apply it, so it travels with your retirement papers. OPM’s rulebook for the people who process this, the FEHB Handbook:

3. OPM records the plan you had on your last day, on purpose. Same Handbook:

That’s why “OPM still has me in my old plan” is half right. From your retirement date through December 31, the old plan really was your plan of record. The error isn’t that OPM logged it.

The error is that the January switch never got posted on top of it.

OPM knows this seam. In October 2024 it rewrote the process for agencies, in a Benefits Administration Letter, because under the old way packages arrived late or incomplete and, in OPM’s words:

What OPM now tells agencies to do with a retiring employee’s Open Season switch:

• Paper only. “Retiring employees who want to make an FEHB Open Season election that will be effective after their retirement date will need to complete a paper SF 2809.” Not Employee Express, not myPay, not the agency’s online enrollment system. OPM says this conversation belongs in your retirement counseling session.
• HR certifies it. The agency writes your retirement date in Remarks, notes that coverage transfers in under OPM’s payroll office number, enters the date it received your completed form, and the effective date.
• HR sends it to both plans. “[I]f a retiring employee is changing health insurance Carriers … then the FEHB Open Season SF 2809 will need to be sent to both the old Carrier … and the new Carrier.” By email or fax.
• It goes on top of your package, under a cover sheet, “to flag that an Open Season election is in the package and the enrollment change needs to be processed by OPM.”
• OPM posts it. Your payroll office’s final records “will reflect the old FEHB enrollment code.” OPM says it flags these cases “for expedited processing to ensure the new FEHB enrollment code is processed within the OPM system,” and in the same letter says expedited still means the full adjudication process, so “delays may occur.”

Now read the August case again. The welcome package and cards arrived in December, so the new plan had the form, most likely from the agency, which is the route OPM now tells agencies to use.

The payroll file OPM received showed the old plan, by design. The one step left was OPM posting the new code, and it didn’t happen.

Eight months later the new plan, with no enrollment from OPM behind the cards it issued, cancelled.

That’s the whole failure, and it’s narrower than it looks: the form can be on time, certified, and in both carriers’ hands, and the switch still doesn’t exist until OPM’s record says so.

One catch: the letter is what OPM tells agencies to do, not proof your agency did it. If you retired before October 2024, your form went the old way, sent to OPM with your retirement papers. Either way, the check and the fix below are the same.

Two moments, and the second one matters more than it looks.

You don’t cancel the old plan yourself.

OPM’s rule: when an Open Season change goes through, “your agency or retirement system will automatically cancel your enrollment in your former health plan at the time your enrollment in your new health plan becomes effective,” and you won’t be charged premiums for both.

Interim payments carry no insurance deductions. For me, every interim month ran with no premium taken out, and the missed FEHB premiums came out at once when my case finalized in May.

Until that month, my statement said nothing about health insurance at all. If I’d switched plans in Open Season, the statement couldn’t have told me whether OPM posted it.

If it’s past January and the carrier or Services Online shows the old plan, don’t wait for a bill to settle it. Skip to the fix.

Yes. This is the question the retirement groups can’t settle, and OPM’s rules settle it.

The line you’ll see in the groups: “As long as you aren’t on interim status, you can participate in open season.” Said as fact, and it isn’t in OPM’s rules anywhere.

The FEHB Handbook’s chapter for annuitants doesn’t contain the word “interim” at all. What it says is this:

Being an enrolled annuitant is the whole test. Your coverage continued from your last day. You’re enrolled.

Interim pay is how OPM is paying you while it finishes your case, not a status your health plan can see.

Three things to know:

• If you already filed the switch with your agency before you left, you don’t file it again. It’s in your package. Your job is to confirm OPM posted it (the check above).
• The real catch is access, not eligibility. OPM’s Open Season Online portal for annuitants opens in early November and requires a Login.gov account tied to your claim. With a claim number, OPM’s phone line also lists “changing your enrollment during the annual Health Benefits Open Season” among the changes it can make by phone. Get the name of who took it and the date. No claim number yet? Then you can’t register, and OPM’s phone line asks for your claim number too, so your channel is paper: an SF 2809 goes to the Office of Personnel Management, Open Season Processing Center, P.O. Box 5000, Lawrence, KS 66046-0500, postmarked no later than December 14. OPM’s Open Season Express line is 1-800-332-9798.
• Whichever channel, the change lands January 1.

Every corrected case on that thread was corrected retroactively. Here’s the order, built from their cases and OPM’s rules, and the two places it goes wrong.

1. Call OPM and ask for a customer inquiry on your FEHB enrollment. 1-888-767-6738, weekdays 7:40 a.m. to 5:00 p.m. Eastern. Getting through has its own page. One retiree reports the rep can open a “customer inquiry” that routes the problem to the right desk. Ask for it by name. Have the CSA number and the new plan’s enrollment code in front of you.
2. Send the evidence packet. A retiree on the thread, told by OPM what to send: your SF 2809 copy, the new carrier’s welcome letter, the old carrier’s cancellation letter if there is one, copies of both ID cards, and a cover letter that states the error and the date the change should carry (January 1). Add HR’s date-received if you have it.
3. If OPM says it has nothing, get the enrollment history from your old agency. Your agency’s benefits office holds the enrollment forms for your file and can produce them. One retiree in r/FedEmployeeRetirement, September 2026: his old agency gave him “the FEHB benefit history forms for my wife and I, we filed the reconsideration appeal and got it restored.”
4. If OPM refuses, ask for reconsideration. OPM’s own rules provide for restoring a wrongly ended enrollment back to the date it ended, and for sending a refusal back for reconsideration.
5. If nothing moves, the congressional route. Two of the cases on the thread moved only after a House or Senate office asked. How that works, and what it can and can’t do, is on the OPM-not-responding page.

Once OPM corrects the record, the premiums adjust retroactively. Retirees report the two carriers can then settle between themselves anything the old plan paid, and your providers may need to refile. Tell all of them what happened.

One report, no plan change involved: a retiree in a retirement group, September 2026, retired December 31, got the finalized-annuity notice in August, and “at that date they erroneously dropped our medical coverage,” three and a half weeks to get it reinstated.

I don’t know the mechanism, but finalization is the month premiums start coming out, so if your first full payment arrives and your carrier goes quiet, run the same check, then the same fix.

You have the option, and OPM’s rules say so. The process is where it breaks, and this page is the record of how.

Here’s where I land. If you’re retiring before January and you don’t have to switch this year, the simpler path is to carry your current plan into retirement and change it next Open Season, as a finalized annuitant.

That change goes to OPM directly, through Open Season Online, the Express line, or paper to Lawrence. The agency-to-OPM seam on this page doesn’t exist on that path.

If you do switch now, you watch it. That means the four HR asks before you leave, the January check with the new plan first, and the date on the correction letter if one comes.

Plenty of people will want to compare anyway. OPM’s own Open Season highlights put the overall average FEHB premium increase for 2027 at 9.3%, and the average enrollee’s share up 10.9%.

OPM posts the rate charts for every plan on opm.gov.

Three things OPM’s rules say about when you can change plans:

• Retiring is not a chance to change plans. OPM’s sentence: “You cannot change to another plan simply because you retired.” An annuitant changes plans at Open Season. Outside Open Season, only what OPM calls a qualifying life event lets you change your enrollment, such as a marriage, a new child, or a move out of your HMO’s area.
• This year’s Open Season runs November 9 through December 14, 2026. Those dates are set.
• If you retire before January, the change takes effect January 1, whichever way you file it.

So if you’re retiring in October, November, or December and you do want a different plan for the new year, this is what to expect:

1. You hand HR a paper SF 2809 before you leave, even if that’s before Open Season opens.
2. HR certifies it and sends it to your new plan, and your old one if you’re changing carriers.
3. It rides to OPM on top of your package.
4. In January, you confirm OPM posted it, with the new plan first.

Keep the copy. Note the date. Check with the new plan first.