Key Takeaways

• The 31 day coverage extension provides a crucial safety net during the transition from FEHB to PSHB for USPS employees.
• Understanding enrollment deadlines and Medicare coordination will help you maximize your benefits without gaps.

If you’re a USPS employee or retiree navigating the new Postal Service Health Benefits (PSHB) program, you may have questions about what happens to your coverage if you decline Medicare Part B. This guide breaks down the 31 day coverage extension, explains the FEHB to PSHB transition, and helps you understand the next steps to protect your health coverage.

What Is the 31 Day Coverage Extension?

OPM’s purpose for extension

The U.S. Office of Personnel Management (OPM) created the 31 day coverage extension as a safety buffer. When your enrollment in the Federal Employees Health Benefits (FEHB) program ends, this extension gives you an extra 31 days of free coverage with the same benefits. The main goal is to ensure that no one loses access to health care due to an administrative transition or delay, especially during major plan changes.

How the rule applies to USPS employees

For USPS employees and retirees, the 31 day extension acts as a bridge between FEHB and the new Postal Service Health Benefits (PSHB) program. If your FEHB plan ends as you move to a PSHB plan, the extension kicks in automatically—no paperwork required. During this period, you maintain your existing coverage and have time to review your PSHB options and enroll without facing a gap in benefits.

How Did PSHB Replace FEHB in 2025?

Transition timeline and milestones

The transition to PSHB was completed in 2025. Here’s how it unfolded:

• 2023-2024: OPM notified USPS employees and annuitants about the upcoming change and released FAQs and resources.
• Fall 2024: OPM held a Special Enrollment Period for USPS staff and retirees, allowing them to select their PSHB plan.
• January 1, 2025: FEHB coverage for eligible USPS participants ended. PSHB coverage began seamlessly for those who enrolled.

Impact on current and retired USPS staff

If you were an active USPS employee or annuitant, you were required to choose a PSHB plan. The transition did not affect the health insurance of other federal employees not connected with USPS. For USPS retirees, the move also involved reviewing Medicare coordination requirements, as PSHB and Medicare must work together to provide full coverage.

What Happens After Your FEHB Ends?

Temporary coverage details

Once your FEHB coverage ends, the 31 day extension begins automatically. This temporary coverage mirrors your previous plan—same benefits, providers, and cost-sharing—so you don’t lose access to care while switching to PSHB or evaluating next steps for Medicare.

During this 31 day period, you’re covered in the same way as before. There’s no need to pay extra for these 31 days, but be aware that if you fail to enroll in PSHB within this window, your health coverage will lapse at the end of the extension.

Coordination with new PSHB plans

You’re eligible to enroll in a PSHB plan either before your FEHB ends or during this extension. Enrolling promptly ensures your new PSHB coverage starts as soon as your FEHB (and its extension) concludes. This approach minimizes any administrative hiccups and helps you avoid unexpected medical costs.

How Does the 31 Day Extension Work?

Eligibility requirements

All USPS employees and annuitants transitioning from FEHB to PSHB are eligible for the 31 day coverage extension when their FEHB ends. The extension also applies if your coverage ends for other allowable reasons, such as retirement or resignation, though PSHB transition is the main trigger in this context.

How to avoid gaps in coverage

Mark the date your FEHB ends and use the 31 day extension window wisely. Double-check your PSHB enrollment status during this period and promptly complete any additional forms requested by OPM or your new insurer. If you’re planning to add Medicare coverage, coordinate your enrollment to avoid service gaps, especially if your medical providers require both PSHB and Medicare.

Do I Need Medicare With PSHB Coverage?

Understanding Medicare rules for federal retirees

PSHB is designed to work side-by-side with Medicare. Most USPS retirees who are Medicare-eligible are required to enroll in Medicare Part B to receive full PSHB benefits. However, participation in Medicare is not automatic, and you must actively enroll during the available periods to avoid possible late enrollment penalties.

Deciding whether to enroll in Part B

You have the choice to decline Medicare Part B, but this decision can impact your overall out-of-pocket costs and provider access. Some PSHB plans require that you enroll in both PSHB and Medicare Part B for the most comprehensive coverage. Since each retiree’s situation is unique, be sure to consider how your premiums, cost-sharing, and network access might change if you do not enroll in Part B. If you need personalized guidance, consult with a benefits expert or use OPM’s published decision tools—the aim is to help you make an informed, stress-free choice.

What Are the Key Enrollment Deadlines?

Transition checklist for USPS employees

To ensure a smooth transition, track these key steps:

• Watch for mail or email notifications from OPM with your specific coverage ending dates.
• Confirm your FEHB termination date and the start of your 31 day extension.
• Review all PSHB plan options before the end of your extension.
• Complete and submit your PSHB enrollment within the specified OPM window.
• If Medicare eligible, coordinate your enrollment dates to avoid penalties or coverage gaps.

PSHB and Medicare timelines explained

PSHB open enrollment and Medicare Initial Enrollment Periods are coordinated but not identical. Typically, your window to enroll in PSHB will close 31 days after FEHB ends. Medicare enrollment is guided by federal rules; most retirees become eligible at age 65. Missing these deadlines can have lasting effects, so write key dates on your calendar and check in with OPM or a qualified benefits counselor if you’re unsure.

Is My Doctor Covered During the Transition?

Doctor network changes from FEHB to PSHB

While many PSHB plans try to mirror FEHB provider networks, some changes may occur. Your doctor’s participation could shift depending on the PSHB plan you select, and on whether you are enrolled in Medicare Part B. During open enrollment, review the PSHB provider directories or contact your doctor’s office to confirm their continued participation.

How to check provider participation

Before confirming your PSHB or Medicare selection, use the official online provider lookup tools or call the member services numbers listed by each plan. Double-check your preferred doctors and specialists by name and location. This proactive step reduces surprises and ensures your doctor is in-network when your new coverage starts.

Common Questions About PSHB Coverage

Forms needed for the transition

Switching from FEHB to PSHB doesn’t usually require extensive paperwork. Most steps are electronic or completed online. However, you may need to review and sign a confirmation letter or submit proof of Medicare enrollment if you have it. Keep all communications from OPM, as these will include forms, checklists, and instructions for smooth processing.

Who to contact for assistance

For help or clarification, start with OPM’s website or the official PSHB resources. OPM’s customer service team is equipped to answer questions, guide you through deadlines, and help with documentation. If you’re retired, you may also contact your annuitant services center for extra support. Staying proactive and asking questions can make the entire process less stressful and more straightforward.