Key Takeaways

• Health insurance deduction codes identify specific payroll withholdings for PSHB, FEHB, and Medicare on federal paystubs.
• Recent changes require Medicare-eligible retirees to recognize new codes reflecting the PSHB transition after 2025.

If you’re a federal retiree or employee reviewing your paystub, the health insurance deduction codes can seem confusing—especially given the recent transition to PSHB in 2025. Understanding what these codes mean and how they reflect your enrollment in major programs helps ensure your coverage, payroll deductions, and eligibility remain in order.

What Is a Health Insurance Deduction Code?

Definition and Role on Paystubs

A health insurance deduction code is a short series of letters or numbers that appears on your paystub, representing a specific insurance program from which funds are withheld each pay period. For federal retirees and employees, this code is your payroll’s way of showing which insurance plan premiums are being deducted, such as PSHB (Postal Service Health Benefits), FEHB (Federal Employees Health Benefits), or Medicare. These codes provide transparency, making it easier for you to see at a glance which programs you’re enrolled in and verify the accuracy of deductions.

How Codes Are Assigned

Deduction codes are assigned by payroll departments in coordination with the plan administrators—like OPM for federal health benefits and the relevant carriers responsible for each program. The codes are typically standardized so that all employees in a specific agency or sector see the same code for the same program. Updates to these codes occur when new programs roll out (as with PSHB in 2025) or if your enrollment changes.

What Does PSHB Mean on a Paystub?

PSHB Start Date and Background

PSHB stands for Postal Service Health Benefits. It is the new health insurance program exclusively for USPS workers and retirees, officially launching on January 1, 2025, in accordance with federal law. Beginning with the first payroll of 2025, deduction codes referencing PSHB began appearing on paystubs of eligible participants, replacing legacy FEHB codes for covered USPS employees and retirees.

Who Sees PSHB on Their Paystub?

If you are a current USPS employee or an eligible USPS retiree as of 2026, you will see a PSHB deduction code on your paystub. The transition affected all USPS career employees and annuitants who previously used FEHB for their health insurance. Medicare-eligible retirees, especially those aged 64-70, now see PSHB-related codes along with any applicable Medicare deductions if enrolled in both programs.

How Does FEHB Appear in Payroll Deductions?

FEHB Codes Past and Present

The Federal Employees Health Benefits (FEHB) program deduction used to appear on most federal employee and retiree paystubs under codes like “FEHB,” “FEDHI,” or program-specific abbreviations. Before 2025, these codes applied to both USPS and other federal agency employees. Since the start of the PSHB program, FEHB deduction codes now remain primarily for non-USPS federal employees and eligible annuitants.

Distinguishing FEHB from PSHB

While both programs provide federal health insurance coverage, their paystub deduction codes clearly distinguish them. If you see “FEHB” or a related abbreviation, your plan is part of the broader federal health system (non-USPS). If you see “PSHB,” you are enrolled in the postal-only program. This clear coding helps prevent confusion, especially for retirees or employees who might have switched employment sectors or eligibility categories recently.

How Is Medicare Shown on a Paystub?

Typical Medicare Deduction Codes

Medicare deductions generally appear as codes like “MEDHI” or “MEDICARE” on paystubs. These deductions reflect Social Security and Medicare payroll taxes (for current workers) or, in some specific retirement cases, indicate ongoing withheld premiums if processed through the federal payroll rather than direct payment. The deduction code confirms your contributions or premium payments toward Medicare Part A or Part B as required.

Medicare and Federal Employee Paystubs

For current federal employees, Medicare taxes are withheld and shown on every paystub. For retirees, Medicare Part B premiums can sometimes appear as deductions if you have requested OPM to withhold these premiums from your annuity. However, for most retirees, Medicare premium payments are handled directly with the Social Security Administration. It’s important to check your paystub or annuity statement to ensure the correct code appears if you have requested a direct premium withholding.

PSHB vs. FEHB vs. Medicare: Key Differences

Program Structure and Coverage

• PSHB: As of January 1, 2025, PSHB is dedicated solely to USPS employees, retiree annuitants, and eligible family members. It operates separately from FEHB, offering a standalone set of plan options.
• FEHB: Continues to serve non-USPS federal employees and retirees, with a wide range of enrolled agencies and plan options.
• Medicare: The national health insurance program for people aged 65 and over or certain younger individuals with disabilities; Medicare is not limited to federal employees but often works with PSHB or FEHB coverage in retirement.

These differences inform why specific deduction codes appear on your paystub—each code serves as a digital footprint of your active or coordinated health insurance enrollment.

Eligibility Requirements

• PSHB: Only available to USPS workers and annuitants (including certain survivors). Most Medicare-eligible USPS retirees transitioning to the PSHB program are required to enroll in Medicare Part B.
• FEHB: Available to career federal employees, retirees, and certain surviving dependents in agencies outside the USPS.
• Medicare: Eligibility generally starts at age 65 or after 24 months of Social Security disability benefits, regardless of federal or non-federal employment.

Understanding these requirements ensures your payroll deductions match your personal eligibility and that you remain in compliance with changing federal rules.

What Changed on Paystubs After 2025?

The Transition to PSHB

With the PSHB program’s launch on January 1, 2025, USPS employees and retirees saw immediate changes to paystub deduction codes. Codes transitioned from FEHB-related identifiers to new PSHB codes. For most, this was automatic, but it’s important to review your paystub after any major benefits shift to confirm the correct deduction code is listed. If PSHB replaced FEHB on your paystub, it signaled your successful migration into the new program.

Common Questions from Employees

Employees and retirees frequently asked whether deduction amounts themselves changed with the new program and if their Medicare withholding was affected. While deduction codes changed to reflect the new program, the actual amounts and eligibility depend on your individual plan choices and enrollment status. Double-checking your paystub ensures you stay informed and helps you catch any discrepancies early on.

FAQs About Insurance Codes on Paystubs

Are Deduction Codes the Same for Everyone?

Deduction codes are generally standardized by employer (e.g., USPS or other federal agencies) and by the program in which you’re enrolled. However, plan-specific codes may differ slightly within broader categories depending on local system variations or special circumstances, such as dual enrollments.

What If I Have Multiple Codes?

It’s possible to see more than one deduction code if you coordinate PSHB or FEHB coverage with Medicare, dental, or vision plans, or if you’ve recently changed enrollment. Multiple codes simply mean payroll is withholding for each eligible benefit.