Wyoming Part B Premium Reimbursement Timeline

The Gap Between Approval and the Money

Your parent gets the letter from the Wyoming Department of Health: approved for SLMB or QI. The Part B premium should stop coming out of their Social Security check now, right?

Not yet. There's a 60-to-90-day lag between the state approving Medicare Savings Program benefits and SSA actually stopping the monthly Part B deduction. During that gap, your parent keeps losing the 2026 standard premium of $202.90 per month from an already tight Social Security check. Understanding why—and what money comes back—matters.

How the Buy-In Process Works

Once WDH enters the approval into the Wyoming Eligibility System, an electronic transaction flows through the BENDEX data exchange to CMS and SSA. This transaction tells SSA that Wyoming is now responsible for the Part B premium.

SSA processes the state buy-in tape, updates its payment master records, and adjusts the monthly direct deposit or check. The federal system doesn't move quickly. Sixty to 90 days is standard, and some cases take longer when data mismatches trigger manual reviews.

What Gets Refunded

The refund depends on which program your parent was approved for:

SLMB and QI: Coverage can be retroactive to the application month and up to three calendar months before the application, provided your parent met all eligibility requirements during those months. Every Part B premium deducted from the effective MSP date forward gets refunded as a lump sum—either through direct deposit or a paper check from SSA.

QMB: Coverage is prospective only—it starts the first day of the month after WDH determines eligibility. No retroactive premium refunds. But going forward, Wyoming pays the full Part B premium plus Medicare deductibles, coinsurance, and copayments.

Tracking the Refund

Here's a realistic timeline with action items:

• Day 1: WDH sends approval letter
• Day 7: Verify with WDH Customer Service Center (1-855-294-2127) that the BENDEX transaction was transmitted
• Day 60: Call SSA at 1-800-772-1213, give your parent's Medicare number, and ask whether the state buy-in was received and when the deduction will stop
• By Day 60-90: The Part B deduction should stop from the Social Security payment. If it has not stopped by then, call SSA again and ask WDH to verify the transaction
• After the buy-in is processed: SSA issues a retroactive refund for Part B premiums withheld after the effective MSP coverage date

Keep records of every Part B deduction during the waiting period. The Social Security benefit statement (available at ssa.gov or by calling 1-800-772-1213) shows the Part B withholding amount each month.

When the Refund Doesn't Arrive

Two common problems:

SSA never received the buy-in: Call WDH at 1-855-294-2127 and ask them to verify or retransmit the BENDEX transaction. This happens occasionally when electronic interfaces between state and federal systems hit a processing error.

SSA received it but applied the wrong effective date: If the refund covers fewer months than it should, request a review. For SLMB and QI, the state can certify retroactive eligibility for up to three months before the application month.

For a parent receiving $1,400 per month in Social Security, getting SLMB approval with full retroactivity could mean a lump-sum refund of $811.60 or more (four months at the 2026 standard Part B premium of $202.90), plus ongoing monthly savings. The Wyoming Medicare Savings Programs & Extra Help Guide includes a premium tracking worksheet and SSA follow-up templates designed for exactly this process.

See more Wyoming guides →