Part B excess charges are fees providers can bill above Medicare’s approved amount if they don’t accept assignment.
Understanding Part B Excess Charges
Medicare Part B covers outpatient services like doctor visits, lab tests, and medical equipment. But not all healthcare providers accept Medicare’s payment terms. When a provider doesn’t “accept assignment,” they can bill you more than what Medicare approves. This extra amount is known as a Part B excess charge.
Medicare sets a limit on how much a provider can charge for covered services. This limit is called the Medicare-approved amount. If your doctor or supplier charges more than this amount, and they don’t accept assignment, you’re responsible for paying the difference—the excess charge.
These charges can catch many people off guard because Medicare only pays its share based on the approved amount. If your provider bills over that, you’ll have to pay out of pocket unless you have additional coverage.
Who Can Charge Part B Excess Charges?
Not every healthcare provider charges excess fees. Providers fall into two categories regarding Medicare:
- Accept Assignment: These providers agree to accept Medicare’s approved amount as full payment. They cannot charge you more than the deductible and coinsurance.
- Don’t Accept Assignment: These providers don’t agree to Medicare’s approved fee schedule and may bill you more than Medicare allows.
If your provider doesn’t accept assignment, they can legally bill you up to 15% above the Medicare-approved amount for most services. This 15% cap is called the “limiting charge.” However, some states have laws that reduce or eliminate this excess charge limit.
How Are Part B Excess Charges Calculated?
The calculation is straightforward but important to understand:
1. Medicare Approved Amount: The baseline fee set by Medicare for each service.
2. Limiting Charge (15%): The maximum extra amount a non-assigned provider can charge over the approved amount.
3. Your Responsibility: The difference between what Medicare pays and what your provider bills.
For example, if the Medicare-approved amount for a service is $100:
- Your doctor accepts assignment: You pay only your deductible and coinsurance based on $100.
- Your doctor does not accept assignment: They can charge up to $115 (which is $100 + 15%). You pay your deductible, coinsurance based on $100 plus any remaining balance up to $115.
States That Limit or Prohibit Excess Charges
Some states have laws that prohibit or reduce these excess charges entirely, meaning providers in those states cannot bill over the Medicare-approved amount regardless of assignment status. These states include:
- California
- Minnesota
- Montana
- Pennsylvania
- Rhode Island
If you live in one of these states, you’re protected from paying excess charges under state law.
Implications of Part B Excess Charges on Your Healthcare Costs
Excess charges add an unpredictable layer of cost to your medical care. Here’s why it matters:
- Higher Out-of-Pocket Costs: If your provider doesn’t accept assignment, you could pay significantly more than anticipated.
- Insurance Coverage Gaps: Original Medicare does not cover these extra fees.
- Supplemental Insurance Role: Medigap plans often cover Part B excess charges but only certain plan types (Plan F and Plan G) include this benefit.
If you don’t have supplemental coverage that pays excess charges, these fees come straight from your pocket. It’s essential to check whether your doctors accept assignment before getting treatment.
How Medigap Plans Handle Excess Charges
Medigap plans are designed to fill gaps in Original Medicare coverage:
| Medigap Plan | Covers Part B Excess Charges? | Notes |
|---|---|---|
| Plan F | Yes | Covers all excess charges fully |
| Plan G | Yes | Covers all except Part B deductible |
| Plan K | No | Limited coverage; does not cover excess charges |
| Plan L | No | Limited coverage; does not cover excess charges |
| Other Plans | No | Most other plans do not cover excess charges |
Since only a few Medigap plans cover these extra fees, choosing the right plan is critical if you want protection from unexpected bills.
How to Avoid Paying Part B Excess Charges
Avoiding these extra costs requires some planning:
1. Verify Provider Assignment Status
Before scheduling an appointment or procedure, ask if your provider accepts assignment with Medicare. Many offices will provide this information upfront.
2. Choose Providers Who Accept Assignment
Providers who accept assignment agree not to bill more than the approved amount plus deductible and coinsurance.
3. Consider Supplemental Insurance
If your preferred providers do not accept assignment, consider enrolling in a Medigap plan—Plan F or G—that covers excess charges.
4. Know Your State Laws
If you live in a state that limits or bans excess charges, confirm with your provider how billing works there.
5. Request an Estimate Before Treatment
Ask for an itemized estimate of all fees before receiving services so you know potential costs ahead of time.
What Happens if You Don’t Pay Excess Charges?
Nonpayment of legitimate medical bills can lead to collection actions against you by providers or billing agencies. Since these are legal fees allowed by law when providers don’t accept assignment, ignoring them isn’t advisable.
Always communicate with providers about payment plans if needed rather than ignoring bills related to excess charges.
Common Misconceptions About Part B Excess Charges
Many people misunderstand what these charges mean or when they apply:
- Some think all doctors charge extra fees—only those who don’t accept assignment can.
- Others believe Original Medicare covers everything—excess charges are specifically outside Original Medicare’s payment scope.
- Some assume supplemental insurance always covers these fees—only select Medigap plans do.
Clearing up these misconceptions helps avoid surprise bills and allows better financial planning for healthcare expenses.
Why Do Some Providers Not Accept Assignment?
Providers may refuse assignment because:
- They want flexibility to set their own rates above Medicare limits.
- Administrative burden of dealing with Medicare billing rules.
- Perception that reimbursement rates are too low.
This choice shifts more financial responsibility onto patients when using those providers.
Key Takeaways: What Are Part B Excess Charges?
➤ Part B excess charges are fees above Medicare limits.
➤ They apply when providers don’t accept Medicare assignment.
➤ Excess charges can increase your out-of-pocket costs.
➤ Medicare sets limits on how much can be charged.
➤ Not all providers bill excess charges to patients.
Frequently Asked Questions
What Are Part B Excess Charges in Medicare?
Part B excess charges are fees that healthcare providers can bill above Medicare’s approved amount if they don’t accept assignment. This means you may have to pay more out of pocket when your provider charges up to 15% over the Medicare-approved fee for covered services.
Who Can Charge Part B Excess Charges?
Only providers who do not accept assignment can charge Part B excess charges. These providers don’t agree to Medicare’s payment terms and may bill you up to 15% above the approved amount, known as the limiting charge, depending on your state’s laws.
How Are Part B Excess Charges Calculated?
The calculation is based on the Medicare-approved amount plus a limiting charge of up to 15%. For example, if the approved amount is $100, a non-assigned provider can charge up to $115. You pay your deductible and coinsurance plus any excess charge.
Why Should I Understand Part B Excess Charges?
Understanding these charges helps you avoid unexpected medical bills. Medicare only pays its share based on the approved amount, so if your provider doesn’t accept assignment, you could be responsible for paying the difference out of pocket.
Do All States Allow Part B Excess Charges?
No, some states have laws that limit or prohibit Part B excess charges. These state regulations can reduce or eliminate how much extra a provider can bill beyond Medicare’s approved amount, protecting patients from high out-of-pocket costs.
Conclusion – What Are Part B Excess Charges?
Part B excess charges are additional amounts some healthcare providers legally bill above the standard Medicare-approved fee when they don’t accept assignment. These fees can increase out-of-pocket costs substantially unless covered by specific Medigap plans or restricted by state laws.
Knowing whether your doctor accepts assignment protects you from unexpected bills and helps manage healthcare expenses wisely. Always verify provider billing status before care and consider supplemental insurance options that cover these extra costs for peace of mind during medical treatment decisions.