A letter of protection in a personal injury case is a written agreement between your attorney and a medical provider in which the provider treats you now and waits to be paid out of your eventual settlement or judgment. It’s used when you have no health insurance, your plan won’t cover accident-related care, or you need specialized treatment you can’t pay for while the case is pending. The arrangement delays payment; it doesn’t erase the obligation. What you agree to at the start can meaningfully change what’s left for you at the end.
How the Arrangement Works
Your attorney drafts and sends a letter to the provider stating that the provider’s bills will be paid from whatever you recover. The provider agrees to treat you without collecting upfront. In return, they get a commitment, backed by your attorney’s professional reputation, that they’ll be paid when the case concludes.
Three parties are involved. You get care you need now. The provider accepts a promise of future payment instead of running the bill through insurance or demanding cash. Your attorney takes on the duty of directing settlement funds to the provider when the case ends.
No money moves until the case resolves. That wait can run months or years, and the provider absorbs the delay. A typical letter identifies the three parties, describes the treatment covered, and spells out the attorney’s commitment to pay the provider directly from the recovery.
When This Approach Makes Sense
These letters tend to appear when there’s a gap between the care you need and what you can access or afford right now. Common situations:
- You were uninsured at the time of the accident and can’t pay out of pocket.
- Your health plan won’t cover accident-related care, or excludes the specific treatment you need.
- You need surgery, advanced imaging, or extended physical therapy from a provider willing to defer payment.
- Your attorney wants you treated by a specialist whose records and testimony will strengthen the claim.
If you already have health insurance that covers the treatment, this route may not be your best option. The cost difference between letter-of-protection billing and insurance billing can significantly affect what you take home.
Why the Billed Amounts Matter
This is where people lose real money without realizing it. With health insurance, your provider bills at the rate your insurer has negotiated. Those rates are almost always substantially lower than what the same provider charges without insurance. A procedure billed at $8,000 through a health plan might come in at $30,000 or more under a letter of protection, because the provider isn’t bound by any fee schedule and is pricing in the risk of delayed or zero payment.
Investigative reporting has found cases where these charges ran five to twenty times higher than what private insurance or Medicare would have reimbursed for identical procedures. That gap matters at settlement time, because your attorney pays providers from your recovery before you see a dollar. Higher bills, smaller share.
Health insurance does carry its own complication: subrogation. Your insurer will likely claim a right to be reimbursed from your settlement for what it paid toward accident-related care. But the subrogation amount, based on the discounted rates your insurer actually paid, is usually far less than what a provider would charge under a letter of protection. Many attorneys can negotiate those subrogation amounts down further.
Some health plans treat themselves as secondary to auto insurance and push you to file through the at-fault driver’s coverage first. Certain specialized treatments may not be covered at all. In those cases, the letter fills a genuine gap. When insurance is available and covers what you need, using it almost always leaves more money in your pocket.
Where It Sits in the Settlement Payout
The payment order shows exactly where these obligations fit and how much of your recovery they can consume. When your case resolves, money flows in a specific sequence:
- The settlement check goes to your attorney’s trust account first.
- The contingency fee comes out, usually 33% to 40% depending on whether the case settled or went to trial.
- Case costs are deducted next: filing fees, expert witnesses, deposition costs, and similar expenses.
- Providers holding letters of protection or medical liens are paid from the remaining balance.
- Any pre-settlement cash advance you took is repaid.
- Whatever is left is yours.
Run the numbers on a hypothetical $100,000 settlement: a 33% attorney fee takes $33,000, case costs take another $10,000, and $30,000 in letter-of-protection bills leaves you with $27,000. If those same treatments had been billed at $12,000 through health insurance, even before any negotiation of the insurer’s subrogation claim, your take-home would be substantially larger.
One of the more valuable things your attorney does at the close of a case is negotiate these balances downward. Providers who treated you under this arrangement know they’re competing with other providers, attorney fees, and case costs for the same limited pool of money. Most will accept a reduction rather than fight for the full billed amount, especially when the alternative is a long battle over a balance that may never get paid. Ask your attorney early how aggressively they negotiate these bills. The answer varies widely from firm to firm, and it directly affects your bottom line.
What Can Go Wrong
You May Still Owe If the Case Fails
The biggest risk is straightforward. If your case ends in no recovery, the medical bills don’t vanish. Many of these agreements include language making you personally responsible for the balance if the contingency, a settlement or judgment, never happens. A case can fail because liability can’t be proven, because the defendant is uninsured and has no assets, or for other reasons that have nothing to do with how badly you were hurt.
Even a successful case can create problems. If your settlement comes in lower than expected, the gap between what providers billed and what the recovery can cover falls on you. Some states limit patient liability in this situation; others treat the arrangement as a standard debt that becomes due. The specific language in the agreement controls what happens, which is why reading it before treatment starts matters more than trusting that your attorney has it handled.
Bills Can Run Higher Than Insurance Would Pay
Providers using this arrangement aren’t constrained by negotiated fee schedules. The structural incentives encourage higher billing: the provider is taking on the risk of a long wait and the possibility of no payment, and they price that risk into their charges. Defense attorneys and insurance industry representatives have long argued that this inflates medical costs to pump up settlement demands and jury verdicts.
Whether that criticism is fair or not, the practical result for you is the same. Higher bills eat into your recovery. The arrangement can also incentivize more treatment rather than less, because every additional visit adds to the provider’s future payout.
The Defense May Learn About It
In a growing number of jurisdictions, defense attorneys can discover these letters during litigation. Courts have recognized that they’re relevant to provider bias and the reasonableness of medical charges. The defense argument runs this way: a provider who stands to be paid more if the plaintiff wins more has a financial incentive to overtreat, overbill, and testify favorably.
Several state supreme courts have allowed these letters to be used for impeachment at trial, letting juries weigh whether a provider’s billing and testimony are influenced by a financial stake in the outcome. It doesn’t make the arrangement fatal to your case, but it’s a strategic factor your attorney should weigh when deciding how to structure your care and which providers to use.
How This Differs From a Medical Lien
These two get confused constantly, and they work differently.
A letter of protection is voluntary on all sides. Your attorney sends it, the provider accepts or declines, and the arrangement depends on contract terms the parties agree to. If a provider doesn’t want the risk, they walk away.
A medical lien is a legal claim a provider files against your settlement or judgment, typically under a state statute that specifically authorizes it. In many states, a hospital or other provider can file a lien after treating you without needing your agreement. The lien attaches to your recovery and generally carries stronger enforcement power because it has statutory backing rather than relying on contract law alone.
Both create obligations against your settlement proceeds. But liens follow formal filing and notice requirements, and if the provider doesn’t follow those requirements precisely, the lien may be invalid and unenforceable. A letter of protection, being contractual, hinges on whether the agreement itself holds up. A poorly drafted one may be harder for a provider to enforce than a properly filed statutory lien.
Questions to Ask Before You Sign
If your attorney recommends this route, have a frank conversation before treatment begins.
- What happens to these bills if my case fails? Get a direct answer about personal liability, not vague reassurance.
- What rates will the provider charge, and how do they compare to what health insurance or Medicare would pay for the same treatment?
- Can we use health insurance for any of this? A combination sometimes works, with insurance covering what it can and the letter filling the gap for excluded treatment.
- Is there a cap on what the provider can charge? Some agreements include rate limitations. Many don’t, and that silence benefits the provider.
- How will you negotiate these bills at settlement? Your attorney’s track record on inflated charges is one of the most important and least-discussed factors in what you ultimately take home.