What Is a Letter of Protection for Medical Treatment?

A letter of protection (sometimes called an "LOP" or "letter of guarantee") is a written promise - usually signed by your attorney, sometimes also by you - that a medical provider will be paid out of your eventual settlement or court award instead of being paid up front or through your health insurance. It lets you get treatment now, without cash in hand and without billing insurance, in exchange for a lien-style claim on whatever money you recover later. It is not free care, it is not a loan in the traditional sense, and if your case settles for less than expected - or doesn't settle at all - you can still end up owing the full bill yourself.

How a letter of protection actually works

The basic mechanics are simple. Your personal injury attorney sends the medical provider (a chiropractor, orthopedist, surgeon, imaging center, physical therapist, pain clinic, and so on) a letter stating that the provider will be paid from the proceeds of your injury case when it resolves. In exchange, the provider agrees to treat you now without requiring payment at the time of service and, in most cases, without billing your health insurance for that treatment.

You typically also sign something - a lien, an "assignment of proceeds," or a similar agreement - authorizing your attorney to pay that provider directly out of any settlement or verdict before the remaining money comes to you. The provider is, in effect, agreeing to wait and take a risk on your case in exchange for being guaranteed a seat at the table when money finally arrives.

Providers who accept letters of protection are usually doing so because they see enough injury patients to manage the risk across their whole practice, not because any single case is a sure thing. Not every doctor or clinic will take an LOP, and some specialties (surgeons, imaging centers, pain management) are more willing than others.

Why people use them

• No health insurance, or a high deductible. If you don't have coverage, or your deductible is high enough that billing insurance wouldn't help much, an LOP lets you get care you couldn't otherwise afford right now.
• You want to avoid billing health insurance for an accident. Some people prefer to keep an at-fault party's liability case separate from their own health plan, partly to avoid their health insurer later asserting a reimbursement claim (subrogation) against the settlement.
• You need treatment your insurance won't authorize quickly. Certain imaging, injections, or specialist care can be slow to get approved through insurance, while an LOP provider may schedule you faster.

The real risks - read this before you sign anything

You often pay full, undiscounted rates

Health insurers negotiate discounted rates with providers. When you use an LOP instead of insurance, you frequently lose that discount and get billed at the provider's full "list" rate, which can be considerably higher than what an insurer would have paid for the identical treatment. That gap comes straight out of your settlement.

You can still owe money even if the case is small

This is the point people underestimate most. A letter of protection does not guarantee the provider gets paid only if you win, and it does not cap what you owe at whatever your settlement turns out to be. Depending on how the agreement is written:

• Some LOPs are effectively non-recourse against you personally - the provider agrees to look only to case proceeds - but many are not, and the underlying debt for services rendered is still yours regardless of what the letter says about payment timing.
• If your case settles for less than the medical bills, or the case is lost or dropped, you can be personally billed for the full balance, exactly as with any unpaid medical bill.
• Because these agreements vary by provider and by state, don't assume yours limits your liability - read the specific language, or have your attorney confirm it, before you rely on it.

It can shrink what you actually take home

Medical liens (including LOP balances) are typically paid out of the settlement before you see any money, and attorney fees and case costs also come out of the total. If treatment was billed at full rate rather than an insurance-discounted rate, more of the settlement goes to the provider and less comes to you - even in a case that otherwise looks like a "good" recovery on paper.

It can complicate negotiations at the end of the case

Near the close of a case, attorneys frequently try to negotiate down outstanding medical liens, including LOP balances, so the client keeps more of the settlement. Whether a provider will agree to reduce its bill is up to them - it is a negotiation, not a right, and some providers hold firm, especially if they took on real risk by treating you without any payment up front.

What to do if a provider or attorney offers you a letter of protection

1. Ask whether you have health insurance you could use instead, and ask your attorney to explain, in your specific situation, why an LOP is being recommended over billing insurance.
2. Get the actual written agreement - not just a verbal explanation - and read what it says about who is responsible for the bill if the case settles for less than the charges, or doesn't settle at all.
3. Ask directly: is this recourse or non-recourse against me personally? If the answer is unclear, ask your attorney to get it in writing before you start treatment.
4. Ask what rate you're being billed at - full list price or something closer to a negotiated rate - and whether that's negotiable up front rather than only at the end of the case.
5. Keep every bill and itemized statement from LOP providers; you and your attorney will need them to verify charges and to negotiate the lien later.
6. Don't sign multiple LOPs with multiple providers without tracking the total - it's easy to lose sight of how much is accumulating against a settlement that hasn't happened yet.
7. Ask your attorney, before you sign, roughly how the numbers could play out if the case settles for a modest amount - not the best-case scenario.

A word on timing

Letters of protection don't extend or pause your deadline to file a lawsuit. Every state sets its own filing deadline (statute of limitations) for personal injury claims, and it varies by state and by the type of claim - confirm your specific deadline with a local attorney rather than assuming you have more time because treatment is ongoing under an LOP.

The bottom line

A letter of protection can be a genuinely useful bridge when you need care now and don't have another way to pay for it. But it is a financial arrangement with real downside, not a free pass. Full-rate billing, personal liability that may survive a disappointing settlement, and a smaller final payout are all common outcomes, not rare exceptions. Before you agree to treat under an LOP, get the terms in writing, understand exactly what you'll owe under a worst-case outcome, and ask your attorney whether using your existing health insurance - if you have it - would leave you better off.

This article is general information, not legal or financial advice. Letter-of-protection terms, lien rules, and filing deadlines vary by state and by provider - talk to a licensed attorney in your state about your specific situation.