Medical Liens and Letters of Protection: What Those Documents in Your File Actually Do
If a provider is treating you now and expecting to be paid from your eventual settlement, there is probably a document in your file that spells out how. It might be called a lien, an assignment, a letter of protection, or a letter of guarantee. People use these terms loosely, but they are genuinely different tools with different reach. Understanding which one you are dealing with helps you understand who is protected, and how.
Disclaimer: This post is intended for general informational purposes only and does not constitute legal advice. For guidance specific to your situation, please consult with a qualified personal injury attorney.
The Statutory Healthcare-Provider Lien
Washington has a specific lien statute for healthcare providers, but it is narrower than most people assume. It applies to a defined set of providers — ambulance and hospital operators, and licensed nurses, practitioners, physicians, and surgeons — for services treating traumatic injuries. It is not a general “any medical provider” lien.
This lien attaches to a recovery from the third party who caused the injury. It does not reach first-party coverages like PIP or underinsured motorist benefits. To be valid, the notice must meet the statute’s requirements: it has to contain the required statutory information, be verified, and be filed with the auditor of the county where the service was performed. That filing puts others on notice of the provider’s claimed interest, and the provider will typically also notify the patient and the liability insurer directly.
Two limits are important. First, the aggregate of all such liens is capped at 25% of the recovery — so if a case resolves for $10,000, no more than $2,500 can be collected against everyone’s liens combined. That cap does not erase the rest of the bill; it just limits what can be enforced through the lien itself. Second, the lien covers the related treatment charges the statute allows.
Why the Lien Is Considered Strong
The reason this lien is treated as a provider’s strongest form of protection is its reach. Once properly filed, it can attach to the settlement funds in the hands of those who handle them — the liability insurer, an attorney holding the proceeds, or the patient who received the money. In practice, that means a party who pays out a settlement without accounting for a valid lien can remain responsible for it.
It is not self-executing, though. If no one pays it, enforcing it can require a lawsuit. It is also time-limited and must be enforced within the statutory window, which means the provider has to keep track of the status of the claim and act before the lien lapses. That, combined with the formality of putting the lien in place, maintaining it, and releasing it once satisfied, is the administrative tradeoff for its strength.
Letters of Protection and Assignments
A letter of protection is a different animal. It is essentially an agreement between you and your provider that funds recovered from a source you identify will be used to pay the provider’s bill, and that the instruction will not be revoked. Your attorney then acknowledges the instruction and agrees to honor it from the proceeds, including agreeing to pay the bill from the recovery.
This works because your lawyer is not taking on the debt personally — it remains your bill — but is agreeing to follow your payment direction. Practically, once a letter of protection is signed and in the file, it increases the odds the bill actually gets paid, because an attorney who has acknowledged it cannot simply disregard it.
A contractual assignment is different again. A provider may receive a contractual assignment of identified insurance benefits or settlement proceeds, depending on the document and applicable law. The scope depends on exactly what was assigned — which is why “claim,” “insurance benefits,” and “settlement proceeds” are not interchangeable, even though people often use them as if they were.
How These Tools Differ in Reach
The main limits of a letter of protection or an assignment are the flip side of the statutory lien’s strengths. A letter of protection generally binds only the people who signed it; it does not obligate the at-fault insurer, and it typically does not carry the enforcement teeth the statutory lien does. An assignment reaches only what its language actually transfers. You may also occasionally see a UCC security-interest filing used as a backup where the healthcare lien statute does not clearly apply — for instance, where care is only arguably related to the crash. The takeaway is that these instruments are not interchangeable: each has its own scope and its own way of being enforced, and the label on the page does not always tell you which one you are actually dealing with.
Final Thoughts
Liens and letters of protection all answer the same underlying question — how does a provider get paid from a claim that has not resolved yet — but they answer it in different ways, with different reach and enforceability. If you have signed one, or are being asked to, it is worth understanding exactly which tool it is and what it does to your eventual recovery.
Not sure what the paperwork in your file means for your settlement? Reach out to our team to schedule a consultation — we’re here to help injured people across Washington understand the arrangements that affect their care and their recovery.
