What Is a Medical Lien?
October 28, 2026
After an accident, many people delay medical treatment because they cannot pay for it up front. A medical lien, or a similar agreement called a letter of protection, lets an injured person get treated now while the provider is paid later from the personal injury settlement or judgment.
The basic definition
In general legal terms, “a lien is a security interest or legal right acquired in one’s property by a creditor” (Cornell Law School, LII). In a personal injury case, the “property” is usually the injured person’s claim and the money that comes from it, not their house or car.
Lien vs. letter of protection
People often use these terms interchangeably, but they are not always the same:
| Statutory medical lien | Letter of protection (LOP) | |
|---|---|---|
| Where it comes from | Created by a state law | Created by an agreement between the patient, the provider, and usually the attorney |
| Who typically uses it | Hospitals and emergency medical services (depending on the state) | Doctors, specialists, therapists, imaging centers |
| What it attaches to | The claim, judgment, or settlement, as defined by the statute | Payment promised from the judgment or settlement |
| Rules | Set by the state statute (deadlines, caps, exceptions) | Set mainly by the contract, plus any state disclosure rules |
Florida law, for example, defines a letter of protection as “any arrangement by which a health care provider renders treatment in exchange for a promise of payment” from a judgment or settlement in a personal injury or wrongful death action (Fla. Stat. § 768.0427).
How it works, step by step
- Treatment. The injured person receives care from a provider who agrees to wait for payment.
- Agreement or notice. The patient (and usually the attorney) signs a letter of protection, or the hospital perfects its lien as the state statute requires.
- The case moves forward. The attorney negotiates with the insurance company or goes to court.
- Settlement or judgment. When the case resolves, the provider is paid from the proceeds, as agreed or as the law requires.
- Remaining funds. What is left after medical bills, attorney fees, and costs goes to the client.
A real example: Texas hospital liens
State laws vary widely. Texas is a good example of how detailed a hospital lien statute can be (Texas Property Code, Chapter 55):
| Rule | What Texas law says |
|---|---|
| Who has a lien | A hospital that treats a person injured in an accident attributed to someone else’s negligence, if the person is admitted within 72 hours of the accident (§ 55.002) |
| Emergency medical services | EMS providers also have a lien in counties with a population of 800,000 or less, if services are provided within 72 hours (§ 55.002) |
| What it attaches to | The cause of action, a judgment, and the proceeds of a settlement (§ 55.003) |
| What it does not attach to | Workers’ compensation claims and, with some exceptions, the injured person’s own insurance policy proceeds (§ 55.003) |
| Hospital lien limit | The lesser of charges for the first 100 days of hospitalization or 50% of the amount recovered (§ 55.004) |
| EMS lien limit | Up to $1,000 for services in the first 72 hours (§ 55.004) |
Other states have different deadlines, caps, and filing rules, so always check the law where the accident happened.
Disclosure rules are growing
Some states now require letters of protection to be disclosed in the lawsuit. In Florida, a claimant must disclose a copy of the letter of protection and itemized, coded billing for the treatment. If the provider sold the account to a third party, the claimant must also disclose who bought it and how much was paid. Florida makes this disclosure “a condition precedent to asserting any claim for medical expenses for treatment rendered under a letter of protection” (Fla. Stat. § 768.0427).
What if Medicare paid for your care?
If Medicare paid for treatment related to the accident, those payments are “conditional” and Medicare must be repaid from the settlement. Medicare’s Benefits Coordination & Recovery Center sends a conditional payment letter while the case is open and issues a formal demand once there is a settlement, judgment, or award (CMS). Your attorney should account for this before the case closes.
Questions to ask before signing
- What exactly will I owe, and is it based on the provider’s regular rates?
- What happens if my case does not settle or I lose? (Under many agreements, the patient may still owe the bill.)
- Will the provider sell my account to a third party?
- Does my state have any caps, deadlines, or disclosure rules?
- Has my attorney reviewed the agreement?
How Healthcare PI helps
Healthcare PI works with a network of physicians and attorneys so that patients can receive lien-based care, providers are paid, and law firms have the documentation they need. Contact us to learn more.
This article is for general information only and is not legal advice. Lien laws vary by state. Consult a licensed attorney about your situation.
Sources
- Cornell Law School, Legal Information Institute. Lien.
- Florida Statutes. § 768.0427, Admissibility of evidence to prove the cost of damages for medical expenses.
- Texas Property Code. § 55.002, Lien; § 55.003, Property to Which Lien Attaches; § 55.004, Amount of Lien.
- Centers for Medicare & Medicaid Services. Attorney Services: Medicare Secondary Payer recovery.