A patient walks into your emergency department after a car accident. Or your orthopedic clinic after a slip-and-fall at a grocery store. They have an active personal injury claim with an attorney, no health insurance willing to pay primary, and no money in their pocket. The right thing to do clinically is to treat them. The right thing to do financially is to make sure your reimbursement actually comes through when the case resolves. Those two goals are not in conflict — but managing the gap between them takes infrastructure most practices don't have.
This guide walks through how medical liens and Letters of Protection (LOPs) actually work, what providers consistently get wrong, and what a clean PI receivable workflow looks like.
What a Letter of Protection actually is
A Letter of Protection is an agreement, typically signed by the patient and their personal injury attorney, that guarantees payment of the medical bill out of any future settlement, judgment, or insurance recovery from the underlying accident or injury claim. It allows the provider to deliver care without requiring payment up front, while preserving the right to be paid from the case proceeds.
A well-drafted LOP includes:
- The patient's signature acknowledging the obligation to pay from any recovery
- The attorney's signature agreeing to honor the lien at disbursement and not distribute funds without notifying the provider
- The provider's identification as the lienholder
- Clear billing language about what reimbursement rate applies (often the provider's standard charges, sometimes Medicare-equivalent benchmarks)
- Default and remedy provisions if the settlement happens without honoring the lien
A bad LOP — and we see a lot of them — is a one-page template the patient signs at registration, never countersigned by the attorney, and forgotten by everyone until the practice tries to collect three years later. By then the case has often settled, the patient has been paid, the attorney has closed the file, and the recovery is gone.
The medical lien layer on top of the LOP
A Letter of Protection is a contract. A medical lien is a statutory or common-law right to be paid from a specific fund — usually the settlement proceeds from the third-party liability case. The two work together. The LOP creates the agreement; the lien protects the provider's claim against the recovery itself.
Medical lien rights vary significantly by state. Some states have robust statutory hospital lien laws. Others rely on common-law equitable liens or contract-based liens via the LOP. In states with weak lien protection, the LOP becomes the only enforceable mechanism, which makes the quality of the LOP and the relationship with the patient's attorney even more important.
Perfecting a lien typically involves:
- Filing the lien with the appropriate court, county recorder, or designated state agency
- Serving notice on the patient, the patient's attorney, and any known insurance carrier or third party
- Periodic lien balance updates to keep the recorded amount current as care continues
- Affirmative communication at settlement — getting on the disbursement sheet, signing off on the release if required, and ensuring funds flow correctly
What most providers get wrong
After working thousands of PI receivables across hospitals, orthopedic groups, pain clinics, imaging centers, and physical therapy practices, the same handful of mistakes show up over and over.
1. The LOP isn't actually executed
The patient signs at intake but the attorney never countersigns. Without the attorney's signature, you have a patient promise, not a binding agreement with the firm holding the settlement funds. When disbursement happens, the firm has no contractual obligation to pay you.
2. There's no single point of contact for the case
Your billing team handles the bill, your front desk handled the LOP, and nobody owns the relationship with the PI attorney. Status check calls don't happen. Settlement notifications go to a generic billing inbox. The case resolves and the practice finds out months later, after the funds have been distributed.
3. The lien isn't perfected or balance-updated
A lien filed at $5,000 of initial treatment doesn't automatically grow as you continue to deliver care. Without periodic updates, the provider's recorded interest understates the actual bill, and at settlement the recovery is limited to the recorded amount.
4. Documentation doesn't support the damages framework
Especially in Florida under HB 837 / §768.0427, the admissible damages calculation depends on the reimbursement benchmark the provider can substantiate. Without an automated billing comparison record (often at 120% of Medicare), the practice can't fully support its damages position in litigation.
5. Statute of limitations exposure goes unmanaged
PI cases can stretch for years. State-level statutes of limitations on the underlying personal injury claim, and separately on the provider's lien rights, are easy to miss when the practice is focused on current care. Cases age out and the recovery is lost.
What a clean PI receivable workflow looks like
The goal is to convert PI receivables from a high-touch, low-yield category into a managed asset. Every case should follow the same arc:
Intake — execute the LOP correctly the first time
Standardized LOP template, signed by patient at registration and immediately routed to the patient's PI attorney for countersignature. If the attorney doesn't countersign within a defined window, that's a triage signal — the case may not be viable for LOP servicing and the practice can shift to a different financial pathway.
Perfection — file the lien, set the calendar
State-appropriate lien filing executed within statutory windows. Diary entries for lien balance updates as care continues. Statute-of-limitations triggers set for both the underlying case and the lien rights.
Servicing — own the attorney relationship
Single point of contact for the PI firm. Periodic status check cadence (typically quarterly). Demand updates sent proactively as treatment continues. Settlement notifications routed to one inbox that someone actually monitors.
Settlement — negotiate from a position of preparation
When the case resolves, the lienholder is on the disbursement sheet, the lien balance is current, the documentation supports the damages framework, and the lien reduction negotiation (if any) happens from a defensible position. Final disbursement is reconciled against the bill and any remaining balance is appropriately resolved.
The difference between providers who get paid on PI cases and providers who write them off is usually not the legal theory. It's whether anyone is actually managing the case.
Why providers outsource this
Running this workflow well requires staff who understand LOPs, lien filing, attorney communication, and settlement coordination — and who have the time to maintain the case calendar across hundreds or thousands of active matters. Most billing departments don't have that capacity. The cases sit, age, and silently fail.
This is the work MAS handles under Medical Lien & LOP Management, powered by our Avon Contract Automation platform. We draft and execute LOPs, perfect liens, serve as the single point of contact for the PI firm, track settlements, negotiate lien reductions where appropriate, and reconcile disbursements when the case resolves. The provider keeps treating. We make sure the bill gets paid.
If your practice carries meaningful PI receivables and the recovery rate doesn't match the underlying case volumes, that gap is almost always operational, not clinical. Talk to a senior attorney at MAS for a candid read on your current workflow.