What is a letter of protection?

A letter of protection, often shortened to LOP, lets an injured patient receive care now with payment coming from their case later. Here is how it works and what it means for a provider.

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The short answer

A letter of protection is a written agreement, typically signed by the patient and their attorney, that promises a medical provider will be paid for treatment out of any settlement or judgment in the patient’s case. The provider agrees to wait for payment, and the patient gets care without paying up front.

Why providers accept them

Many injured people cannot pay for treatment while a claim is pending, and may not want to rely on their own health insurance for accident-related care. A letter of protection lets them get treated, and it lets a provider build a practice around injury patients.

For the provider, the tradeoff is the wait. Payment depends on the case, so the balance stays open until it resolves.

What a letter of protection usually contains

The exact content varies by state and by attorney. A typical letter includes:

  • The patient’s and provider’s names and the attorney handling the case
  • A statement that the provider will treat the patient and be paid from the case recovery
  • An acknowledgment that the patient remains responsible for the bill
  • Language about how bills and records will be shared with the attorney

What can go wrong

Cases can take a long time, settle for less than expected or not settle. Good documentation, clear billing and a working relationship with the attorney all help a provider get paid in full. See our guide to personal injury billing best practices.

Where funding fits

Providers who do not want to wait can look at letter of protection funding, which provides cash against these balances under a written agreement.

A note on legal advice

This guide is general information, not legal advice. Letter of protection rules and practices vary by state. Talk with a qualified attorney about your situation.

This page is general information, not legal, tax or financial advice. Any funding is subject to review and a written agreement.

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Common questions

Is a letter of protection the same as a lien?

They are related but not identical. A letter of protection is an agreement. A lien is a legal claim on settlement proceeds. See how medical liens work.

Who signs a letter of protection?

Usually the patient and their attorney, and the provider receives a copy. Practices differ by state and by firm.

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