Texas's New 2026 Medical Billing Law: What HB 4145 Means for Your Injury Settlement

Here's a situation that played out in Texas injury cases for years: You get hurt in a car accident on the Katy Freeway. Your attorney sets you up with a doctor who agrees to treat you on a letter of protection, basically a promise that the doctor gets paid from your eventual settlement. You get your treatment. Then at settlement time, the numbers don't add up the way you expected.

Part of the reason was a legal gap that let certain medical providers lose their right to collect if bills were routed through an attorney. That gap is now closed. Texas House Bill 4145, which took effect in 2026, amended Texas Civil Practice & Remedies Code § 146.002 and changed the rules around medical billing in personal injury cases. If you're currently pursuing an injury claim, or about to settle one, this law affects you.

First, Some Background on How Medical Bills Work in Texas Injury Cases

When you're injured in an accident and don't have health insurance, or your health insurance refuses to cover treatment tied to a pending injury claim, your options for getting medical care are limited. Many injured Texans turn to providers who accept a letter of protection, often called an LOP.

An LOP is an agreement between your attorney, you, and the treating provider. The provider treats you now. In exchange, your attorney agrees that when your case settles, the provider gets paid directly from the settlement funds before you receive your portion. Think of it as a medical lien attached to your case.

This arrangement lets people get the care they need without having to pay out of pocket first. That's genuinely useful for someone who just got hit by a distracted driver on I-10 and can't work while their neck heals.

The problem was what happened on the back end. Specifically, what amount the at-fault party's insurer had to actually pay.

The Loophole That HB 4145 Closed

Before HB 4145, Texas courts wrestled with a doctrine that limits the amount of medical damages a plaintiff can recover. Under the older framework of Texas Civil Practice & Remedies Code § 41.0105 , you could only recover the amount of medical expenses "actually paid or incurred," not the full sticker price of a hospital bill that nobody actually pays.

In practice, this meant that if your surgery had a billed charge of $80,000 but your insurer had a contracted rate of $22,000, you could generally only recover around $22,000 from the defendant. That was the amount actually paid or accepted as payment in full.

Here's where the loophole came in. When treatment was provided on a letter of protection, the full billed amount was technically "incurred." No contracted discount applied. But some providers, when their billing was routed through injury attorneys, ran into collection problems. In certain situations, providers couldn't enforce their full lien amount, which left the billing question in a murky gray zone that different courts handled differently.

Insurers took advantage of this inconsistency. Defense attorneys argued that LOP-based medical bills should be treated differently than cash or insurance-paid bills. Sometimes that worked, sometimes it didn't, depending on the court and the facts. In Harris County courts, this played out repeatedly in ways that left injured people uncertain about what their medical damages were actually worth.

The underlying question was always: what counts as a real medical debt for purposes of your personal injury claim? HB 4145 gives that question a clearer answer.

What HB 4145 Actually Changed

HB 4145 amended Texas Civil Practice & Remedies Code § 146.002 to close the collection-rights gap. Under the amended statute, a medical provider does not lose its right to collect on a bill, and does not lose the enforceability of its lien, simply because billing was handled through an injury attorney or because the patient is represented by counsel in a personal injury claim.

In plain terms: the routing of a bill through an attorney's office can no longer be used as a basis for arguing that the provider gave up its right to be paid, or that the amount billed shouldn't count as a legitimate medical debt in your case.

This matters for two connected reasons.

First, it stabilizes the medical lien landscape. Providers who treat injury clients on letters of protection now have more legal certainty that their liens will hold up. That's actually good for injured people. Providers are more willing to treat you when they're confident they'll get paid from your settlement.

Second, it affects the damages calculation in your case. If the full billed amount is an enforceable debt, it's harder for a defense insurer to argue that your medical damages should be valued at some hypothetical discounted rate. Your incurred medical expenses are what they are.

How This Plays Out in a Real Settlement

Walk through a simplified example. Say you were rear-ended on Loop 610 near the Galleria and you needed two surgeries. Your LOP provider billed $120,000. Under the old, murkier system, a defense attorney might argue that the LOP bills weren't fully enforceable and push to value your medicals at some fraction of that number. Your settlement negotiations started from a disputed base.

Under HB 4145, that argument is harder to make. The provider's right to collect is protected. The $120,000 is a real, enforceable debt. Your attorney negotiates from that foundation.

What changes at settlement is that the lien still has to be resolved before you get your check. Your attorney negotiates with the medical provider, often trying to reduce the lien amount so more money goes to you, while also negotiating with the insurer on total settlement value. HB 4145 doesn't eliminate that process. It just makes the underlying numbers more stable.

The practical result: less room for insurers to lowball your medical damages by attacking the validity of your LOP-based bills. That's a meaningful shift.

What Hasn't Changed. And What You Still Need to Watch

HB 4145 didn't rewrite how Texas handles all medical damages. A few things are still the same:

• The "paid or incurred" rule from Texas Civil Practice & Remedies Code § 41.0105 still applies in other contexts. If your treatment was covered by health insurance, the defendant generally doesn't owe you the full billed amount, only what was actually paid.
• Medical liens still have to be paid out of your settlement. A bigger enforceable lien number isn't automatically better for you if it comes out of your pocket before you see a dime. Lien negotiation, getting providers to accept less than the full lien amount, is still one of the most important jobs your attorney does at the end of a case.
• Texas's modified comparative fault rule, which reduces what you can recover if you were partly at fault for the accident, still applies to your overall case. HB 4145 didn't touch that.
• The two-year statute of limitations for most personal injury claims in Texas (Texas Civil Practice & Remedies Code § 16.003) is unchanged. If you were hurt, the clock is already running.

Knowing a law changed is one thing. Understanding how it interacts with the rest of your case is another. That's where having an attorney who follows Texas legislative changes actually matters.

What This Means If You're Currently Treating on a Letter of Protection

If you're already in the middle of treatment on an LOP, whether it's physical therapy in Pearland, surgery at a facility in the Medical Center, or ongoing specialist visits, HB 4145 works in the background to protect both you and your provider.

Your provider is less likely to face collection challenges based solely on how your billing was structured. That means your treatment relationship is more stable. It also means the bills you're accumulating are on firmer legal footing as evidence of your medical damages when settlement time comes.

That said, talk to your attorney about how these bills are being documented and tracked. Every invoice, every treatment record, every itemized billing statement matters. The law protects your damages. Your records prove them.

What This Means If You Haven't Settled Yet

If your case is still open and you had LOP-based treatment, bring this law up with your attorney if they haven't already raised it. Ask specifically:

• How are my LOP medical bills being presented to the insurer?
• Is the insurer disputing the validity or amount of those bills?
• What's the current lien total, and what's our strategy for negotiating it down?

These are fair questions. A good attorney won't be annoyed by them. They'll already have answers.

If the insurer is still trying to argue that your LOP-based medical bills are somehow not legitimate debts, HB 4145 is now part of your attorney's response to that argument. It's recent, it's directly on point, and it didn't get a lot of attention when it passed. Some adjusters may not have updated their playbooks yet.

What This Means If You Haven't Hired an Attorney Yet

HB 4145 is a concrete example of why Texas injury law keeps changing in ways that matter to real people. This wasn't a headline-grabbing reform. It was a targeted statutory fix that will quietly affect thousands of injury settlements across Texas every year, including cases filed in Harris County District Court, Fort Bend County, and Montgomery County.

If you're unrepresented and negotiating directly with an insurer, you almost certainly don't know this law exists. The adjuster on the other end of the phone does, or should. That information gap costs people money.

Our car accident practice handles cases involving exactly this kind of medical billing complexity. We track legislative changes because they directly affect how we build our clients' cases. If you'd like to talk through where your claim stands, a free case review is a good place to start.

The Bottom Line

HB 4145 is a pro-plaintiff change to Texas law. It closes a loophole that insurers used to challenge medical damages in LOP-based cases. It stabilizes medical providers' collection rights. And it gives injury attorneys firmer ground to stand on when presenting your medical damages at settlement.

It doesn't guarantee any particular outcome. No law does. But it removes a tool the defense side was using to undervalue legitimate injury claims. For injured Texans who needed medical care and got it through a letter of protection, that's a meaningful improvement.

If you have questions about how this applies to your specific situation, whether you're still treating, in the middle of settlement negotiations, or just trying to figure out where you stand, get those questions answered by someone who knows Texas injury law. Don't let a legal technicality cost you money you're entitled to.