Yes, you can refuse. And in many situations, you should. But the more important question is what you are actually being asked to hand over when you sign one of these forms, because most people who sign them have no idea how broad they are until it is too late. The form the insurance adjuster sends over is not simply a request to see the records related to your accident injuries. In most cases, it is an authorization to access your entire medical history, going back years or even decades, with no meaningful limitation on scope. Understanding that distinction is the first step to understanding why your answer to this request matters so much.

When you file a personal injury claim after a car accident, you are putting your physical condition at issue. The law recognizes that the person or company you are claiming against has a legitimate interest in information about your injuries. That is reasonable on its face. What is not reasonable, and what insurance companies routinely attempt anyway, is using that legitimate interest as a pretext to excavate your entire medical background looking for pre-existing conditions, prior complaints, mental health history, past surgeries, and anything else that might be used to argue that your current injuries are not their insured’s fault or are not as serious as you say they are. A blanket medical authorization is not a narrow request for relevant records. It is a fishing expedition wrapped in routine paperwork.

The form itself is often structured to look like a standard administrative document. It may reference HIPAA, use language about coordinating your care, and arrive alongside other forms that seem like ordinary parts of the claims process. None of that changes what it actually does. When you sign a blanket authorization, you are giving the insurance company permission to contact any medical provider you have ever seen and request any records those providers have about you. Your primary care physician from ten years ago. Your therapist. Any mental health provider you have ever visited. Specialists you saw for conditions that have nothing to do with your accident. All of it becomes accessible, and the insurer’s team will go through all of it looking for anything they can use to minimize what they owe you.

Here is the thing that most people are never told. You are not required to sign a blanket medical authorization to pursue your claim. What the insurance company is legally entitled to, through the discovery process if your case goes to litigation, is medical information reasonably related to the injuries you are claiming. That is a much narrower category than your complete lifetime medical record. The distinction between what they are entitled to and what they are asking for is often enormous, and they are counting on you not knowing the difference.

If you have an attorney, this issue should be handled by them before you sign anything. One of the most valuable things an attorney does in the early stages of a personal injury claim is control what medical information flows to the other side and in what form. Rather than signing a blanket authorization, your attorney will typically gather your relevant medical records directly, review them for content that might be mischaracterized or used against you, and produce them to the insurer in a way that keeps the scope of disclosure tied to the injuries actually at issue. That process is not about hiding information. It is about making sure the information that gets shared is the information that is actually relevant, presented in context rather than handed over raw for an adjuster to mine for anything useful to their side.

The pre-existing condition issue is where this gets particularly consequential. Insurance companies know that a significant percentage of people who are injured in car accidents have some prior medical history involving the same general area of the body. If you had a prior back injury and you now have a herniated disc from a car accident, the insurer’s goal in accessing your pre-accident records is to argue that your current condition is just a continuation of something that was already there. Missouri law, like most states, recognizes the eggshell plaintiff doctrine, which holds that a defendant takes the plaintiff as they find them. If your pre-existing back condition made you more vulnerable to a serious disc injury from an impact that might not have injured a healthier person, that does not reduce the at-fault driver’s liability. They are still responsible for the harm their negligence caused. But insurance companies use pre-existing condition records to confuse that issue, to suggest to adjusters, mediators, and juries that your injuries were not caused by the accident but were simply already there. The broader the medical authorization you sign, the more ammunition you hand them for that argument.

Mental health records deserve particular attention here. If you have ever received mental health treatment, seen a therapist, been prescribed medication for anxiety or depression, or sought help for any psychological condition, a blanket medical authorization will expose all of it. Insurance companies will use prior mental health history to argue that your pain and suffering damages are lower than they actually are, that your reported symptoms are psychological rather than physical in origin, or that your emotional response to the accident is disproportionate based on a pre-existing condition. None of those arguments may have any merit in your specific case. But you cannot un-disclose records once you have authorized their release. The damage to your claim from handing over mental health records that have nothing to do with your accident injuries can be substantial and irreversible.

There is a specific version of this situation that is worth addressing directly because it catches people off guard. If you are making a claim against your own insurance company, whether for uninsured motorist coverage, underinsured motorist coverage, or med-pay benefits, the dynamic shifts in a way that feels counterintuitive. You might assume that your own insurer, the company you have been paying premiums to for years, is on your side. They are not, not in the adversarial sense that matters when money is on the table. When your own insurer is evaluating a UM or UIM claim, they have the same financial interest in minimizing your payout that any other insurer would have. Their requests for broad medical authorizations should be treated with the same caution as those coming from the other driver’s insurance company.

What you can do instead of signing a blanket authorization is respond to the insurance company’s request in a way that acknowledges their legitimate interest while limiting the scope of the disclosure to records actually related to your injuries. This is done by providing records directly, through your attorney, covering the treatment you have received for the injuries caused by the accident. It is also done by specifying in any authorization you do sign that the scope is limited to treatment related to the accident in question, covering a defined time period, and excluding mental health records and records unrelated to the claimed injuries. Insurance companies will sometimes push back on a limited authorization. That pushback is not evidence that you are required to give them more. It is a negotiating position, and it should be treated as one.

If you are not yet working with an attorney and an adjuster is pressuring you to sign an authorization quickly, the most important thing you can do is slow down. You are not required to sign the form immediately. You are not required to sign it at all as a condition of your claim being considered. If an adjuster tells you that your claim cannot move forward unless you sign a blanket authorization, that statement deserves skepticism. What is actually true is that your claim cannot settle without the insurer having enough information to evaluate your damages, but that information does not have to arrive via a blanket authorization to your entire medical history. It can be produced in a controlled, targeted way that protects your interests while giving the insurer what they are legitimately entitled to see.

The timing of the authorization request also matters. Insurers often send these forms very early in the claims process, sometimes before your treatment is complete and before you have a clear picture of the extent of your injuries. Getting access to your records early gives them the ability to start building their pre-existing condition narrative before you have even figured out what your case is worth. It also gives them information that can be used in recorded statements and early settlement conversations to steer the discussion in directions that benefit them. Signing the authorization early, before you understand what you are signing or what the records contain, is one of the most consequential mistakes people make in the first weeks after an accident.

The simplest framing for this is that your medical history is yours. The part of it that is relevant to your accident claim belongs in your case. The rest of it does not, and no one is entitled to it simply because you were in a car accident. An insurance company that sends you a form designed to access everything is not making a reasonable request. They are making a maximally broad request and hoping you will not look closely enough to realize what you are handing over. Looking closely is not paranoia. It is the minimum required to protect yourself in a process that is not designed with your interests in mind.

This article is intended for general informational purposes only and does not constitute legal advice. No attorney-client relationship is created by reading this content. Laws and insurance practices vary by state, and individual claim circumstances differ significantly. If you have been injured in a car accident, consult with a licensed personal injury attorney in your jurisdiction before signing any authorization form or releasing medical records to an insurance company.