Texas Health Insurance Claim Denied in 2026? Here’s What to Do First

A denied health insurance claim can feel overwhelming — especially when you are sick, worried about a loved one, facing a large bill, or waiting for care your doctor believes you need.

The first thing to know is that a denial is not always the final answer. Many health insurance denials can be challenged, but the best next step depends on what kind of denial you received, what kind of health plan you have, and whether the issue is medical necessity, prior authorization, missing paperwork, billing, network status, or plan rules.

This guide is for Texas patients asking: “My health insurance denied my claim. What do I do now?” It will walk you through how to read the denial, what to ask your insurer, how to prepare an internal appeal, and when Texas independent review or federal external review may be available.

Before you begin, confirm what kind of plan you have. The Texas Department of Insurance (TDI) regulates many fully insured Texas health plans, but many employer plans are self-funded and are generally regulated under federal ERISA rules through the U.S. Department of Labor. TDI says only about 20% of Texans are covered by fully insured plans, and most people with employer coverage in Texas have self-funded plans. TDI also notes that it generally does not regulate Medicare, Medicaid, CHIP non-HMO plans, military plans, and many government or teacher plans.

Useful starting links: TDI: Get help with an insurance complaint · TDI: Independent review organization FAQ · HealthCare.gov: Internal appeals · U.S. Department of Labor ERISA health claim guide

Before you appeal, identify the type of denial. Different denials need different evidence.

A prior authorization denial happens before treatment, medication, surgery, imaging, or another service is approved. If your doctor requested approval and the insurer said no, this is usually a pre-service denial.

Many health plans require approval before certain services. TDI warns that if a plan requires approval and it is not obtained, the plan might not pay for the care. If you disagree with the plan’s decision, you may be able to appeal, file a complaint, or ask for external review depending on your plan and the denial type.

In Texas, many of these decisions are made through utilization review — the insurer’s process for deciding whether a proposed or provided service is medically necessary, appropriate, and covered under your plan. Prior authorization is usually one type of utilization review: a pre-service review that happens before care is approved. Utilization review can also happen while you are receiving care (concurrent review, such as during a hospital stay) or after a claim is submitted (retrospective review). Your denial letter may say prior authorization, preauthorization, adverse determination, or utilization review, but the practical question is often the same: who reviewed the care, what medical criteria did they use, and how do you challenge the decision?

For Texas plans subject to TDI utilization review rules, response timing can matter. Texas rules generally require certain HMO and preferred provider benefit plans using preauthorization to respond to ordinary preauthorization requests by the third calendar day after receiving the request, concurrent hospitalization requests within 24 hours, and post-stabilization or life-threatening condition requests within no more than one hour after receiving the request.

If your denial says prior authorization was missing, ask your provider’s billing office:

If the request was denied before care was provided, ask your doctor’s office to submit the appeal with supporting medical records.

A medical necessity denial means the insurer decided the service was not medically necessary or appropriate under the plan’s rules.

Texas law defines an “adverse determination” to include a determination that health care services are not medically necessary or appropriate, or are experimental or investigational. Texas law also requires adverse determination notices to include the principal reasons for the decision, the clinical basis for the decision, and information about complaint, appeal, and independent review rights.

These denials often require stronger medical evidence, such as:

Texas law includes some patient protections in the utilization review process. For example, utilization review criteria must be objective, clinically valid, compatible with established principles of health care, and flexible enough to allow deviations when justified.

Texas law also now says a utilization review agent may not use an automated decision system to make an adverse determination, wholly or partly. This means that the denial was made through human judgement, which might provide room for an argument for coverage that the reviewer did not consider. §4201.156 Use of Automated Decision System for Adverse Determinations

Some denials say the treatment is “experimental,” “investigational,” or “not proven.” These denials are different from ordinary billing denials because they often require medical literature, clinical studies, specialist opinions, or a physician statement explaining why the requested treatment is appropriate for your condition.

Texas independent review may be available for certain denials based on medical necessity, appropriateness, or experimental or investigational treatment. TDI says independent review organizations review denied services when the denial is based on medical necessity, appropriateness, or experimental or investigational grounds. TDI: Independent review organization FAQ

The section about external review has more information on Texas independent review.

Some denials are not really about whether the care was medically necessary. They may involve:

Texas and federal surprise billing protections may apply. TDI says surprise billing protections generally ban many surprise bills for emergencies, air ambulance services, care at in-network hospitals, and labs or imaging ordered by an in-network doctor. TDI also explains that your EOB should say whether you are protected from a surprise bill.

If the issue is a surprise bill, do not assume you owe the full out-of-network amount. Ask the insurer and provider whether state or federal surprise billing protections apply. CMS: No Surprises Act

Administrative denials can sometimes be fixed faster than medical necessity denials, but you should still watch the appeal deadline.

Common administrative issues include:

You can usually find the denial reason code and explanation in the Explanation of Benefits, often called an EOB. The EOB is not a bill. It explains what the insurer paid, what it denied, and what you may owe.

Look for:

Texas adverse determination notices should explain the principal reasons for the decision, the clinical basis, the criteria used, and the procedures for complaint, appeal, and independent review. If the denial letter is vague, ask for a clearer written explanation.

You can also call your provider’s billing office. Ask:

Denial code language can vary by payer, but these are common examples:

A phone call can help you understand what happened, but it is usually not enough to protect your rights. Ask for important information in writing or through the insurer portal.

When you call, ask:

For many ACA-covered plans, HealthCare.gov says you generally have 180 days after receiving the denial notice to file an internal appeal. It also says insurers must give written decisions within 15 days for prior authorization denials, 30 days for services already received, and 72 hours for urgent care situations. Always check your denial letter because your plan type may have different rules. HealthCare.gov: Internal appeals

For Texas plans subject to Texas utilization review appeal rules, a standard appeal decision must generally be issued as soon as practical but no later than 30 calendar days after receiving the appeal. Expedited appeals for certain urgent situations must generally be completed within one working day after the appeal is received and all necessary information is provided.

Before submitting an internal appeal, gather:

HealthCare.gov recommends keeping the EOB or denial documents, appeal request, doctor letter, and notes from phone calls, including dates, times, and names of people you spoke with.

If the denial is for medical necessity, ask your doctor to address:

For prescription drug denials, ask the prescribing doctor to address formulary alternatives, prior failed medications, side effects, contraindications, and why the requested medication is medically appropriate.

Internal appeals are usually the first formal step after a denied claim, denied prior authorization, or other adverse benefit decision.

Follow the appeal instructions in your denial letter or EOB. Include supporting records and a doctor’s letter when possible. If your care is urgent, clearly write that you are requesting an expedited appeal and include a doctor statement explaining the medical urgency.

For Texas utilization review appeals, Texas law requires appeal decisions to be made by a physician, and if specialty review is requested, the review must be completed by a doctor in the same or similar specialty within 15 working days. If the denial is upheld, the written notice must include the clinical basis for the decision, the specialty of the physician who made the decision, and the right to request review by an independent review organization.

When you file the appeal, include:

If your plan is self-funded through an employer or union, Texas insurance appeal rules may not control the process. TDI explains that self-funded plans are generally regulated by the U.S. Department of Labor under ERISA and are usually exempt from state insurance laws, though ERISA still requires an appeals process. U.S. Department of Labor ERISA health claim guide

Your denial letter should list the correct appeal address, fax number, or portal. If you know your insurer, these member-facing pages can help you find forms and submission instructions. Plan type matters — Medicare Advantage, Medicaid, CHIP, and employer self-funded plans may use different processes than the commercial links below.

A denial after your internal appeal can feel discouraging, but it may not be the end of the process. In Texas, some denials can be reviewed by an outside organization that is independent from your insurance company.

This is sometimes called Texas independent review or federal external review, depending on your plan. The basic idea is the same: someone outside the insurance company reviews whether the denial should stand.

In Texas, the state process is often called independent review, and the reviewer is an independent review organization, or IRO. TDI says external reviews are free for patients, and if you are unhappy with the result of the internal appeal — or if you are denied care for a life-threatening condition — you may be able to request external review. TDI also explains that the U.S. Department of Labor or U.S. Department of Health and Human Services oversees external review for many plans, while TDI can help with many fully insured plans.

For Texas IRO cases, fill out the LHL009 form and send it to your insurance company.

Texas health IRO timelines depend on the type of case. TDI says life-threatening cases are due within three days, certain prescription drug or IV infusion cases are due within three days, non-life-threatening preauthorization or concurrent review cases are due within 20 days, and retrospective review cases are due within 20 days. For health cases, the insurer or utilization review agent pays the IRO fees.

For plans using the federal external review process, HealthCare.gov says you generally must request external review within four months after receiving the final denial, standard external review decisions are due within 45 days, and expedited external review decisions are due within 72 hours or sooner depending on medical urgency. HealthCare.gov: External review

External review is not available for every denial. It is usually most relevant when the denial involves medical judgment, medical necessity, appropriateness, experimental or investigational treatment, or certain rescissions. If the issue is only a coding error, missing information, eligibility correction, or timely filing issue, the better path may be a corrected claim, provider billing escalation, or internal administrative appeal.

If you cannot resolve the issue with the insurer, TDI may be able to help — but only for plans it regulates.

TDI says you can file a complaint if your insurance card has “TDI” or “DOI” on it, or if the issue involves certain types of policies such as Medicare supplement, long-term care, disability, short-term, or limited-benefit coverage. TDI also says it generally cannot decide whether a service is medically necessary or force an insurer to pay a claim unless the insurer violated the law or the policy.

TDI’s complaint page says to include a copy of your insurance card and supporting documents, such as denial letters, bills, EOBs, and correspondence. TDI also provides a Help Line at 800-252-3439. TDI: Get help with an insurance complaint

If TDI does not regulate your plan, ask your insurer or employer: “Is this plan fully insured or self-funded, and who regulates the appeal process?” For self-funded employer plans, the U.S. Department of Labor may be the correct agency. For Medicare, Medicaid, CHIP, military, federal employee, teacher, or government plans, use the appeal instructions in the denial notice and plan materials.

Before submitting your Texas health insurance appeal, make sure you have:

A denial can feel like a door closing, but it is often just the first decision — not the final one. In Texas, the strongest appeal is usually specific, organized, and tied directly to the insurer’s stated reason for denial.

Take it one step at a time, keep copies of everything, and ask your doctor’s office for help when the denial depends on medical judgment.