Medically reviewed by Kevin Wandler, MD, Chief Medical Advisor
Hearing that your insurance has denied coverage for rehab can feel like a door slamming shut, especially when you’ve finally decided to get help. Take a breath. A denial is often the start of a process, not the final word. Many denials can be reconsidered, and there are clear steps you or your treatment provider can take.
This guide explains how to read a denial, how appeals work, and how to stay safe while you sort things out. This is general information, not legal advice.
First, Keep Safety in Focus
Coverage questions should never put someone’s health at risk. If you or a loved one has been drinking heavily or using benzodiazepines regularly, don’t stop suddenly while waiting on insurance. Withdrawal from these substances can be life-threatening and needs medical supervision. If someone is having a seizure, is hard to wake, or has trouble breathing, call 911. If someone is thinking about suicide, call or text 988.
Read the Denial Letter Carefully
Your plan must explain why it denied coverage and how to appeal. Look for:
- The specific reason for the denial
- The criteria or plan rule the decision was based on
- Deadlines for filing an appeal
- Instructions for urgent or expedited appeals
- Information about external review
You generally have the right to request, free of charge, copies of documents relevant to your claim, including the criteria the plan used. Write down the date you received the letter and keep it somewhere safe, since appeal deadlines usually run from the date of the notice. If anything in the letter is unclear, call the plan and ask them to explain it, and note who you spoke with.
Common Reasons for Denial
- Not medically necessary: the plan believes a lower level of care would be enough.
- Missing prior authorization: the required approval wasn’t requested or completed.
- Out of network: the facility isn’t in your plan’s network, and your plan has limited or no out-of-network benefits.
- Benefit exclusion: the plan says the service isn’t covered.
- Administrative errors: incorrect codes, missing information or eligibility mix-ups.
Administrative errors are often simpler to fix. A quick call to confirm what’s missing can sometimes resolve them without a formal appeal.
Request a Peer-to-Peer Review
When a denial is based on medical necessity, a clinician involved in your care can often ask to speak directly with the plan’s reviewing clinician. This conversation, called a peer-to-peer review, gives the treatment team a chance to explain details that may not have come through in the paperwork. It’s often a quick way to get a decision reconsidered.
File an Internal Appeal
If a denial stands, you can ask the plan to formally reconsider. For most plans, you have 180 days from the date of the denial notice to file an internal appeal, but always follow the deadline in your letter. A strong appeal often includes:
- A letter from you explaining why you’re appealing
- A letter of medical necessity from a treating clinician
- Relevant records, such as assessments, prior treatment history and medical concerns
- A response to the specific criteria the plan cited
If your situation is urgent, ask for an expedited appeal. Plans generally must decide urgent appeals much faster than standard ones.
Ask for an External Review
If the plan upholds its denial, you may be able to request an external review by an independent reviewer who doesn’t work for your insurer. For many plans, the external reviewer’s decision is binding on the insurer. In Texas, state-regulated plans use an independent review process overseen by the Texas Department of Insurance, while many employer plans follow a federal process. Your denial letter should explain which applies. In urgent cases, you may be able to request an expedited external review at the same time as an internal appeal.
Consider Whether Parity Applies
Federal mental health parity law requires many plans to apply limits on substance use and mental health care that are no more restrictive than limits on comparable medical care. If the plan’s approval standards for addiction treatment seem stricter than those for similar medical services, mention it in your appeal and ask the plan to explain the difference.
Keep Moving Forward While You Appeal
Appeals take time, and recovery shouldn’t have to wait. Ask whether another level of care would be approved in the meantime. For some people, a partial hospitalization program or virtual intensive outpatient program offers meaningful support while an appeal is pending. If you need medically supervised withdrawal, ask specifically about detox services. You can also explore options for paying without insurance.
Keep a simple log of every call, including dates, names and reference numbers, and keep copies of everything you send. If you’re helping a loved one, make sure they’ve signed any authorization the plan requires so you can speak on their behalf.
Frequently Asked Questions
Can my treatment provider appeal for me?
Often, yes. Providers commonly request peer-to-peer reviews and can file appeals with your written authorization.
How long does an appeal take?
It depends on the plan and whether the appeal is urgent. Expedited appeals are decided much faster than standard ones, and your denial letter describes the timelines that apply.
What if my appeal and external review are both denied?
You may be able to file a complaint with the regulator that oversees your plan and explore other levels of care or payment options.
Should I start treatment while my appeal is pending?
That depends on your health needs and financial situation. Talk with the treatment team about the risks of waiting and about what you might owe if the appeal isn’t successful.
We’re Here to Help
If you’re dealing with a denial or want to avoid one, our admissions team can verify your benefits and explain your options. Visit our insurance options page, contact us, or call (469) 546-9303 24/7.