When the letter saying no arrives, many people put it in a drawer and assume that's the end. It isn't. The law gives you two chances, and the second one isn't decided by your insurer.
First: make them tell you why, in writing
Your plan is required to tell you the exact reason for the denial and how to appeal it, in writing. If they told you by phone, ask for the letter. Without that paper you don't know what you're fighting.
These are the most common reasons, and each one is fought differently:
| Reason | What it means |
|---|---|
| Not medically necessary | The plan sees no clinical justification. It's the one most often won, and it's won with your doctor's letter. |
| Prior authorization was missing | The service needed approval beforehand and nobody requested it. Sometimes it's fixed by requesting it retroactively. |
| Out of network | The provider has no agreement with your plan. If there was no other one available nearby, that's an argument. |
| Not a covered benefit | The hardest one, because it depends on what your policy says. Even so, read it before giving up. |
| Coding error | The office entered the wrong code. It isn't even a real denial. |
Many denials collapse with one phone call
Before mounting a formal appeal, call. A good share of what arrives as a denial is an administrative error: a wrong code, a wrong date, a mistyped member number.
Call the office first to confirm how they billed, then the insurer. Write down the date, who you spoke to and the call reference number. That's worth a lot if you end up appealing.
The internal appeal: you have 180 days
This is the first round: you ask your own insurer to review its decision. The deadline is 180 days from receiving the denial, and it's generous on purpose — but don't let it run out.
Once filed, the plan has to answer you within these deadlines:
| Your situation | Response deadline |
|---|---|
| It's urgent and you're in treatment | 72 hours |
| It's a service you haven't received yet | 30 days |
| It's a service you already received | 60 days |
When waiting would put your health at risk, you can ask for an expedited review and also file the internal and external appeals at the same time. You don't have to wait for one to finish to start the other.
External review: here your plan no longer decides
If the insurer says no again, you have the right to have an independent reviewer, outside the insurerlook at the case. Depending on your state, it's run by the state or by the federal government.
Two things worth knowing:
The first: you normally have 4 months from the final denial to request it. The second, and this is the important one: the external reviewer's decision is binding on the insurer. If the reviewer rules in your favor, the plan has to cover it. It isn't an opinion.
If your case is urgent, there's an expedited external review too.
What makes an appeal win
Almost always the same thing: a letter from your doctor explaining why that service is necessary in your specific case. Not a generic form — a letter that speaks to your history, what has already been tried, and what happens if it isn't done.
Add a copy of the denial, your relevant records and the log of your calls. Send it all together and keep a copy of what you sent and the date.
This is where I come in
Selling the policy is the easy part. What's really needed is someone there when the system tells you no — and that is exactly the moment when nobody showed up for my family. That's why I came into this industry.
If you're my client and something gets denied, here's what I do with you: we read the letter together and find the real reason, we call the insurer to rule out a billing error, I help you request the letter of medical necessity from your doctor and put the package together, and I keep track of the deadlines so none of them slip.
And here's what I cannot do, so there are no surprises: I'm not a lawyer and I don't represent anyone legally, and the decision isn't in my hands — the insurer makes it first and the independent reviewer after. What I can do is make sure you don't face a process in a language that isn't yours on your own.
Were you denied something and don't know where to start?
Send me the letter and we'll read it together. I'll tell you what reason they're giving and what can be done. Free of charge.
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Sources
General information, not legal, tax or immigration advice. Deadlines can vary by plan and by state; the ones on your denial letter are the ones that govern. For your specific case, write to me. Omar Mendoza, licensed agent — NPN 21726482.