A Playbook for Fighting Insurance Denials

First, breathe. A denial is a starting point, not a verdict.

Here is the thing nobody tells you at the moment that envelope arrives: insurers deny things routinely, and a large share of denials get overturned on appeal - often because the first decision was made by an algorithm or a reviewer who never saw your child's full story. The denial is not a judgment on your child's needs. It is the opening position in a negotiation you are allowed to win.

So put the letter down for an hour. Then pick it back up like a detective, not a defendant. Your job is not to prove you are a good parent - everyone reading this already knows that. Your job is to match your child's documented needs to the plan's own written rules, and to do it before the clock runs out.

Decode the denial letter

Every denial has to tell you why, and the 'why' is usually one of a few things: 'not medically necessary,' 'experimental or investigational,' 'out of network,' 'no prior authorization,' 'benefit limit reached,' or a plain paperwork error like a wrong billing code. The reason dictates your whole strategy, so find it first.

A denial is not the same as an Explanation of Benefits (EOB). An EOB shows what was paid and what you may owe; a denial (sometimes called an adverse benefit determination) is a formal decision you have the right to appeal. If you only got an EOB and you are confused, call and ask directly: 'Is this a denial I can appeal, and what is my deadline?'

Write down the deadline the moment you find it, and note that some services have two clocks - one to appeal at all, and an earlier, tighter one to keep an existing service running while you appeal. When in doubt, act on the earliest date on the page.

Know which rulebook you're under - it changes everything

Not all insurance plays by the same rules, and this is the single most useful thing to figure out early. A plan you buy through the marketplace or a fully-insured employer plan follows ACA rules and your state's insurance department. A large employer's self-funded plan follows federal ERISA law and is overseen by the U.S. Department of Labor, not your state. Medicaid and Medicaid waiver services follow federal and state Medicaid rules, with a fair-hearing process instead of a commercial external review.

Why does this matter? Because it tells you who your appeal goes to, what deadlines apply, and who to call when you get stuck. If you are not sure which type you have, ask your HR benefits contact or read the plan's Summary Plan Description - it will say whether the plan is 'self-funded.' Many families with a child on Medicaid have two layers (private plan plus Medicaid as secondary), which can mean two appeal paths for the same item.

The Letter of Medical Necessity is your single best weapon

Most denials for kids - a stander, an AAC device, orthotics, extra therapy visits, a wheelchair - come down to 'medical necessity.' The counter to that is a strong Letter of Medical Necessity (LMN) from the provider who ordered it. A weak LMN says the child 'would benefit.' A strong one names the diagnosis, describes specific function the item restores or prevents from declining, cites the evaluation, explains why cheaper alternatives were tried or won't work, and - crucially - mirrors the language in the plan's own coverage criteria.

You do not have to write it, but you can make it dramatically better. Send your provider the exact denial reason and, if you have it, the plan's coverage policy. Ask them to address each criterion point by point. A therapist or physician who knows what the reviewer is looking for can turn a form-letter LMN into an airtight one in twenty minutes.

Keep peer-reviewed backup handy for the big-ticket items. Professional guidelines and studies supporting AAC devices, standers, or a child's specific therapy can rebut an 'experimental' or 'not necessary' label. Your provider or the equipment vendor often has this on file already.

Ask for a peer-to-peer review - the fast lane

Before you write a formal appeal, ask whether your child's doctor can do a 'peer-to-peer' - a direct phone call between the prescribing provider and the insurer's medical reviewer. This can overturn a denial in days instead of weeks, because it lets a real clinician explain nuance a checklist missed.

You can't make this call yourself, but you can trigger it. Ask your provider's office to request the peer-to-peer, and give them the denial details so they are ready. If it works, get the approval in writing. If it doesn't, you have lost nothing and you move to the written appeal with a clearer picture of the insurer's objection.

Internal appeal, then external review

The first formal step on a commercial plan is the internal appeal - you asking the insurer to look again. On ACA and employer plans you generally have up to 180 days from the denial to file, and the plan must decide within set windows (faster for services you haven't received yet, and within about 72 hours when it is urgent). Put your argument in writing, attach the LMN and records, quote the plan's own criteria, and keep a dated copy of everything.

If the internal appeal is denied, you have the right to an external review by an independent third party who does not work for your insurer. This is powerful: the reviewer's decision is legally binding on the plan. Standard external reviews are generally decided within about 45 days, and expedited ones - for urgent situations - within roughly 72 hours. The federal baseline gives you about four months after the final internal denial to request it, though some states set their own, sometimes shorter, windows, so check the deadline on your denial.

Persistence matters more than eloquence here. Many families win at the external stage precisely because an outside clinician finally reads the whole file. If your child's need is time-sensitive - a surgery, a device they cannot function without - say the word 'expedited' explicitly and have the provider confirm the urgency in writing.

Medicaid and EPSDT: a stronger standard for kids

If your child has Medicaid (including through a waiver), you have a powerful rule on your side called EPSDT - Early and Periodic Screening, Diagnostic and Treatment. In plain terms: Medicaid must cover any service that is medically necessary to treat a condition in a child under 21, even if that service isn't normally covered for adults and even if there's a benefit limit that would otherwise apply. A visit cap or a 'not a covered benefit' denial for an adult may simply not hold up for a child.

When Medicaid denies, reduces, or terminates a service, you have the right to a fair hearing. States must give you a reasonable time - up to 90 days from the notice - to request one. The request is usually simple: contact your state Medicaid agency by the method on the notice, give your name and the notice, and state clearly that you want a fair hearing. If English isn't your first language or the process feels overwhelming, you can ask for help and bring someone with you.

If the denial reduces or ends a service your child is already receiving, act immediately on 'aid paid pending' (see the callout). And remember EPSDT the whole way through - a well-placed sentence like 'this service is medically necessary for my child under EPSDT' reframes the entire conversation.

Keep a paper trail - and know when to call in reinforcements

Start a simple log the day the denial arrives: every call, the date, who you spoke to, and what they said. Save every letter. This record is your leverage - insurers behave differently when they know you are documenting. A cheap folder or a single phone note is enough.

You do not have to do this alone, and you rarely need a lawyer to start. Free help exists in every state: your State Health Insurance Assistance and the state insurance department (for commercial plans) or Medicaid ombudsman (for Medicaid) can intervene; Protection and Advocacy (P&A) agencies and legal aid handle disability-related denials at no cost; and disability parent groups have often fought - and won - the exact denial you're facing. For self-funded employer plans, the U.S. Department of Labor's benefits advisors can help.

Bring in these allies sooner rather than later if the item is expensive, the denial is repeated, or the deadline is close. A single call from an advocate or the state insurance department can move a file that sat for weeks.