How to Appeal a Denied Claim in New York

Which denial are you holding

A prior authorization denial arrives before anything is delivered. The plan is refusing to approve an MRI, a surgery, a specialty drug, a rehab stay. No service has happened and no bill exists yet, so the argument is about coverage of future care.

A payment denial arrives after the fact. The visit or procedure happened, the provider submitted the claim, and the plan refused it or paid less than the provider expected. Most people meet this one on an explanation of benefits, weeks before the provider’s bill catches up.

The difference decides who moves first. Before care, the paperwork and the clinical reasoning sit in your prescriber’s office, so the fastest pressure point is that office. After care, the balance is in your name, so you file, and you need the itemized bill lined up next to the explanation of benefits before you write a word.

Get the denial in writing before you argue with it

A verbal denial cannot be appealed cleanly, because there is nothing to quote back. The written denial tells you three things you cannot get any other way: the exact reason, the criteria the reviewer applied, and the deadline that governs your next step.

Say this to the plan:

“Please send me the denial in writing, with the specific reason for the denial, the clinical criteria used, and the deadline and instructions for filing an appeal.”

It works because each item is a discrete document request rather than an opinion, and because it makes the reviewer’s own standard part of the record. If the denial rests on criteria you have never seen, ask for those criteria by name.

Ask for the same thing in your provider’s language: request that the practice send you a copy of what it submitted for authorization. A denial often turns on a missing chart note rather than on medical disagreement.

The peer-to-peer review is the fastest step

A peer-to-peer review is a direct conversation between your treating doctor and the plan’s reviewing physician. It skips the paperwork queue and puts the clinical question in front of someone qualified to change the answer that day.

You cannot make this call yourself. What you can do is ask for it precisely, at the office that has to place it:

“I’m asking the practice to request a peer-to-peer review with the plan’s medical reviewer on this denial. Who in your office handles authorizations, and when will the request go in?”

The second sentence is the working part. Naming the person and the date turns a request into a task with an owner, and authorization work in a busy practice is otherwise the thing that slides.

The weak spot here is honest: peer-to-peer depends entirely on your doctor’s office having the time and the will. If the practice stalls, your fallback is the written internal appeal, which you can file yourself.

The internal appeal is the plan reviewing its own decision

An internal appeal goes back to the insurer that denied you, which is why documentation matters more than argument. The reviewer reading it did not attend your appointment and knows only what is in the file.

Include, in one package:

• Member ID, claim or authorization number, dates of service
• The denial letter itself, with the stated reason quoted in your cover letter
• A letter of medical necessity from the prescribing clinician
• The chart notes, test results or imaging reports that support it
• A one-paragraph statement of what you are asking the plan to do

Send it in a way that produces a receipt, and ask for written confirmation that the appeal was received and logged. Then say:

“Please confirm in writing that my appeal was received, and tell me the date by which I will get a decision.”

A confirmed receipt date is what you cite later if the plan says nothing arrived.

New York’s external appeal goes outside the plan

An external appeal moves the question to an independent reviewer who is not employed by your insurer. That change of audience is the entire point: the same file gets read by someone with no financial interest in the outcome.

In New York, the insurance side of this is the Department of Financial Services, which handles consumer complaints against health plans and runs the state’s independent dispute resolution process for billing disputes between providers and insurers.

The plan has to tell you when this route opens and how to use it, so ask directly:

“Is this denial eligible for external appeal in New York, and what is the deadline and the form?”

Timing is the part people lose on. The deadlines for internal and external appeals are limited and specific, they are stated in your denial letter, and no one will remind you. If the letter is unclear about dates, call and ask for them in writing.

Keep a dated log, because the plan keeps one

The insurer records every call. If you do not, then any disagreement about what was said is settled by the only party with a transcript.

After every call, write down: date, time, the representative’s name, the reference or call number, what you asked, what you were told, and what was promised by when. Then send a short email or letter to the plan repeating it: “Confirming our call today, [date], reference [number]: you told me X.” An unanswered written summary becomes part of the record.

This matters most in the boring cases. Appeals are rarely lost on the medicine. They are lost on a form that was mailed to an old address, an authorization that expired while a referral was pending, or a call where someone said it was handled and no one wrote it down.

Where an appeal is the wrong tool

You are uninsured. There is no plan to appeal to. The route is hospital financial assistance, where New York law bars a hospital from charging out-of-pocket costs to uninsured patients at or below 200% of the federal poverty level, and caps charges at 10% of the Medicaid rate between 201% and 300%.

The charge came from an out-of-network clinician at an in-network hospital. That is a surprise bill under federal and New York law, and the dispute belongs between the provider and the plan, not on your appeal form.

The service is excluded from the plan entirely. An appeal argues that a covered benefit was wrongly refused. If the benefit does not exist in the contract, the question becomes an exception request now, or a different plan at open enrollment, which runs from November 1, 2026 to January 31, 2027 in New York.

The bill already went to an agency. Appeal the claim and handle the collection at the same time. The two processes do not wait for each other, and what happens once a bill is in collections has its own rules.