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

A denied health insurance claim can feel frightening and exhausting — especially if you are sick, caring for someone you love, waiting for treatment, or staring at a bill you cannot afford.

The first thing to know is that a denial is not always the final answer. Many denials can be challenged. 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, prescription drug coverage, out-of-network care, surprise billing, or a plan rule.

This guide is for New York 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 a New York external appeal or federal external review may be available.

Before you begin, confirm what kind of plan you have. New York’s Department of Financial Services explains that HMOs and insurers subject to New York law — generally coverage that is not self-insured — must have both a grievance process for contractual denials and a utilization review process for medical denials. If your coverage is through a private-sector employer and is self-funded, ERISA may apply instead, and the U.S. Department of Labor’s appeal rules may be more important than New York insurance law.

Official sources: DFS: Health insurance rights and responsibilities · U.S. Department of Labor ERISA health claim guide

Health insurers use many different reasons to deny a claim or refuse to approve care. The label on your denial letter or EOB is the starting point for understanding what happened — and what kind of problem you are dealing with.

A prior authorization denial happens before treatment, medication, surgery, imaging, home care, rehab, or another service is approved. In New York, this is often part of utilization review, which is the plan’s process for deciding whether care is medically necessary, experimental or investigational, part of a clinical trial, or related to a rare disease treatment.

A related type is a missing prior authorization denial on a claim. That usually means the plan required approval before the service, but the insurer says no authorization was on file when the claim was processed — which is different from a pre-service denial where authorization was requested and explicitly denied.

For New York plans subject to New York utilization review rules, DFS says health plans generally must decide urgent utilization review requests within 72 hours, and pre-service requests generally within 3 business days for care you have not received yet. DFS: Health insurance rights and responsibilities

New York has an important protection for care that was already preauthorized. DFS says insurers may not deny coverage for a previously authorized service except in limited situations, such as the patient not being covered at the time of service, untimely claim submission, exhausted benefit limits, incomplete or materially inaccurate information, fraud or abuse concerns, or another insurer being primary. DFS Circular Letter 2021-04

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

For New York utilization review denials, adverse determination notices must explain the reasons for the decision, the clinical rationale if any, appeal instructions, external appeal instructions, and notice that the patient can request the clinical review criteria used to make the decision. For step therapy denials, the notice must also include the clinical review criteria and applicable alternative prescription drugs subject to the protocol. New York Insurance Law § 4903

If the insurer denied care without discussing the case with the provider who recommended it, New York law gives the provider an opportunity to request reconsideration. Except in retrospective reviews, that reconsideration must generally occur within one business day of the request. New York Insurance Law § 4903

Some denials say the treatment is “experimental,” “investigational,” “not proven,” related to a clinical trial, or not covered for a rare disease. These are utilization review denials based on whether the plan considers the treatment covered for your condition, not ordinary billing or eligibility problems.

A prescription drug denial may involve prior authorization, step therapy, quantity limits, a formulary exclusion, or a denial of a non-formulary drug.

A “drug denied” message can mean very different things. The drug may be excluded from the formulary. It may be covered only after prior authorization. The plan may require you to try another medication first under a step therapy protocol. It may say you did not try the required medication long enough. It may say the dose, quantity, or frequency is not covered. Or it may be treating the drug as not medically necessary, experimental, or investigational for your diagnosis.

A formulary exclusion or non-formulary drug denial means the plan’s drug list does not include the medication, or does not include it for your situation without an exception.

Large group coverage and grandfathered individual or small group coverage can work differently. DFS says those contracts may limit coverage to formulary drugs only, while many other individual and small group plans may cover non-formulary drugs when medically necessary.

A step therapy denial means the plan requires you to try one or more preferred medications before it will cover the medication your doctor prescribed. Patients often hear this described as “fail first.” The denial may mean you have not yet tried the required drug, tried it but not long enough, or tried it but the plan still will not cover the prescribed medication.

How fast the plan must decide an override request. After the prescriber submits supporting rationale and documentation, DFS says the plan must generally decide within 72 hours, or within 24 hours if your health is in serious jeopardy without the prescribed drug. If the plan misses those initial deadlines, New York law may treat the failure as a deemed override — meaning the step therapy protocol may be treated as approved for that initial request.

When an override may be appropriate. A prescriber’s override request should explain why one of the law’s grounds applies — for example, the required drug is contraindicated or likely harmful, expected to be ineffective for you, already tried without success, you are stable on the drug your doctor chose, or the required drug would create a serious barrier to your care or daily function.

The DFS FAQ also addresses formulary drugs vs. non-formulary drugs, urgent vs. standard requests, incomplete submissions, appeals, external review, and which plans the law covers. See the full DFS step therapy Q&A for those details.

Some New York denials are not about whether the care is medically necessary. They may involve whether the provider is in-network, whether there is an adequate in-network provider, or whether an out-of-network service is materially different from what the plan offered in-network.

An out-of-network service denial may mean the plan says an in-network option is available and not materially different from the out-of-network care requested. An out-of-network referral denial may mean the plan says an in-network provider can meet your needs and will not authorize a referral to an out-of-network specialist. A network adequacy issue may mean the plan does not have an in-network provider with the training and experience your condition requires. DFS: Health insurance rights · New York Insurance Law § 4904

Some denials or large bills are not really about medical necessity. They may involve surprise billing — when an out-of-network provider bills you more than your in-network cost-sharing (copay, coinsurance, or deductible). That extra amount is often called balance billing. Do not assume you owe the full out-of-network charge until you know whether surprise-bill protections apply.

New York’s surprise-bill rules generally apply if you have fully insured coverage subject to New York law (DFS says your ID card may say “fully insured”). If your employer or union self-funds your plan, New York’s surprise-bill law usually does not apply; federal No Surprises Act rules may apply instead for many plans issued or renewed on or after January 1, 2022. DFS: Surprise medical bills · CMS: No Surprises Act

When New York law applies, DFS says you are generally protected from balance billing on a qualifying surprise bill and only owe your in-network cost-sharing.

Surprise bill at an in-network hospital or ambulatory surgical center. This can happen when an out-of-network provider treats you at a participating (in-network) hospital or ambulatory surgical center. DFS says it may qualify as a surprise bill if:

It is not a surprise bill under DFS guidance if an in-network provider was available and you chose an out-of-network provider instead before you received care at the hospital or surgical center.

DFS says certain hospital-based services from out-of-network providers — such as emergency medicine, anesthesia, pathology, radiology, laboratory, neonatology, assistant surgeon, hospitalist, or intensivist care — are usually treated as surprise bills when provided at an in-network facility.

Surprise bill after a referral from an in-network doctor. DFS says this can include when you did not sign written consent acknowledging that the care was out-of-network and would not be covered by your plan, and:

Emergency services. For coverage subject to New York law, DFS says you generally only owe in-network cost-sharing for out-of-network emergency services in a hospital, including bills from doctors and the hospital and other providers who treat you in the emergency setting. That protection also generally includes inpatient care after an emergency room visit.

Administrative denials are usually about paperwork, billing, eligibility, or contract terms rather than whether the care itself was medically necessary.

Common administrative issues include:

New York has some state-specific rules for administrative and hospital claim denials. DFS says New York law restricts insurers from denying certain medically necessary inpatient hospital services, observation services, and emergency department services solely because the hospital failed to comply with certain administrative requirements. DFS also provides guidance about prompt payment rules, coding of claims, and limits on retrospective denials of preauthorized services. DFS Circular Letter 2021-04

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:

New York health plans subject to New York law must give members information about benefits, limits, exclusions, the definition of medical necessity, what services require prior authorization, how to request authorization, grievance procedures, utilization review procedures, and external appeal rights. They must also provide certain information upon request, including drug formularies, how experimental or investigational decisions are made, clinical review criteria for a particular disease, provider network status, and approximate out-of-network payment amounts. DFS: Health insurance rights and responsibilities

If the denial letter is vague, ask for a clearer written explanation. Ask specifically for the plan language, clinical review criteria, medical policy, coding rule, formulary rule, or step therapy protocol the insurer relied on.

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 New York plans subject to New York rules, DFS says you generally have 180 days to send a grievance from the date of denial or decision, and 180 days to appeal a utilization review denial from the date of denial. HealthCare.gov also says that for many ACA-covered plans, you must file an internal appeal within 180 days of receiving notice that your claim was denied. DFS: Health insurance rights · HealthCare.gov: Internal appeals

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. HealthCare.gov: Internal appeals

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, step therapy concerns, and why the requested medication is medically appropriate.

For New York out-of-network service denials, your doctor may need to explain why the out-of-network service is materially different and provide medical evidence that it is likely to be more clinically beneficial without increasing risk. For out-of-network referral denials, your doctor may need to explain why the plan’s in-network provider does not have the appropriate training and experience for your particular health care needs. DFS: Health insurance rights · New York Insurance Law § 4904

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

In New York, it helps to know whether you are filing a grievance or a utilization review appeal.

A grievance is generally used when a benefit is denied for reasons other than medical necessity, experimental or investigational treatment, clinical trial, or rare disease treatment. Examples include a contractual exclusion, denied referral, or other plan determination.

A utilization review appeal is generally used when the plan denies care because it says the service is not medically necessary, experimental or investigational, part of a clinical trial, or related to a rare disease treatment.

For grievances, DFS says plans must decide urgent grievances within 72 hours, pre-service grievances within 15 days, post-service grievances within 30 days, and other grievances within 60 days. For utilization review appeals, DFS says plans must decide urgent appeals within 72 hours, pre-service appeals within 30 days if the plan has one level of appeal or 15 days if it has two levels, and post-service appeals within 60 days if the plan has one level or 30 days if it has two levels. DFS: Health insurance rights and responsibilities

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

If the request was denied before care was provided, ask your doctor’s office to submit the utilization review appeal with supporting medical records. If the plan needs more information, DFS says it must ask within 3 business days for many pre-service requests, and you and your provider generally have 45 days to submit it.

Medical necessity and experimental denials usually need strong medical evidence, such as:

Experimental, investigational, clinical trial, and rare disease denials often need medical literature, specialist opinions, clinical studies, and a clear doctor statement explaining why the requested treatment is appropriate for your condition.

If the insurer denied care without discussing the case with the provider who recommended it, ask whether the provider requested reconsideration. Except in retrospective reviews, New York law generally requires that reconsideration within one business day of the request. New York Insurance Law § 4903

Start by asking the insurer and pharmacy benefit manager exactly what kind of drug denial you received. A formulary exception, step therapy override, medical necessity appeal, and grievance may have different rules and deadlines.

For many New York individual and small group plans, a non-formulary drug denial may be challenged through a formulary exception process. DFS explains that standard formulary exception requests generally must be decided within 72 hours, and expedited requests must be decided within 24 hours when the patient’s health, life, or ability to regain maximum function is at risk, or when the patient is already being treated with the non-formulary drug. If the contract does not cover non-formulary drugs, the issue may be handled as a grievance instead of utilization review. DFS: Step therapy Q&A

For a step therapy denial, you, your designee, or your health care professional can request a step therapy protocol override before or as part of the appeal process. The strongest request usually comes from the prescribing clinician and should include supporting medical rationale and documentation.

Under New York law, a step therapy override should be granted when the supporting documentation shows one or more of the following:

For a standard step therapy override request, the health plan must make a determination within 72 hours after receiving supporting rationale and documentation from a health care professional. For an urgent request, the plan must decide within 24 hours if the patient’s health is in serious jeopardy without the prescribed drug.

New York law says that if the utilization review agent fails to meet the initial step therapy override timeframes, that failure is deemed an override of the step therapy protocol. DFS clarifies that this deemed-override rule applies to the initial step therapy override timeframes, not every other utilization review deadline. If the override is approved, the plan must authorize immediate coverage and honor the approval for up to 12 months or the treatment duration in evidence-based guidelines, whichever is less. New York Insurance Law § 4903 · DFS: Step therapy Q&A

If the step therapy override request is missing documentation, DFS sets specific request-and-response timelines for urgent, non-urgent, and retrospective cases. DFS: Step therapy Q&A

For prescription drug appeals, ask the prescribing doctor to be specific. A short note saying “patient needs this medication” may not be enough. Ask the doctor to address your diagnosis, the exact medication requested, formulary alternatives already tried, side effects or contraindications, stability on the current drug, and whether delay could seriously jeopardize your health.

If the situation is urgent, ask the doctor to say that clearly and explain why waiting could seriously jeopardize your health or ability to regain maximum function. DFS says if a physician with knowledge of the patient’s medical condition determines the claim involves urgent care, the plan must process the claim as urgent.

If the plan denies a step therapy override, the denial notice should include appeal instructions, external appeal information, the clinical review criteria relied on, and the applicable alternative prescription drugs in the step therapy protocol. Ask for the full step therapy protocol, the formulary alternatives the plan says you must try, the reason the prescriber’s documentation was not enough, the appeal deadline, and whether expedited review is available.

New York gives patients a right to request out-of-network authorization when the plan does not have an in-network provider with the appropriate training and experience to meet the patient’s health care needs. If approved, the patient should not pay more than the in-network cost-sharing.

If the plan denies an out-of-network service because it says an in-network service is not materially different, your doctor may need to submit a written statement explaining why the out-of-network service is materially different and provide two documents of medical evidence showing that the out-of-network service is likely to be more clinically beneficial and does not increase risk.

If the plan denies an out-of-network referral, your doctor may need to explain that the in-network providers recommended by the plan do not have the appropriate training and experience for your specific health care needs, and recommend an out-of-network provider who does. DFS: Health insurance rights · New York Insurance Law § 4904

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.

New York law says expedited and standard utilization review appeals must be conducted by clinical peer reviewers, and the appeal reviewer must be different from the clinical peer reviewer who made the original adverse determination. New York law also says that if the utilization review agent fails to make an appeal determination within the applicable timeframe, the adverse determination is deemed reversed. New York Insurance Law § 4904

When you file the appeal, include:

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

If your plan is self-funded through an employer or union, New York insurance appeal rules may not control the process. Review your Summary Plan Description and follow the ERISA appeal procedure. The Department of Labor says denied workplace health plan claims must receive written notice explaining why the claim was denied and how to appeal, and participants generally have at least 180 days to request a full and fair review. U.S. Department of Labor ERISA health claim guide

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

New York calls this an External Appeal. DFS says you may request external appeal when an insurer or HMO denies health care services as not medically necessary, experimental or investigational, or out-of-network. External appeal may also be available when a health plan upholds a denial based on clinical trial, rare disease treatment, out-of-network service, or out-of-network referral. For some external appeals, DFS requires a physician attestation, and for experimental or investigational, clinical trial, out-of-network service, or out-of-network referral denials, the physician generally must be licensed and board-certified or board-eligible in the appropriate specialty area.

The deadline is important. DFS says you must send the external appeal application within 4 months from the date of the final adverse determination from your internal appeal, or from the date the internal appeal process is waived. If your plan offers a second-level internal appeal, you do not have to file it — and if you do file it, the 4-month external appeal deadline still runs from the first appeal decision. DFS: File an external appeal

DFS says health plans may charge patients a $25 fee per external appeal, up to $75 in a plan year, but the fee is waived for certain patients, including Medicaid or Child Health Plus patients and people for whom the fee would be a hardship. The fee is returned if the external appeal agent overturns the denial.

For expedited external appeals, DFS says a patient may request an expedited internal and external appeal at the same time in qualifying urgent situations. Expedited external appeal decisions are made within 72 hours, or 24 hours for a non-formulary drug. Standard external appeal decisions are made within 30 days, or 72 hours for a formulary exception. If a step therapy override or formulary exception was denied and the medication is non-formulary, expedited external appeal may be especially important.

For plans using the federal external review process instead of New York’s process, HealthCare.gov says standard external reviews are decided no later than 45 days after the request is received, and expedited external reviews are decided as soon as possible, no later than 72 hours depending on medical urgency. HealthCare.gov: External review

If you cannot resolve the issue with the insurer, you may be able to file a complaint with New York DFS. DFS says consumers can use its online Consumer Complaint application to file a complaint about an insurance company, check the status of a complaint, or add information later. DFS: File a complaint

DFS also says its hotline is staffed Monday through Friday from 8:30 AM to 4:30 PM. The hotline number is 800-342-3736. DFS: Contact us

If you are overwhelmed, hospitalized, caring for a child, or just need another person to help keep track of documents and deadlines, ask the insurer how to authorize a representative or designee. This can allow someone you trust to help with a preauthorization, complaint, grievance, or appeal.

Before submitting your New York 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 New York, 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. Ask your doctor’s office for help when the denial depends on medical judgment. And if the care is urgent, say that clearly and repeatedly — in the appeal, on the phone, and in any external appeal request.