Health Plan Claim Denial and Appeal

The structured process for challenging a refusal to cover treatment - internal appeal first, then in most cases an independent external review.

Looking for a lawyer rather than a definition? Skip to the state-by-state list of Health Care law firms.

What it means

A denial is not a final answer. Health coverage in the United States is subject to a layered appeal structure, and a substantial share of denials are reversed when challenged. The first requirement is to identify what the denial actually says: a claim refused because a code was wrong, a referral was missing or the provider was out of network is a different problem from one refused as not medically necessary or as investigational, and only the second is really a coverage dispute.

The general shape is an internal appeal to the plan itself, followed - for most plans - by an external review by an independent organization whose decision binds the plan. Federal law requires plans to give notice of an adverse determination that states the specific reason and the plan provision relied on, to provide free access on request to the documents and internal rules used to decide, and to offer an expedited route where waiting would seriously jeopardize health. State law adds its own external review systems for insured plans regulated by the state.

The single most consequential thing to know is that the internal appeal is where the record is built. For an employer-sponsored plan governed by ERISA, a court reviewing the decision later may be confined to the material that was before the plan when it decided, and may review a discretionary decision only for abuse of discretion rather than deciding the question afresh. Evidence not submitted during the internal appeal may simply never be considered. That is why the appeal should carry the treating clinician's reasoning in writing addressed to the plan's own stated criteria, the relevant records, and any applicable professional guidelines - not merely a request to reconsider.

Which rules apply depends on the plan type, and most people do not know their own. An individually purchased or fully insured employer plan is regulated by the state and by the federal Affordable Care Act appeal rules. A self-funded employer plan is governed by ERISA and generally not by state insurance law, including state external review. Government programs have their own systems entirely - Medicare has a multi-level appeal ladder ending in federal court, Medicaid provides a fair hearing, and plans purchased through the marketplace have marketplace-specific routes. Separately, federal law now restricts surprise billing for many out-of-network emergency and facility-based services and provides its own dispute process, which is a different track from a coverage appeal.

Every stage of this runs on deadlines that are short and unforgiving, and they are set by the plan document, by regulation and by the program involved. Read the denial letter for the specific periods that apply to you and calendar them the day it arrives; a right lost to a missed appeal period is very difficult to recover.

Where this comes from

When people hire a lawyer for this

Do the internal appeal properly even if you intend to get help later, because for an employer plan it may be the only chance to put evidence on the record. Ask the plan in writing for the complete claim file, the specific criteria applied and the credentials of the reviewer - you are generally entitled to these free of charge, and a denial that cannot cite its own criterion is a weak one. Get your treating clinician to write to the stated criterion rather than in general terms, and ask about a peer-to-peer review. Where health is at immediate risk, ask explicitly for the expedited process. Free help exists: most states operate a consumer assistance program or health insurance ombudsman, and hospital patient advocates and legal aid programs handle denials routinely. A lawyer is worth engaging where the sum is large, where the treatment is urgent and the plan is unmoved, or where you are being told your plan is exempt from your state's external review.

Worried about the cost? A lawyer can be hired for one part of a case only (limited-scope representation), may be paid from what a claim recovers (contingency fee), or may be free through a pro bono program or legal aid; a court can also waive its own filing fees.

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Related terms

Other entries in the same area of law, each written from the same primary sources.

• Advance Directive and Living WillDocuments recording medical treatment wishes, and naming who decides, if a person becomes unable to decide for themselves.
• Civil Commitment (Involuntary Psychiatric Hospitalization)The state-law process by which a person can be held and treated in a psychiatric facility against their will - the emergency hold, the court hearing, the standard of dangerousness, and the constitutional limits on all three.
• COBRA Continuation CoverageThe federal right to stay on an employer's group health plan after leaving the job, losing hours, divorcing, or a covered employee's death - at the full premium, for a limited period, if elected in time.
• Elder Abuse and Adult Protective ServicesWhat the law counts as abuse, neglect or exploitation of an older or dependent adult, who must report it, what Adult Protective Services can and cannot do, and the civil and criminal remedies that follow.
• EMTALA (Emergency Medical Treatment and Labor Act)The federal law that requires a hospital emergency department to screen and stabilize anyone who comes through the door, regardless of insurance or ability to pay, before it may transfer or discharge them.
• Fair Hearing (Public Benefits)The hearing you are entitled to before benefits such as Medicaid or SNAP are cut off or denied - a constitutional right, not an agency courtesy.
• False Claims Act and Health Care Whistleblowers (Qui Tam)The federal statute under which false billing to Medicare or Medicaid carries treble damages and per-claim penalties, and the qui tam procedure that lets a private person sue in the government's name and share the recovery.
• HIPAA and Your Medical RecordsThe federal privacy rules for health information - including a right to get a copy of your own records, which is narrower and more practical than the privacy rule people usually mean.
• Hospital Financial Assistance and Medical DebtThe federal rules that make a nonprofit hospital publish a financial assistance policy, limit what it may charge eligible patients, and restrict how it collects - and what a patient with a medical bill can do with them.
• Informed ConsentA patient's agreement to treatment after being told the risks and alternatives - and a signed form is evidence that the conversation happened, not proof that it was adequate.
• Life Insurance Claim DenialThe common reasons life insurers deny or delay death benefits, how the rules differ for employer group policies under ERISA, and what beneficiaries can do about disputes over who gets paid.
• Medicaid Estate RecoveryThe federal requirement that a state recover the cost of long-term care Medicaid paid for from the estate of the person who received it after they die - the reason the family home is at stake, and the exemptions and hardship rules that limit it.
• Medical Malpractice and the Standard of CareA negligence claim against a healthcare provider, judged against what a reasonably competent practitioner in the same field would have done.
• Medicare AppealsThe five-level process for challenging a Medicare denial - of a claim, a service, a hospital discharge, or a nursing-home stay - with a different deadline at each level and a fast track when the care is about to stop.
• Mental Health ParityThe federal requirement that a health plan covering mental-health or substance-use treatment cover it on terms no more restrictive than its medical and surgical coverage - in dollars, in visit limits, and in the prior-authorization and network rules that are harder to see.
• Nursing Home Residents' RightsThe federal bill of rights every Medicare- or Medicaid-certified nursing home must honor - dignity, choice, freedom from restraints and abuse, notice before transfer or discharge - and the inspection and complaint system that enforces it.
• Patient AbandonmentWhen a physician or provider may end a relationship with a patient, what notice and transition care they must give, and when ending it - or refusing to start it - becomes actionable.
• Psychotherapist-Patient PrivilegeThe rule that keeps what a patient tells a therapist out of court - who it covers, who holds it, how it is waived, and the duty-to-warn and child-abuse exceptions that override it.
• Refusing Medical TreatmentThe right of a competent adult to refuse any treatment, including one that keeps them alive; what happens when the patient cannot decide; and the limits the law places on it.
• Social Security Disability Appeal (SSDI and SSI)The four-step process for challenging a denied disability claim - and most claims are denied at the first step.
• Stark Law and the Anti-Kickback StatuteThe two federal laws that govern financial relationships in health care - the strict-liability ban on physician self-referral and the criminal ban on paying for referrals - and why nearly every practice arrangement has to fit an exception or a safe harbor.
• SubrogationThe right of an insurer or health plan that paid your bills to be repaid out of your settlement - the reason a recovery is often smaller than it looks.
• Supplemental Security Income (SSI)The federal needs-based benefit for people who are aged, blind or disabled and have little income or savings: how it differs from Social Security disability, what counts against it, and how to appeal.
• Surprise Medical Billing (No Surprises Act)The federal protection, since 2022, against a bill from an out-of-network provider the patient did not choose - the emergency room, the anesthesiologist at an in-network hospital, the air ambulance - and the good-faith estimate an uninsured patient can hold a provider to.
• Surrogate Decision-Maker (Default Surrogate Laws)Who makes medical decisions for a patient who cannot and who never named anyone - the ranked list most state laws supply, the standard the surrogate must apply, and what a surrogate cannot do.
• Veterans Disability CompensationThe tax-free monthly VA benefit for disabilities connected to military service: what service connection means, how ratings work, and the three ways to challenge a VA decision.

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