Prior Authorization Denied? A Step-by-Step Checklist to Build an Appeal Record That Gets Approved

How to Appeal a Prior Authorization Denial: The Record-Building Checklist That Wins Reversals

A prior authorization decision can arrive like a door slamming. Your doctor orders care. The insurer says “denied.” And suddenly the burden shifts to the patient and family, often in the middle of a health crisis.

The scale of the problem is not small. In Medicare Advantage (MA), insurers processed about 49.8 million prior authorization determinations in 2023. About 3.2 million were denied in whole or in part. Only 11.7% of those denials were appealed, but when people did appeal, 81.7% were at least partially overturned. That is not a rounding error. It is a clue: many denials do not survive a well-built record.

Doctors see the fallout every day. In the American Medical Association’s 2024 doctor survey, 93% reported that prior authorization delays access to necessary care, and 82% said it can lead to treatment abandonment. Federal regulators have taken notice, too. CMS finalized a primary prior authorization reform rule in January 2024 to improve prior authorization processes and health information exchange.

This article serves as a practical guide to a single goal: building the record. Not just venting or pleading, but creating a paper trail that compels the insurer to address its own standards, evidence, and the clinical reality.

First, what is a prior authorization denial?

Prior authorization is the insurer’s requirement for advance approval before it will pay for a service, medication, or equipment. When that approval is refused, it is often treated as an “adverse benefit determination (ABD)” under federal appeal rules for many private plans, including a denial of a preauthorization request.

In Medicare Advantage (MA), the similar decision is typically a “organization determination (OD),” and the rules require written notice explaining the decision and describing appeal rights.

Why this matters: the label can control your deadlines, your appeal lanes, and your right to an expedited decision.

The record-building principle that wins appeals

Many people think the appeal is a single letter. In reality, the appeal is a record: a curated set of documents that (1) exposes what the insurer relied on, (2) fills what was missing, and (3) forces a reviewer to explain, in writing, why the plan’s own standards do not cover the care your clinician says is necessary.

Federal rules often require denial notices to do more than say “not medically necessary.” For example, ERISA plan denial notices generally must include the specific reason for the denial, reference the specific plan provisions, and either include or offer to provide the internal rules or criteria relied on. When a denial turns on medical judgment, the notice requirements can extend to clinical explanations and even the identities of medical experts consulted.

That is the hinge. If you can force the insurer to show its work, you can often prove it did not.

Step-by-step: how to build the appeal record that gets overturned

Step 1: Identify your plan type (do this before you write a single page)

Different plans use different appeal ladders.

• Employer plan: often governed by the Employee Retirement Income Security Act of 1974 (ERISA).
• Affordable Care Act (ACA) marketplace or other non-grandfathered individual plan: generally covered by federal internal appeal and external review standards.
• Medicare Advantage (MA): separate federal rules and strict timelines.

If you are not sure, start by pulling the insurance card and the denial letter and looking for plan identifiers. Your strategy changes depending on the regime.

Step 2: Demand a legally adequate denial notice (because “DENIED” is not a reason)

A surprising number of denials omit the details you have the right to receive. Under ERISA claims-procedure rules, the denial notice generally must point to the plan provisions and explain the reason for the denial. It must also reveal internal rules or criteria relied on (or state that they will be provided free of charge upon request).

Under ACA internal appeals standards, when a denial is based on medical necessity, the notice should include either the specific rule or guideline relied on (or state that it is available free upon request) and an explanation of the scientific or clinical judgment when appropriate.

What to request, in writing (copy and paste):

• “Please identify the exact plan provision you relied on.”
• “Please provide the medical necessity criteria, utilization management guideline, and any internal rule, protocol, or similar criterion used.”
• “If medical judgment was involved, please provide the clinical rationale and the evidence relied upon.”

This is not “being difficult.” It is the beginning of a record.

Step 3: Build the medical record like you are preparing for a cross-examination

A successful appeal record typically includes:

1. A clinician narrative: a treating provider letter that answers the insurer’s reasons point-by-point.
2. Objective support: labs, imaging, therapy notes, hospital records, progress notes, and functional assessments.
3. Why alternatives failed: dates, durations, and outcomes of conservative care.
4. Risk of delay: what happens if care is postponed, including safety risks.

If the insurer’s denial hinges on “not medically necessary,” treat that phrase like a claim that must be proven wrong. Federal notice rules expect that medical judgment is part of the dispute and require a meaningful explanation.

Step 4: Make the appeal letter a structured case file, not a personal plea

A persuasive appeal reads like this:

• Issue: “The plan denied prior authorization for [SERVICE].”
• Plan rule: quote or cite the plan provision the insurer must follow (once you have it).
• Facts: timeline of symptoms, treatment, and medical need.
• Medical necessity proof: attach and summarize the documents that meet the insurer’s own criteria.
• What the denial missed: missing records, misapplied rule, wrong assumption, outdated criteria.
• Request: approval, expedited review if appropriate, and confirmation in writing.

For Medicare Advantage determinations, notices, and appeal rights, regulations define the requirements, including the information that must be provided in a written determination. Build your appeal to that structure.

Step 5: Use expedited lanes when health cannot wait

Time is a medical variable.

• Medicare Advantage (MA): expedited organization determinations are governed by regulation, with a general requirement to decide as expeditiously as the health condition requires, but not later than 72 hours in many expedited scenarios.
• Kentucky utilization review: Kentucky law provides a mechanism for peer-to-peer review, and the timeframe to schedule it can be short once requested.

If you need speed, the record should explicitly state this and include the physician’s statement on the risk of delay.

Step 6: Preserve your right to independent review when available

For many non-grandfathered private plans, external review can be a critical backstop. Federal rules include a time window to request external review, often tied to the date of the final internal adverse benefit determination (FIAD).

Kentucky also has an independent review framework for certain disputes, with statutory standards governing what the independent review entity evaluates. Ohio’s administrative rules also regulate internal appeal processes for many health benefit plans.

The practical point: do not assume the insurer is the only decision-maker you will face. Build the record so it survives handoff to an external reviewer.

The “overturnable denial” checklist

Before you submit, confirm you have these in your packet:

• The denial letter and any attachments
• The plan provision the insurer cited (or proof they refused to identify it)
• The medical necessity criteria or utilization review guideline (or evidence they refused to provide)
• A treating clinician’s letter addressing the denial reasons for the denial
• The key medical records supporting the necessity
• A timeline of care, including failed alternatives
• An explicit request for expedited review if delay is harmful
• Proof of submission (fax confirmation, portal screenshot, certified mail receipt)

Remember the KFF data point: most appealed Medicare Advantage prior authorization denials are overturned. The difference is often documentation.

The most common mistakes people make (and how to avoid them)

1. Appealiinsurer’st the insurer’s criteria. Ask for it. Federal notice rules expect the requirements question.
2. Submitting records, but no narrative. A reviewer needs a guided story tied to standards.
3. Missing deadlines. Every regime has different clocks.
4. As”uming the first “no” is final. Many “no” decisions collapse under structured review.
5. Not using expedited options. When health is at risk, speed matters and is often regulated.

Call to action: If you want a record that can win, build it like a case

If you are facing a prior authorization denial in Kentucky or Ohio, you do not have to guess your way through the process. The single most significant advantage you can create is a complete, deadline-safe, regulation-aware appeal record that forces the insurer to answer the central question: why is medically necessary care being blocked?

Visit AppealHealthcare.com and contact Frank M. Mungo, Attorney at Law, to request a review of your denial letter and your appeal options. If time is running, say that up front. In many cases, the difference between a delay and an approval is not luck. It is the record.

DISCLAIMER: This blog post is intended for informational purposes only and is not legal advice. The information given should not be relied on as a substitute for obtaining legal advice from an attorney licensed to practice in your area. Reading this blog post or contacting our firm through this website does not create an attorney-client relationship. Every case is unique, and past results do not guarantee or predict future outcomes. Individual results may vary based on the specific facts, jurisdiction, parties involved, and other factors relevant to your situation.

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