Denial Basics
How insurance denials work, types of denials, and your appeal rights.
125 articles in this topic
Medical Necessity Denials Explained: What They Mean and What to Do
Learn what a medical necessity denial means, why insurers issue them, and the steps to overturn one.
How to Fight a Medical Necessity Denial and Win
Step-by-step guide to appealing a medical necessity denial with proven strategies.
Prior Authorization Denials Explained: What They Mean and What to Do
Learn what a prior authorization denial means, why insurers issue them, and the steps to overturn one.
How to Fight a Prior Authorization Denial and Win
Step-by-step guide to appealing a prior authorization denial with proven strategies.
Out-of-Network Denials Explained: What They Mean and What to Do
Learn what a out-of-network denial means, why insurers issue them, and the steps to overturn one.
How to Fight a Out-of-Network Denial and Win
Step-by-step guide to appealing a out-of-network denial with proven strategies.
Experimental Treatment Denials Explained: What They Mean and What to Do
Learn what a experimental treatment denial means, why insurers issue them, and the steps to overturn one.
How to Fight a Experimental Treatment Denial and Win
Step-by-step guide to appealing a experimental treatment denial with proven strategies.
Not Covered Denials Explained: What They Mean and What to Do
Learn what a not covered denial means, why insurers issue them, and the steps to overturn one.
How to Fight a Not Covered Denial and Win
Step-by-step guide to appealing a not covered denial with proven strategies.
Coding Error Denials Explained: What They Mean and What to Do
Learn what a coding error denial means, why insurers issue them, and the steps to overturn one.
How to Fight a Coding Error Denial and Win
Step-by-step guide to appealing a coding error denial with proven strategies.
Duplicate Claim Denials Explained: What They Mean and What to Do
Learn what a duplicate claim denial means, why insurers issue them, and the steps to overturn one.
How to Fight a Duplicate Claim Denial and Win
Step-by-step guide to appealing a duplicate claim denial with proven strategies.
Timely Filing Denials Explained: What They Mean and What to Do
Learn what a timely filing denial means, why insurers issue them, and the steps to overturn one.
How to Fight a Timely Filing Denial and Win
Step-by-step guide to appealing a timely filing denial with proven strategies.
Coordination of Benefits Denials Explained: What They Mean and What to Do
Learn what a coordination of benefits denial means, why insurers issue them, and the steps to overturn one.
How to Fight a Coordination of Benefits Denial and Win
Step-by-step guide to appealing a coordination of benefits denial with proven strategies.
Pre-Existing Condition Denials Explained: What They Mean and What to Do
Learn what a pre-existing condition denial means, why insurers issue them, and the steps to overturn one.
How to Fight a Pre-Existing Condition Denial and Win
Step-by-step guide to appealing a pre-existing condition denial with proven strategies.
Referral Required Denials Explained: What They Mean and What to Do
Learn what a referral required denial means, why insurers issue them, and the steps to overturn one.
How to Fight a Referral Required Denial and Win
Step-by-step guide to appealing a referral required denial with proven strategies.
Step Therapy Denials Explained: What They Mean and What to Do
Learn what a step therapy denial means, why insurers issue them, and the steps to overturn one.
How to Fight a Step Therapy Denial and Win
Step-by-step guide to appealing a step therapy denial with proven strategies.
Quantity Limit Denials Explained: What They Mean and What to Do
Learn what a quantity limit denial means, why insurers issue them, and the steps to overturn one.
How to Fight a Quantity Limit Denial and Win
Step-by-step guide to appealing a quantity limit denial with proven strategies.
Formulary Exclusion Denials Explained: What They Mean and What to Do
Learn what a formulary exclusion denial means, why insurers issue them, and the steps to overturn one.
How to Fight a Formulary Exclusion Denial and Win
Step-by-step guide to appealing a formulary exclusion denial with proven strategies.
Place of Service Denials Explained: What They Mean and What to Do
Learn what a place of service denial means, why insurers issue them, and the steps to overturn one.
How to Fight a Place of Service Denial and Win
Step-by-step guide to appealing a place of service denial with proven strategies.
How to Read Your Explanation of Benefits (EOB)
A plain-English guide to understanding every section of your EOB.
EOB vs. Medical Bill: What Is the Difference
Learn the key differences between an EOB and a medical bill.
Anatomy of a Denial Letter: Every Section Explained
Break down each part of a denial letter so you know exactly what it says.
Understanding Insurance Denial Codes
A guide to common denial reason codes and what each one means.
CARC Codes Explained for Patients
Learn what Claim Adjustment Reason Codes mean for your denied claim.
RARC Codes Explained for Patients
Understand Remittance Advice Remark Codes on your denial.
Your Right to Appeal an Insurance Denial
Know your legal rights when your insurance company denies a claim.
Appeal Deadlines You Need to Know
Critical timelines for filing internal and external appeals.
What Happens After Your Claim Is Denied
Your options and next steps after receiving a denial letter.
Can Insurance Deny Emergency Room Care
Learn whether insurers can deny ER visits and how to fight back.
Denied After Getting Pre-Approval: What to Do
Steps to take when your insurer reverses a prior authorization.
Retroactive Denials Explained
What it means when your insurer denies a claim after already paying it.
Partial Denials Explained: When Insurance Pays Less Than Expected
How to handle claims where your insurer only covers part of the cost.
Downcoding Denials: When Your Insurer Reduces the Procedure Code
What downcoding is and how to challenge it.
Bundling Denials Explained
How insurers bundle procedure codes and what you can do about it.
Concurrent Review Denials: Cut Short During Treatment
What to do when your insurer stops paying mid-treatment.
Utilization Review Explained for Patients
How insurance companies decide whether to approve or deny care.
Clinical Guidelines Insurers Use to Deny Claims
The medical policies and criteria behind denial decisions.
InterQual vs. Milliman Criteria: What Patients Should Know
How these clinical tools affect your coverage decisions.
How Insurers Decide Medical Necessity
The process insurance companies use to determine if care is necessary.
Insurance Denial Rate Statistics in 2026
Current data on how often claims are denied and overturned.
Most Commonly Denied Medical Procedures
A list of treatments that insurers deny most frequently.
Top 10 Reasons Insurance Claims Get Denied
The most common reasons behind claim denials.
Clean Claim Requirements: Avoid Denials Before They Happen
How to submit a claim that is less likely to be denied.
Provider Appeals vs. Patient Appeals: What Is the Difference
When your doctor appeals for you vs. when you need to do it yourself.
How Long Does an Insurance Appeal Take
Expected timelines for internal and external appeal decisions.
Urgent Care Claim Denials: Common Reasons and Fixes
Why urgent care visits get denied and how to appeal.
Preventive Care Denial: When Free Services Get Billed
How to fight denials for care that should be covered at no cost.
Lab Work and Blood Test Denials Explained
Common reasons lab tests get denied and how to resolve them.
MRI and CT Scan Denials: Why They Happen
How to appeal when diagnostic imaging is denied.
Ambulance Service Denials Explained
Why ambulance claims get denied and your appeal options.
Anesthesia Denials: When Your Insurer Refuses to Pay
How to handle denials for anesthesia services.
Second Opinion Denied by Insurance: Your Rights
What to do when your insurer will not cover a second opinion.
Claim Denial vs. Coverage Denial: Key Differences
Understanding the distinction and how each type is appealed.
What Is an Adverse Benefit Determination
The legal term for denials and what it means for your appeal rights.
How to Request Your Complete Claim File
Your right to obtain all documents your insurer used in its decision.
10 Common Myths About Insurance Denials
Misconceptions that stop people from appealing.
Denial vs. Rejection: What Is the Difference
How a rejected claim differs from a denied claim.
When to Resubmit a Claim vs. When to Appeal
Knowing which path to take for faster resolution.
Insurance Bad Faith Denials: When to Escalate
Recognizing when a denial crosses the line into bad faith.
How to Track Your Insurance Appeal
Keeping records and following up on your appeal status.
How to Get Your Denial in Writing
Why a written denial matters and how to request one.
Tips for Calling Your Insurance Company About a Denial
How to handle phone conversations with your insurer effectively.
Denied After Surgery: What Are Your Options
Steps to take when a procedure is denied after it has been performed.
Pediatric Claim Denials: Fighting for Your Child
How to appeal denials for children's medical care.
Newborn Care Denials and How to Appeal Them
Common reasons newborn claims are denied and how to fix it.
Inpatient vs. Outpatient Status Denials
When your hospital stay classification causes a denial.
Observation Status Denials Explained
How observation vs. inpatient status affects your coverage.
Skilled Nursing Facility Denials
Appealing when SNF care is denied or cut short.
Home Health Care Denials and Appeals
How to fight denials for in-home medical services.
Hospice Care Denials: What Families Need to Know
Appealing when hospice services are denied.
Telehealth Visit Denials Explained
Why virtual care visits get denied and how to appeal.
Dental to Medical Crossover Denials
When dental procedures should be covered under medical insurance.
Vision Care Denials and Appeals
How to fight denials for eye care and vision services.
Hearing Aid Denials: State Mandates and Appeals
Appealing when hearing aids are denied coverage.
Prosthetic Device Denials and How to Appeal
Fighting denials for prosthetics and artificial limbs.
Orthotics Denials Explained
How to appeal when custom orthotics are denied.
Speech Therapy Denials and Appeals
Overturning denials for speech-language pathology services.
Occupational Therapy Denials Explained
How to appeal when OT services are denied or limited.
Chiropractic Care Denials and Appeals
Fighting denials for chiropractic treatment.
Acupuncture Denials: Coverage Rules and Appeals
When acupuncture is covered and how to appeal denials.
Clinical Trial Coverage Denials
Your rights to coverage for routine costs during clinical trials.
Off-Label Drug Use Denials
Appealing when your insurer denies a medication used off-label.
Specialty Drug Denials and Appeals
How to fight denials for high-cost specialty medications.
Biosimilar Switch Denials Explained
When your insurer forces a switch and denies the original biologic.
Compound Medication Denials
Appealing denials for compounded prescriptions.
Balance Billing After a Denial: What to Know
Understanding balance bills that follow denied claims.
Group Plan vs. Individual Plan Denial Differences
How denial handling varies by plan type.
Marketplace Plan Denials Explained
Common reasons ACA marketplace claims are denied.
Medicare Claim Denials Explained
Why Medicare denies claims and what beneficiaries can do.
Medicaid Claim Denials Explained
Common Medicaid denial reasons and next steps.
TRICARE Denial Letters Explained
Understanding military health plan denials.
Dental Insurance Denials Explained
Why dental claims get denied and how to respond.
Mental Health Claim Denials Explained
Common reasons behavioral health claims are denied.
Prescription Drug Denials Explained
Why your pharmacy claim was denied and what to do.
Emergency Room Denial Reasons
The most common reasons ER visits are denied.
Surgery Denials: Why They Happen
Common reasons surgical procedures are denied coverage.
Specialist Visit Denials Explained
Why referrals and specialist visits get denied.
Therapy Visit Limit Denials
When your insurer caps the number of therapy sessions.
Insurance Recoupment Explained
When your insurer takes back money it already paid.
Authorization Expired Denials
What to do when your approval lapses before treatment.
Network Gap Exception Denials
When there is no in-network provider for your condition.
Benefit Exclusion Denials Explained
When your plan specifically excludes a service.
Age Limit Denials for Medical Procedures
When insurers deny care based on patient age.
BMI Requirement Denials
When your insurer requires a certain BMI for coverage.
Denied for Incomplete Medical Records
What to do when your claim lacks required documentation.
Wrong Provider Type Denial
When your insurer says the wrong type of provider treated you.
Not a Covered Benefit Denial Explained
Understanding exclusions in your health plan.
Services Not Authorized Denial
The difference between unauthorized and not covered.
Level of Care Denials Explained
When your insurer says you need a lower level of care.
Hospital Readmission Denials
When your return to the hospital is denied.
Cosmetic Procedure Denials Explained
When insurers classify necessary care as cosmetic.
Investigational Treatment Denials
When your insurer labels a treatment as investigational.
Plan Limitation Denials: Annual and Lifetime Caps
Understanding coverage limits in your plan.
Subscriber Eligibility Denial Explained
When your insurer says you are not eligible for coverage.