A denial is not the final bill. Insurers (UnitedHealthcare, Anthem, Geico, State Farm, and others) must usually explain why they refused payment. Your job is to read the reason codes, fix paperwork when you can, and appeal on the deadline printed in the letter—not to panic-pay a collections threat the same afternoon. Cold-call “adjusters” who demand gift cards or wires are not claim appeals—they are scams: Fake insurance claim scams.
Step 1: Separate denial types
| Context | What “denied” often means | First move |
|---|---|---|
| Health / medical | Claim unpaid or patient responsibility higher than expected | Match EOB vs provider bill; note CPT/ICD codes |
| Auto | Collision/comprehensive/liability refused or partial | Read declarations page; confirm deductible and exclusions |
| Renters | Personal property or liability denied | Check covered perils, deductible, and scheduled items (Renters insurance basics) |
A high patient share after a deductible is met is not always a “denial”—it may be coinsurance working as designed. Confirm deductible status in Health insurance deductibles.
Step 2: Read the denial like a checklist
From the denial letter / EOB / claim notes, write:
- Claim or reference number
- Date of service / date of loss
- Exact denial reason (example: “not medically necessary,” “out of network,” “pre-existing,” “wear and tear,” “late notice”)
- Appeal deadline and address/portal
- What documents they say are missing
Call member/claims services; log date, agent name, and reference. Do not rely on a chat summary alone.
Worked example
Priya’s outpatient imaging EOB shows $0 plan payment, patient responsibility $1,850, reason: prior authorization not obtained. The imaging center swore they “called it in.”
| Action | Result |
|---|---|
| Request call notes / auth reference from the provider billing office | Provider finds incomplete auth for the wrong CPT |
| Submit appeal with corrected auth + clinical notes within 60 days | Plan reprocesses; pays allowed amount minus Priya’s remaining deductible ($400) |
| If Priya had paid a medical card first | She would chase a refund while interest risk accrued |
For leftover balances after a corrected claim, use Negotiating medical bills and hospital assistance before high-APR financing.
Step 3: Fix the easy paperwork failures
Common reversible issues:
- Wrong member ID or date of birth on the claim
- Provider billed out-of-network when an in-network clinician was available (Out-of-network medical bills)
- Missing prior authorization or referral
- Duplicate claim / wrong CPT
- Late notice on a property claim when you can still document the loss date with photos and police/fire reports
Federal surprise-billing rules may limit certain balance bills—see The No Surprises Act when emergency or ancillary OON charges appear.
If the letter says the care is “not medically necessary,” use the clinician-led path in Medical necessity appeals alongside the steps below.
Step 4: Appeal in layers
- Internal appeal — follow the insurer’s form; attach EOBs, clinical notes, repair estimates, photos, police reports.
- Second internal level if offered.
- External review (health plans) — many states and federal rules allow independent review after internal denial; deadlines are short.
- Regulator complaint — state insurance department for auto/renters/health (DOI); CFPB/state AG pathways for billing junk that crosses into collections abuse.
- Policyholder attorney / public adjuster — for large property losses; fee structures vary—get engagement terms in writing.
Keep appeals factual. “I need this paid” is weaker than “Authorization #44192 was approved 2026-03-02 for CPT 73721; denial cites missing auth in error.”
Auto and renters specifics
- Confirm you shopped a coherent coverage stack before the loss (How to comparison-shop auto insurance).
- Deductible still applies on many approved claims—have cash ready (Emergency fund basics).
- Exclusions (flood on a standard renters policy, wear-and-tear, intentional acts) rarely overturn on charm; ask whether a rider should have applied going forward.
- Do not invent a date of loss; fraud is a crime and voids claims.
Money moves while the appeal runs
- Ask the provider to pause collections pending appeal (get it in writing).
- Prefer in-house $0-interest plans over deferred-interest medical cards.
- Do not ignore statements; a denial appeal and a payment plan can run in parallel on the undisputed portion.
Checklist
- Screenshot/PDF the denial, EOB, and policy declarations page.
- Write reason codes, claim ID, and appeal deadline on one page.
- Gather missing docs from the provider or contractor within a week.
- File the internal appeal before the printed deadline.
- Calendar external review / DOI options if the internal appeal fails.
- Negotiate or plan-pay only the amount that remains after reprocessing.
- After a federally declared disaster, ask a tax pro whether unreimbursed personal losses fit casualty loss deduction rules—insurance outcome first.
Educational only. Not legal, insurance, or medical advice. Appeal rights and deadlines vary by plan, state, and line of coverage.