Why Your Insurance Didn’t Pay: Understanding Denied Claims on an EOB (and How to Fix Them)
- wonacedme
- Apr 17
- 4 min read
Seeing a claim marked “denied” on your Explanation of Benefits (EOB) can be frustrating—especially when you were expecting your insurance to cover it. The good news is that many denials are fixable, and in many cases, claims can be reprocessed and paid once the issue is corrected.
At WONACE Medical Supply, we help patients, caregivers, and clinics understand insurance denials and navigate the process to get medical equipment and supplies covered correctly.
What Does a Denied Claim on an EOB Mean?
A denied claim means your insurance company has decided not to pay for a service, medical supply, or equipment—at least for now.
Important: A denial does NOT always mean final rejection.Many denials are temporary and can be resolved with corrections, documentation, or an appeal.
Common Reasons Why Insurance Claims Get Denied
Understanding the reason behind the denial is the first step to fixing it.
1. Missing or Incorrect Information
Wrong patient details
Incorrect insurance ID
Billing code errors (HCPCS/CPT)
HOW TO FIX: The provider resubmits the claim with corrected information.
2. Lack of Medical Necessity
Insurance requires proof that equipment or services are medically necessary.
Common for:
Power wheelchairs
Adaptive equipment
Diabetes supplies
HOW TO FIX: Submit a Letter of Medical Necessity (LMN) and clinical documentation from your doctor or therapist.
3. No Prior Authorization
Some equipment requires pre-approval before it is provided.
Examples:
Custom power wheelchairs
Complex rehab equipment
Certain CGM devices
HOW TO FIX: Request retro-authorization or resubmit after approval.
4. Out-of-Network Provider
If the supplier is not in your insurance network, coverage may be denied.
HOW TO FIX:
Switch to an in-network provider
Request a network exception (in some cases)
5. Policy Exclusions
Some plans exclude certain items, such as:
Convenience items
Non-covered upgrades
Experimental devices
HOW TO FIX: Verify benefits or request alternative covered equipment.
6. Duplicate or Already Paid Claims
Insurance may deny a claim if:
It appears to be a duplicate
The same service was already billed
HOW TO FIX: Provider clarifies or resubmits with correct claim details.
7. Timely Filing Limits
Claims must be submitted within a specific timeframe.
HOW TO FIX: Appeal if submission was delayed due to valid circumstances.
How to Read Denial Codes on Your EOB
Your EOB will include a denial code or remark explaining why the claim was denied.
Common phrases include:
“Not medically necessary”
“Authorization required”
“Coverage terminated”
“Out-of-network provider”
Always review this section carefully—it tells you exactly what to fix.
Step-by-Step: How to Fix a Denied Insurance Claim
Step 1: Review Your EOB Carefully
Check:
Service description
Provider name
Denial reason code
Amount billed vs allowed
Step 2: Contact Your Medical Supplier
Reach out to your provider or supplier.
At WONACE, we:
✔ Review the denial
✔ Identify missing documentation
✔ Resubmit claims when needed
Step 3: Gather Supporting Documentation
This may include:
Doctor’s prescription
Medical records
Therapy evaluations
Letter of Medical Necessity (LMN)
Step 4: Resubmit or Correct the Claim
Many denials are resolved simply by correcting and resubmitting the claim.
Step 5: File an Appeal
If the claim is still denied:
Submit a formal appeal
Include medical justification
Provide supporting documents
Most insurance companies allow multiple appeal levels.
How to Appeal an Insurance Denial (Simple Guide)
1. Request a Written Explanation
Ask your insurer for full denial details.
2. Write an Appeal Letter
Include:
Patient information
Claim details
Reason for appeal
Supporting medical evidence
3. Include Provider Support
Your doctor or therapist can strengthen your appeal.
4. Submit Within Deadline
Appeals usually must be filed within 30–180 days.
Denied Claims and Medical Equipment: What You Should Know
For durable medical equipment (DME), denials are common—but often reversible.
Equipment frequently denied (initially):
Power wheelchairs
Adaptive tricycles
Gait trainers
Standing frames
CGM devices (Dexcom, Libre)
With proper documentation, many of these get approved on resubmission or appeal.
How WONACE Medical Supply Helps Fix Denied Claims
Insurance can be complicated—but you don’t have to handle it alone.
WONACE Medical Supply provides:
✔ Insurance verification
✔ Prior authorization support
✔ Claim corrections and resubmissions
✔ Appeal assistance
✔ Communication with doctors and therapists
✔ EOB review and explanation
We work with:
Medicaid
Medicare
Blue Cross Blue Shield
UnitedHealthcare
Aetna, Cigna, and more
Pro Tips to Avoid Future Denials
✔ Always use an in-network provider
✔ Confirm prior authorization requirements
✔ Ensure documentation is complete before submission
✔ Keep copies of prescriptions and evaluations
✔ Review your EOB regularly
Need Help With a Denied Claim? Contact WONACE
A denied claim on your EOB doesn’t mean the end—it’s often just the beginning of the process. By understanding why your insurance didn’t pay and taking the right steps, you can turn many denials into approved claims.
With the right support, you can get the medical equipment and supplies you need—covered by insurance.
📞 Phone: 281-810-3123 📠 Fax: 877-787-4705 🌐 Website: www.wonace.com
WONACE Medical Supply helps patients turn insurance benefits into real medical solutions—without the confusion.
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