EZAppeal vs Counterforce Health vs Fight Health Insurance: B2B vs B2C Appeal Tools

Three AI tools have emerged in the last two years for fighting health insurance denials with AI: Counterforce Health, Fight Health Insurance, and EZAppeal. They all generate appeal letters using LLMs. They are very different products built for very different users.

If you're a billing company, practice manager, or healthcare provider trying to figure out which one your team should use, this comparison will save you time.

TL;DR

• Counterforce Health and Fight Health Insurance are free, patient-facing tools designed for individuals appealing their own denials.


• EZAppeal is a paid, B2B tool designed for billing companies, practices, and providers appealing denials at scale on behalf of patients.


• They don't compete with each other — they serve different markets.

Side-by-Side Comparison

| | EZAppeal | Counterforce Health | Fight Health Insurance |
|---|---|---|---|
| Target user | Billing teams, practices, providers | Individual patients | Individual patients |
| Pricing | $3 per appeal | Free for individuals | Free / pay-what-you-want |
| Funding model | Bootstrapped revenue | NIH and university grants | Founder-funded ($10K) + donations |
| Open source | No (proprietary) | No | Yes |
| HIPAA BAA | Yes (AWS Bedrock BAA) | Stated HIPAA-compliant for individual use | Not required (patient is the data owner) |
| Multi-user accounts | Yes | No | No |
| EHR integration | AdvancedMD | None | None |
| Volume model | Designed for hundreds/thousands of appeals/month | Designed for individual appeals | Designed for individual appeals |
| Audit logs | Yes | No | No |
| Mental health parity logic | Yes (MHPAEA + state parity baked in) | Implicit in evidence base | Implicit in evidence base |
| Auto/PIP appeals | On roadmap | No | No |
| Letter delivery | User downloads + sends | User downloads + sends | User downloads + sends; paid fax option |
| Best for | High-volume B2B operations | A patient appealing 1-3 denials | A patient appealing 1-3 denials |

Why You Probably Don't Want to Use a Patient Tool for B2B Work

If you run a billing operation and are tempted to use Counterforce Health or Fight Health Insurance because they're free, here are the reasons that's a problem:

1. HIPAA / Business Associate Agreement

When you upload a patient's denial letter and clinical notes to a tool, you're sharing Protected Health Information (PHI) with that tool. Under HIPAA, your practice is required to have a Business Associate Agreement (BAA) with any third-party tool that handles PHI on your behalf.

• EZAppeal operates under AWS Bedrock's BAA, which provides HIPAA-compliant infrastructure for any provider using EZAppeal.


• Counterforce Health is built for individual patient use, where the patient owns their own data and HIPAA doesn't apply in the same way (the individual is not a covered entity).


• Fight Health Insurance is similarly patient-facing — Holden Karau built it so patients could fight their own denials, not for B2B clinic use.

Uploading patient PHI to a B2C tool without a BAA is a HIPAA exposure that an audit will surface.

2. Volume mismatch

A patient might appeal 1-3 denials in their lifetime. A small billing company processes 100-500 denials per month. The user experience optimized for the former doesn't scale to the latter.

• No multi-user accounts


• No team workspaces


• No bulk import


• No audit logs of who generated what


• No SSO


• No EHR integration


• No usage analytics

3. No accountability or support

Patient-facing free tools don't have the support model that a billing operation needs. If a generated letter has an issue and the appeal is rejected, the consumer tool's support team is optimized for a single patient question. EZAppeal's customer success motion is built for billing teams that need fast resolution and escalation paths.

4. They aren't designed for the workflows your team actually uses

B2B billing workflows involve:

• Pulling denials from EOBs and 835s


• Tagging patients to specific case workers


• Tracking which appeals are in-flight, approved, denied, escalated


• Handing off appeals to peer-to-peer specialists or attorneys


• Reporting on appeal volume, success rate, and revenue recovered

None of those exist in patient-facing tools. Adding them is what makes EZAppeal a B2B platform rather than a single-shot letter generator.

When the Patient Tools ARE the Right Choice

We genuinely recommend Counterforce Health and Fight Health Insurance for individual patients. If a patient asks you whether they should fight their own denial, send them to one of these:

• Counterforce Health — funded by NIH and university grants, very polished UX, has voice AI assistant.


• Fight Health Insurance — open source, founder is a former FAANG engineer who personally fought 40 denials and won 90%+.

Both tools have generated 10,000+ appeals already. They've educated the public that AI can fight insurance denials. Frankly, they've helped EZAppeal's market by making B2B buyers (billing managers, practice administrators) realize "if patients have AI appeal tools, why don't we?"

When EZAppeal Is the Right Choice

If you're a billing company, practice manager, multi-specialty group, or independent provider and you process more than 10 denials per month, you need:

• HIPAA-compliant infrastructure with BAA coverage


• Multi-user accounts for your team


• Audit logs for compliance


• Speed (instant generation, not consumer-grade queues)


• Per-document pricing that scales with volume ($3 per appeal)


• Mental health parity logic for behavioral health denials


• EHR integration (AdvancedMD live; athenahealth + Tebra coming)


• Per-payer customization (UHC, Aetna, BCBS, Cigna, Humana medical policies built in)

That's what EZAppeal is. First appeal is free. No sales call required.

What About Authsnap?

Authsnap is the other B2B player in this space — but they target hospital systems specifically. We have a separate comparison: EZAppeal vs Authsnap.

The quick version: Authsnap = enterprise hospital RCM departments with $20K+ annual contracts and pilot applications. EZAppeal = everyone else (billing companies, practices, solo providers) with $3-per-appeal self-serve.

Recommended Next Steps

• If you're a patient appealing your own denial: try Fight Health Insurance or Counterforce Health first. They're free.


• If you're a billing professional or practice administrator: generate your first appeal letter free on EZAppeal, no credit card.


• If you want to compare AI appeal tools more broadly: see EZAppeal vs Authsnap and our AI Denial Appeal Generator complete guide.

Related Resources

• EZAppeal vs Authsnap comparison


• AI Denial Appeal Generator: Complete Guide


• Best Medical Billing Appeal Software for 2026


• Common Denial Codes (CARC + RARC) Reference