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 B2B tool for billing companies, practices, and providers working denials at scale; triage is free and appeal letters are paid.
• Their free tools serve patients; EZAppeal serves the people who bill for care.

Side-by-Side Comparison

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, a practice needs a Business Associate Agreement (BAA) with any third-party tool that handles PHI on its behalf. A billing company is itself a business associate of its provider clients, so it needs a subcontractor BAA with any tool it uses on their PHI.

• EZAppeal signs a BAA with every account, and runs AI processing of clinical content on AWS Bedrock under its own BAA with AWS.
• 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 billing company can work hundreds of denials per month. The user experience optimized for the former doesn't scale to the latter.

• No bulk import
• No activity log of what was generated
• 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 supports billing teams directly at contact@ezappeal.com.

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. EZAppeal covers the first today: it reads the 835 and sorts every denial by what to do next, and it keeps an activity log of every letter. Case assignment, appeal tracking and outcome reporting still live in your practice management system or tracker.

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, built by Holden Karau, a software engineer who has worked at Google, Apple and Netflix, after she faced roughly 40 insurance denials of her own (San Francisco Standard, 2024).

Both tools have 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
• An activity log for compliance
• Speed (drafted while you wait, not a consumer-grade queue)
• Per-document pricing that drops at volume ($5 per appeal letter, $4.00 at 500+)
• Mental health parity logic for behavioral health denials
• Free 835 remittance triage: every denial sorted into appeal, corrected claim, rebill to the right payer, peer-to-peer, bill the patient, or likely not worth appealing
• Payer criteria lookup: cites the payer's published medical policy when one is on file

That's what EZAppeal is. New accounts get 6 free documents. No sales call required.

What About Authsnap?

Authsnap is another B2B tool in this space, built for hospital systems. We have a separate comparison: EZAppeal vs Authsnap.

The quick version: Authsnap = enterprise hospital RCM departments, with pilot applications and unpublished pricing. EZAppeal = everyone else (billing companies, practices, solo providers) with $5-per-letter 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: start with 6 free documents 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