Sued for Medical Debt? How to Defend Yourself in 2026

Debt collectors file over 4 million lawsuits per year in the United States, and medical debt is one of the most common categories. But here is the number that matters: according to court records analyzed by the CFPB, over 70% of these lawsuits end in default judgment — meaning the consumer never responded. BillKarma's review of medical debt cases found that 42% of patients who did respond and raised a defense saw the case dismissed, reduced, or settled for less than 30% of the claimed amount. Showing up is more than half the battle.

1. Got a summons? Don't panic

A lawsuit summons feels terrifying. It is designed to feel that way. But a summons is not a judgment — it is the beginning of a process, and you have every right to participate in that process and defend yourself.

Here is what you need to do immediately:

1. Note the deadline. The summons will state how many days you have to respond (typically 20-30 days). Mark this date on your calendar. Missing it means automatic loss.
2. Read the complaint. The summons comes with a complaint that states who is suing you, how much they claim you owe, and the legal basis for the lawsuit. Read every page.
3. Do not contact the collector to negotiate — yet. Anything you say can be used in the lawsuit. Respond through the court first.
4. Gather your documents. Find your original hospital bill, your Explanation of Benefits, any payment receipts, and any correspondence with the collector.

The single most important thing you can do is file a response (called an "Answer") before the deadline. Even a simple one-page Answer that denies the claims and raises basic defenses is infinitely better than no response at all.

2. Anatomy of a medical debt lawsuit

What to look for in the complaint:

• Who is suing? Is it the hospital or a third-party collector/debt buyer? Debt buyers must prove they purchased your specific debt.
• What evidence did they attach? Many medical debt lawsuits come with minimal documentation — sometimes just an affidavit and a spreadsheet printout. No itemized bill, no signed agreement, no chain of title.
• Date of service vs. today's date — Is the statute of limitations expired? Use our SOL calculator to check.
• Does the amount match your records? Compare to your original bill and EOB.

3. 5 defenses that actually work

Defense 1: Expired statute of limitations

Every state has a time limit for filing debt collection lawsuits. If the collector waited too long, the debt is "time-barred" and you can raise this as an affirmative defense in your Answer. The SOL typically runs from the date of last payment or the date the bill was due — not from the date the debt was sold to a collector. Use our statute of limitations calculator to check your state's rules.

Defense 2: Lack of standing (they can't prove they own the debt)

If a debt buyer is suing you, they must prove an unbroken chain of title from the original hospital to themselves. This means producing the original assignment agreement, every subsequent sale agreement, and documentation that your specific account was included. Many debt buyers cannot do this because they purchased bulk portfolios with minimal documentation.

Defense 3: Incorrect amount

Challenge the amount if it doesn't match your original bill, includes unauthorized fees, or doesn't account for insurance payments. BillKarma's analysis found that 12% of collection lawsuit amounts were higher than the original hospital bill, with unexplained additions. Running your original bill through BillKarma can identify duplicate charges, unbundled codes, and other errors that reduce the valid amount.

Defense 4: Billing errors in the original charges

If the original medical bill contained errors — duplicate charges, unbundled lab codes, upcoded visits, or services you never received — those errors carry through to the collection amount and the lawsuit. Courts take billing accuracy seriously. Presenting evidence of specific CPT code errors with Medicare rate comparisons is a compelling defense.

Defense 5: Improper service

If you were not properly served with the summons (it was left with someone who is not a member of your household, it was served at the wrong address, or it was not served at all), you can challenge the service. This does not eliminate the debt, but it can get the current case dismissed, forcing the collector to start over — which they may choose not to do.

4. How to file your Answer (step by step)

Step 1: Get the Answer form

Many courts provide fill-in-the-blank Answer forms for debt collection cases. Check your county court's website or visit the courthouse self-help center. If no form is available, you can write your own Answer following a standard format.

Step 2: Respond to each allegation

The complaint will contain numbered paragraphs with specific allegations. In your Answer, respond to each one with "Admit," "Deny," or "Lack sufficient knowledge to admit or deny" (which functions as a denial). When in doubt, deny — the burden of proof is on the collector.

Step 3: List your affirmative defenses

After responding to the allegations, list your defenses:

• "The statute of limitations has expired on this claim" (if applicable)
• "Plaintiff lacks standing to bring this action" (if it's a debt buyer)
• "The amount claimed is incorrect and includes unauthorized charges"
• "The original billing contained errors including [specific errors]"

Step 4: File with the court and serve the plaintiff

File your Answer with the court clerk (there is usually a small filing fee, $25-75 in most states — ask about a fee waiver if you cannot afford it). Then send a copy to the plaintiff's attorney by mail.

Step 5: Request discovery

After filing your Answer, you can request discovery — formal document demands. Ask for the complete chain of title, the itemized original bill, proof of all payments applied, and the collector's purchase agreement. This is where many cases fall apart for debt buyers.

5. What happens in court

After you file your Answer, the case follows a standard process:

Most medical debt lawsuits never reach trial. The majority are resolved at the settlement conference or after discovery reveals that the collector's evidence is weak. Filing an Answer and showing up is often enough to trigger a favorable settlement.

6. Settling before trial

Even after being sued, you can negotiate a settlement. In fact, your bargaining position may be stronger now that you have filed an Answer and raised defenses. Collectors prefer settlements over trials because trials cost them money and time.

Typical settlement ranges for medical debt lawsuits after an Answer is filed:

• Debt is time-barred: Collector may dismiss the case or accept 10-20% to avoid sanctions
• Collector has weak documentation: 15-30% of the claimed amount
• Amount has billing errors: Corrected amount minus 20-40% for lump-sum
• Collector has strong documentation: 40-60% as a lump-sum settlement

Always get the settlement in writing before paying. The agreement should state the amount, that it resolves the debt in full, and that the lawsuit will be dismissed with prejudice (meaning they cannot refile). Consider using our settlement offer tool to draft a protective settlement letter.

7. Real case outcomes

Frequently asked questions

Sources

• CFPB: Medical Debt in Collections — Consumer Impact Report
• Pew Research: How Americans View Medical Debt (2023)
• FTC: Fair Debt Collection Practices Act — Full Text
• CFPB: Regulation F — Debt Collection Final Rule
• CMS Medicare Physician Fee Schedule (2026)
• National Consumer Law Center: Debt Collection and Court Proceedings