An unpaid bill does not vanish. Here is the sequence it follows, what each stage costs, and the steps to take while your options are still open.

This guide is general information, not insurance, tax or legal advice. Rules, limits and deadlines change each year, so check HealthCare.gov, Medicare.gov or your insurer for your situation.

A medical bill you cannot pay this month does not shrink by sitting unopened in a drawer. It moves through a fairly predictable sequence: past-due notices from the provider, then a third-party collection agency, then possibly a mark on your credit report or a lawsuit. Each stage carries its own cost, some in dollars and some in options you quietly lose. Knowing the sequence helps you decide where to step in.

What Happens in the First 90 Days After You Get the Bill

Providers usually do not act immediately. Most wait somewhere between three and six months without payment before turning an account over to a collection agency, but each sets its own timeline. During that stretch, expect repeated calls and letters from the billing office, and expect the balance to grow if you ignore it. The Consumer Financial Protection Bureau (CFPB) warns that doing nothing can mean late fees and interest on top of what you already owe.

The first weeks are also when mistakes are cheapest to fix. Review the statement for errors, check that your insurer covered its share, and find out whether financial assistance or charity care might reduce what you owe. If a charge looks wrong, ask for an itemized list of charges and take it to the provider’s billing or accounting office; their contact information is on the statement. Our walkthrough of how to read your Explanation of Benefits shows what to compare the bill against before you pay anything.

Helpful tip: Request an itemized bill as soon as a statement arrives. The CFPB advises acting quickly so charges can be corrected and you can avoid late fees and interest.

Some bills should not be paid at all. Since January 1, 2022, the No Surprises Act has limited what insured patients can be charged for many out-of-network emergency services and certain other surprise bills, and it offers some protections to uninsured patients as well. Our article on mistakes to avoid with a surprise medical bill explains how to recognize that situation.

When an Unpaid Medical Bill Goes to Collections

When a bill goes unpaid, the provider can hire a third-party collection agency or sell the debt outright. Once the debt changes hands, the collector becomes your main point of contact, whether that is an agency, a law firm that collects debts regularly, or a company that buys delinquent debt and pursues it. Health care is a large part of this business. An estimate cited by congressional researchers put roughly a fourth of the debt collection industry’s 2023 revenue at health care debt.

The federal Fair Debt Collection Practices Act governs these third-party collectors, though it generally does not apply to the medical provider itself. It bars harassment, threats, and deception, and collectors may not pretend to be an attorney or a government agency. They cannot call before 8 in the morning or after 9 at night unless you agree, and they may not contact you at work if they know your employer disapproves. A collector must also send a validation notice that spells out basic details about the debt.

You can slow the contact down. Write a letter telling the collector to stop, send it by certified mail and pay for a return receipt so you have proof of delivery, and keep a copy. After the collector receives it, the collector may reach out only to say contact is ending or to announce a specific step, such as filing a lawsuit. The letter stops the calls but does not erase the debt, and the collector can still sue.

If a collector is demanding more than the No Surprises Act permits, the CFPB recommends disputing the debt in writing right away, which protects your rights and puts the collector on notice that the amount may exceed what the law allows.

How Medical Debt Shows Up on Your Credit Report

A collector can pass information about unpaid medical debt to the nationwide credit bureaus, and both the collector and the bureaus are covered by the Fair Credit Reporting Act, which requires the information they handle to meet accuracy standards.

For now, the protections you have rest mostly on policies the bureaus chose to adopt rather than on federal law. Accounts that started out below $500 stay off the reports kept by Equifax, Experian and TransUnion no matter how long they go unpaid. Larger balances generally must wait a full year from the date of the original bill before a collector can report them, a buffer meant to leave room for sorting out insurance or billing mistakes. And once a medical collection is paid or settled, the bureaus take it off your report completely.

Those policies have shifted before and can shift again. In 2022, the three major credit bureaus voluntarily removed an estimated 70 percent of outstanding medical debt from credit reports. The CFPB finalized a rule that would have eliminated medical debt from most credit reports, but a judge overturned it in July 2025. What remains is a set of pledges the bureaus have made on their own plus an increasing number of state laws, so check the current rules before counting on them.

The Credit Damage You May Not Notice Right Away

For many people, the first sign of trouble is a credit score drop that leads them to a collection they never knew existed. The CFPB has documented complaints from people who discovered an outstanding medical bill this way and were told the only way to get the negative information off their report was to pay it. Its research found that in 2021, medical collections accounted for 58 percent of all third-party collection tradelines on consumer credit reports, affecting an estimated 43 million people and $88 billion in reported medical debt.

Once a collection lands on your report, the consequences extend past loan applications. According to the CFPB, people end up with less access to credit, a higher chance of bankruptcy, and more trouble finding a job or housing, and those harms can occur even when the bill itself was wrong, never owed, or never verified. Medical debt is also a poor signal of creditworthiness: CFPB research found that a medical bill on a credit report is a relatively weak predictor of whether someone repays a loan. Between 2018 and 2021, the CFPB saw a 31 percent rise in complaints about collectors chasing medical bills people said they did not owe.

Can a Hospital Sue You Over an Unpaid Bill?

Yes, and the cost of ignoring a bill can eventually include a court judgment. The CFPB lists lawsuits and garnishments among the possible consequences of not paying a medical bill. The FDCPA’s limits on contact do not shield you from this: after you send a letter telling a collector to stop communicating, the collector can still notify you that it intends to file suit.

A collector cannot lie to pressure you, though. The FDCPA prohibits false or misleading representations about the character, amount, or legal status of a debt, so a claim that you owe more than the law allows, or that you face consequences the law does not provide, is itself a violation you can report to the CFPB.

Deadlines You Miss by Waiting to Act

The clock matters as much as the money. While a bill sits untouched, several time-sensitive rights can lapse.

What you can lose	Why waiting costs it
Insurance appeals	You can pursue an internal appeal with your insurer and, in many cases, an outside review after that, but both processes follow deadlines in your policy documents
Charity care and financial assistance	Providers set their own application windows, and the CFPB reports people being sent to collections for bills their insurer had already paid or that charity care had already resolved
Dispute rights with collectors	Disputing in writing early protects your rights under the FDCPA and the FCRA
The one-year credit reporting window	Collector and billing disputes are easier to resolve before a tradeline is eligible to appear

If you disagree with what your insurer paid or denied, appeal rather than letting the provider bill you for the difference. Our guide to mistakes to avoid when appealing a denied health claim covers the errors that sink otherwise strong appeals.

Financial Assistance You Can Lose Out On

The CFPB advises checking for financial assistance and charity care before anything else, because federal or state protections may reduce what you owe and shield you from collection and credit reporting. Hospitals and other providers set their own eligibility rules and deadlines, so ask the billing office for the assistance application and the cutoff date rather than assuming you earn too much. Rules vary by state, so your state consumer protection or insurance agency is a good place to confirm what applies to you.

The cost of skipping this step is real. CFPB complaints include people contacted by collectors over bills that insurance had already taken care of or that charity care had already wiped out, and people who paid bills they did not believe were valid just to avoid credit or privacy consequences. Some collectors have also put detailed medical details into collection notices, which people described as an invasion of their medical privacy.

What to Do Before the Bill Reaches a Collector

If a balance remains after checking for errors, talk with the billing office about paying over time or other arrangements before the situation gets harder to manage. A plan you set up with the billing office keeps the account out of collections and usually costs nothing beyond the bill itself.

A practical order of operations:

1. Confirm the bill is actually yours and that you have not already paid it. The CFPB notes that providers or collectors sometimes mix up patients with similar names.
2. Request an itemized bill and look for charges billed twice for the same service or treatment.
3. Compare the bill with your Explanation of Benefits and ask the billing office about anything that does not match.
4. Apply for charity care or financial assistance, and note the deadline.
5. If an amount is still owed, arrange a payment plan before the provider’s collections window closes.
6. Keep every letter, statement, and note from phone calls, including dates, names, and reference numbers.

None of this requires legal training or money upfront. The CFPB accepts complaints about debt collection and credit reporting online and by phone at (855) 411-CFPB, and you can dispute a medical bill directly with the collector or the credit bureau reporting it.

The real cost of ignoring a medical bill is rarely the bill alone. It is the late fees and interest, the credit file that narrows your options for years, and the assistance and appeal deadlines that expire quietly in the background. If you have a bill you cannot pay right now, call the provider’s billing office this week and ask two questions: what assistance programs you might be eligible for, and what kind of payment plan they can offer.

Frequently asked questions

How long do I have before an unpaid medical bill goes to collections?
Most providers wait somewhere between three and six months without payment before turning an account over to a collection agency, but each sets its own timing. Late fees and interest can pile up while you wait.

Will an unpaid medical bill appear on my credit report?
Balances that started below $500 stay off credit reports, and larger amounts generally cannot be reported until a year has passed since the original bill. These protections come from policies the bureaus adopted on their own, not from federal law.

Can I be sued over a medical bill I cannot pay?
Yes. The Consumer Financial Protection Bureau warns that ignoring a medical bill can lead to lawsuits and wage garnishments, and a collector can still sue even after you send a written request that it stop contacting you.

What is the first thing to do if I cannot pay a medical bill?
Confirm the bill is really yours and correctly calculated, ask for an itemized bill, and request the provider’s financial assistance or charity care application along with its deadline.