How to Challenge a Medical Bill in 2026

Why You Should Review Every Medical Bill

Studies consistently show that between 60% and 80% of medical bills contain errors. These are not small mistakes — the average billing error is approximately $1,300. For people with complex procedures, ER visits, or hospital stays, the numbers can be much higher. The American Medical Association estimates that billing errors cost patients billions of dollars every year.

The reality is that medical billing is a massive, complex system with over 10,000 procedure codes, each with its own rules about how they can be combined, modified, and priced. Mistakes are inevitable. The question is whether you catch them.

Step 1: Request an Itemized Bill

The first thing you need is an itemized bill — not a summary statement. A summary might say "Hospital Services: $4,200." An itemized bill breaks down every charge: every procedure (with CPT codes), every medication, every supply, every room charge.

You have the legal right to request an itemized bill. Call the hospital billing department and ask for one. If you have already received a summary, call and specifically request the itemized version with CPT codes. Under federal law, hospitals must provide this within 30 days.

Step 2: Get Your Explanation of Benefits (EOB)

If you have insurance, request your Explanation of Benefits (EOB) from your insurance company. This document shows what the hospital charged, what the insurance company allowed (the negotiated rate), what insurance paid, and what you owe. Compare the EOB against your itemized bill — they should match. If the hospital is charging you more than the EOB says you owe, that is a balance billing error.

Step 3: Look for Common Errors

Once you have your itemized bill, look for these common errors:

• Duplicate charges: The same procedure code appearing twice for the same date. This is the easiest error to spot.
• Upcoding: Being charged for a more complex procedure than what was performed. For example, a Level 5 ER visit code when your visit was straightforward.
• Unbundling: Procedures that should be billed under a single code are split into multiple codes to increase the total.
• Pharmacy markups: Medications charged at 10-50x their retail price. A $5 pill billed at $150.
• Services not received: Charges for procedures, tests, or medications you did not actually receive. Cross-reference against your memory and any records you have.

Step 4: Research Fair Pricing

For each line item that looks suspicious, research fair pricing. Federal pricing benchmarks are the gold standard — they show what the government pays for any procedure by region. While hospitals are not required to charge these rates, a charge that is 3-5x the federal benchmark is a strong signal of a billing error.

Since 2021, hospitals are also required to publish their prices online (hospital price transparency rule). You can look up your hospital's published rates and compare them against your charges.

Step 5: Contact the Billing Department

Call the hospital billing department with your findings. Be specific: reference exact CPT codes, dates of service, amounts charged, and the fair pricing benchmark you found. Document everything — the date of your call, who you spoke with, and what was discussed.

If the billing department is unresponsive or dismissive, follow up in writing. A formal dispute letter sent via certified mail creates a paper trail and demonstrates seriousness. Address it to the billing department, and if necessary, escalate to the hospital CFO or patient advocate.

Step 6: Escalate If Necessary

If the hospital refuses to correct the errors, you have several escalation options. You can file a complaint with your state insurance commissioner. You can contact the hospital patient advocate. For egregious cases, you can file in small claims court. Many states also have surprise billing and balance billing protections that may apply to your situation.

Or Let BillRazor Handle It

Everything described above — the research, the phone calls, the letters, the escalation — is exactly what BillRazor does for you. Upload your bill, and we check it in under a minute. If errors are found, we negotiate with the hospital and handle every step of the process on your behalf. You do not need to spend hours on the phone. We charge 25% of the savings — and if we do not save you anything, you pay nothing.