How do I dispute an emergency room bill?

Start by requesting an itemized bill and your UB-04 form from the hospital. Compare the CPT billing codes to your medical records, and look for upcoding, duplicate charges, or services you did not receive. MedicalBillReview.net can review your bill for free and identify errors you can formally dispute.

Is the ER bill review completely free?

Yes. MedicalBillReview.net provides a completely free, independent review of your emergency room bill. There is no cost to you at any point.

What is upcoding on a medical bill?

Upcoding is when a hospital bills for a higher level of care than was actually provided. For example, billing CPT code 99285 (the highest complexity ER visit) when the actual visit was a routine 99282. This is one of the most common and costly billing errors on ER bills, and it is something we specifically check for in every review.

What does the No Surprises Act cover for ER bills?

The No Surprises Act protects patients from unexpected out-of-network charges at in-network facilities, including emergency rooms. In most cases, you cannot be billed more than your in-network cost-sharing amount for emergency care, regardless of which doctor treated you.

What billing errors are most common on ER bills?

The most common ER billing errors include: upcoding (billing a higher level of care than provided), unbundling (charging separately for services included in a flat rate), duplicate billing (charging twice for the same service), and errors in medication quantities or supply units.

How do I get an itemized bill from a hospital?

You have a legal right to an itemized medical bill. Contact the hospital billing department and specifically request an itemized statement and the UB-04 claim form. Under federal law, hospitals must provide your medical records within 30 days of a written request.

Emergency Room Billing Codes: CPT & HCPCS Guide (2026)

Understanding Emergency Room billing codes is essential for any patient who wants to audit their medical charges. These codes determine the level of care and the final price you are charged, making it critical to ensure they accurately reflect the treatment you received.

What Are ER Billing Codes?

ER billing codes are standardized alphanumeric strings (primarily CPT codes) used by hospitals to describe medical services and procedures. The most common are the Evaluation and Management (E/M) codes 99281 through 99285, which represent five levels of emergency department visit complexity.

CPT Codes 99281–99285: The 5 ER Visit Levels

CPT Code	Level	Description
99281	Level 1	ED visit level 1 — lowest complexity, minimal work-up
99282	Level 2	ED visit level 2 — low complexity with limited testing
99283	Level 3	ED visit level 3 — moderate complexity, more diagnostics
99284	Level 4	ED visit level 4 — higher complexity, broader differential
99285	Level 5	ED visit level 5 — highest complexity, serious conditions

Key Components Billed on an ER Visit

Facility Fees — the cost of the room and equipment
Professional Fees — the doctor's time and expertise
Laboratory & Diagnostic Services
Pharmacy & Supplies used during the visit

Why ER Billing Prices Differ

Even with standardized codes, the price for a "Level 4 ER Visit" (CPT 99284) can vary by thousands of dollars because each hospital sets its own base rate in its chargemaster.

Common Billing Code Issues to Watch For

Upcoding — billing for a higher level of care than provided
Unbundling — charging separately for items included in a flat rate
Duplicate billing — charging twice for the same service
Errors in units or quantities of medications/supplies

When to Question Your ER Bill

The level of care (99281–99285) seems too high for the visit
There are charges for services or medications you didn't receive
The total amount is significantly higher than expected
You suspect a billing error or "upcoding"

Get a free ER billing code review →