Most ER billing teams know the No Surprises Act exists. Fewer actually follow it correctly. The gap between awareness and execution is where claims get disputed, audits start, and patient complaints turn into federal complaints.
The following blog is a comprehensive guide for providers who want to close that gap before it costs them.
What the No Surprises Act Actually Requires in the ER
The NSA went into effect on January 1, 2022. For emergency departments, it prohibits balance billing out-of-network patients beyond their in-network cost-sharing amount. That much, most teams know.
What gets missed is the rest. CMS requires providers to:
- Deliver a good faith cost estimate before or after an emergency visit upon patient request
- Notify out-of-network patients of their rights in plain language
- Obtain signed consent before charging out-of-network rates for non-emergency services that happen during an ER visit
- Follow independent dispute resolution (IDR) timelines when a payer underpays
The consent requirement is the one most facilities overlook entirely.
Where ER Billing Teams Are Quietly Falling Short
The disclosure notice is the first failure point.
Under NSA rules, patients must receive written notice of their out-of-network status and their right to use in-network providers. In an emergency, you cannot require that consent upfront. But the moment the patient is stabilized and a non-emergency service is added, that changes. Most billing teams do not have a trigger for that shift.
The second gap is good-faith estimates.
The law requires a good-faith estimate (GFE) when a patient requests one. Many facilities have no documented process to respond to that request within the required timeframe. It sits as a vague policy no one owns.
The third is consent.
Getting a patient to sign a consent to waive NSA protections for out-of-network care requires specific language. Generic financial consent forms do not satisfy the requirement. Using one anyway is a compliance violation.
Facility Fees and Physician Fees Are Not the Same Problem
When a patient gets two bills from one ER visit, the facility fee comes on a UB-04. The physician’s fee comes on a CMS-1500. Two forms, two billing entities, two separate NSA obligations.
The bill type for emergency room facility charges on a UB-04 is typically 131. That covers an outpatient hospital emergency visit. The physician group billing separately uses professional claim formats and codes the E/M visit independently.
This matters for NSA compliance because the disclosure requirement applies to both. If the physician group is out-of-network but the hospital is in-network, the physician group carries its own obligation to notify the patient. Most hospital billing departments assume the facility notice covers everyone. It does not.
Emergency Room Billing Levels and the Audit Connection
How Billing Levels Are Assigned
ER visits are coded on a scale of 1 to 5. Level 1 is a minor visit. Level 5 is a high-complexity case. Under CPT codes 99281 through 99285, the level assigned must reflect the documented medical decision-making or the total time spent.
What Actually Triggers an Audit
Overcoding is the obvious audit trigger. But undercoding draws attention too. A pattern of low-level coding across a high-volume ER signals to payers that documentation practices are inconsistent. Both patterns invite scrutiny.
Where Billing Levels Meet IDR
The NSA adds a layer. When a claim enters IDR dispute, the supporting documentation for the billed level becomes evidence. If the coding does not match the notes, the arbitrator notices. Clean E/M level assignment is not just a billing best practice anymore. It is a dispute resolution asset.
The Independent Dispute Resolution Process Most Providers Ignore
When a payer pays below the qualifying payment amount and the provider disagrees, IDR is the federal mechanism to resolve it. Most ER billing teams are either unaware of it or assume it is too burdensome to use.
The timeline is tight. Providers have 30 business days from receiving the initial payment to open negotiation. If that fails, they have four business days to initiate IDR. Miss those windows and the right to dispute is gone.
The process requires a certified IDR entity. The provider submits their offer, the payer submits theirs, and the arbitrator picks one. No splitting the difference. The arbitrator weighs the qualifying payment amount, the provider’s market rate, and clinical complexity. Detailed documentation of the visit level matters here more than anywhere else in the billing cycle.
Most providers are leaving money on the table by not using this process at all.
What a Compliant ER Billing Workflow Actually Looks Like
Start with patient status. The moment a patient’s condition is stable and additional services are considered, someone on the care team needs to flag it for billing. That flag should trigger a check on payer network status.
If the treating physician is out-of-network, the disclosure notice goes out before the additional service. Not after. Not at discharge. Before.
Consent documentation gets filed separately from the general financial consent. It needs to reference the specific service, the out-of-network status, and the patient’s right to refuse and seek an in-network provider.
At the billing stage, the UB-04 and CMS-1500 each get reviewed for NSA compliance independently. The E/M level gets cross-checked against the physician notes before submission.
If a payer disputes or underpays, the 30-day clock starts immediately. Assign someone to own that clock.
Before anything else, audit your disclosure process. That is where most facilities are exposed right now. The GFE process and IDR timelines matter, but a missing or generic disclosure notice is the fastest path to a federal complaint under the NSA.
Most ER billing teams are managing too many moving parts to catch every compliance gap alone. If your facility requires assistance from experts operating in your local neighborhood, Rhode Island Medical Billing specializes in keeping ER providers compliant and paid correctly.
FAQ
How does billing work at the ER?
The facility bills for the visit using a UB-04, while the treating physician bills separately on a CMS-1500, each with independent coding and compliance obligations.
What is a typical emergency room bill?
It varies widely based on visit complexity, but patients often receive two separate bills — one from the hospital and one from the physician group.
Do you actually have to pay ER bills?
Yes, but the No Surprises Act limits how much out-of-network providers can charge, capping patient cost-sharing at the in-network rate in most emergency situations.
Do ER doctors bill separately?
Yes. ER physicians are often independent contractors, not hospital employees, so their group bills separately from the facility.