> ## Documentation Index
> Fetch the complete documentation index at: https://mso.getlemma.com/llms.txt
> Use this file to discover all available pages before exploring further.

# The No Surprises Act, briefly

> Where the No Surprises Act bites an MSO-PC group: out-of-network emergency and facility-based care, good faith estimates for self-pay patients, and the independent dispute resolution process.

The **No Surprises Act**, enacted as part of the Consolidated Appropriations Act, 2021, restricts balance billing in specified out-of-network situations and requires **good faith estimates** for uninsured and self-pay patients. For most outpatient MSO-PC groups it is a "know when this applies to you" statute rather than a daily operational constraint, but the good faith estimate requirement reaches any practice with self-pay patients.

The Act's implementing regulations and the independent dispute resolution process have been the subject of repeated litigation and rulemaking since 2021. Verify current requirements and IDR procedures with counsel or current agency guidance before relying on specifics.

## What it covers

Three main protections:<sup>1</sup>

### 1. Emergency services

Out-of-network emergency services are subject to balance billing protections. The patient's cost-sharing is calculated as if the care were in-network, and the provider generally may not bill the patient for the balance.

Applies regardless of the facility's or provider's network status.

### 2. Non-emergency services by out-of-network providers at in-network facilities

The classic surprise bill: a patient goes to an in-network hospital and is treated by an out-of-network anesthesiologist, radiologist, pathologist, or assistant surgeon they never chose.

Protections apply, and for certain ancillary service categories the patient **cannot waive** them through notice-and-consent.

### 3. Good faith estimates for uninsured and self-pay patients

The provision with the broadest reach for ordinary outpatient practices.

Providers must furnish a **good faith estimate** of expected charges to uninsured and self-pay individuals who schedule an item or service or who request an estimate. The estimate covers the primary item or service and reasonably expected related items and services.

## Where it bites an MSO-PC group

| Situation                                                         | Applies?                                           |
| ----------------------------------------------------------------- | -------------------------------------------------- |
| Out-of-network group providing services at an in-network facility | **Yes**, this is the core case                     |
| Emergency medicine, anesthesia, radiology, pathology groups       | **Yes**, the specialties the Act was written about |
| Any practice with uninsured or self-pay patients                  | **Yes**, good faith estimates                      |
| Fully in-network outpatient office practice, insured patients     | Mostly not, beyond GFE for self-pay                |
| Cash-pay only practices                                           | **Yes**, good faith estimates                      |

<Note>
  💉 **Med spas** and other cash-pay practices frequently assume the Act doesn't reach them because they don't bill insurance. The **good faith estimate** requirement applies to self-pay patients regardless of whether you contract with payers.
</Note>

<Note>
  🩺 **Hospital-based specialties**, emergency medicine, anesthesiology, radiology, pathology, and hospitalist groups are the specialties most directly affected, and MSO-PC structures are common in exactly those specialties.
</Note>

## Good faith estimates in practice

What a GFE generally must include:

* Patient name and date of birth
* A description of the primary item or service, and the scheduled date
* An itemized list of items and services reasonably expected, grouped by provider or facility
* Applicable diagnosis and service codes with expected charges
* Provider and facility names, NPIs, and TINs
* A disclaimer that the estimate is not a contract and that actual charges may differ

Timing requirements are keyed to when the service is scheduled or the estimate is requested, with shorter windows for near-term scheduling. Confirm the current timing rules.

There is also a **patient-provider dispute resolution** process available where billed charges substantially exceed the estimate.

<Tip>
  **Build the GFE into scheduling, not into billing.** It is triggered by scheduling or a request, not by a claim. Practices that treat it as a billing function generate them late or not at all.
</Tip>

## The IDR process

Where the Act applies and the provider and plan disagree on the out-of-network rate, the balance is resolved between them, not with the patient, through an **independent dispute resolution** process, after an open negotiation period.

Structurally: each side submits an offer, and the certified IDR entity selects one of them (a "baseball arbitration" format) considering specified factors.

The process has been repeatedly litigated, particularly regarding the weight given to the qualifying payment amount, and administrative fees and batching rules have changed. If you operate in an affected specialty, treat IDR strategy as a specialist function and verify current procedure.

## What to do about it

**If you're a fully in-network outpatient practice:**

* Implement good faith estimates for self-pay and uninsured patients
* Understand that in-network balance billing was already prohibited by your contracts
* Otherwise, monitor rather than build

**If you're out-of-network anywhere, or hospital-based:**

* Map which of your service lines and facilities trigger protections
* Implement notice-and-consent where it is available, noting it is unavailable for certain ancillary categories
* Build the IDR workflow: track deadlines, prepare offers, and decide whether to handle in-house or engage a specialist
* Model the revenue impact; for some out-of-network models the Act changes the economics materially

**Everyone:**

* Verify state law too. Many states had surprise-billing statutes before the federal Act, and the interaction between state and federal rules depends on plan type and state law. Self-funded ERISA plans are generally governed by the federal framework; fully-insured plans may be subject to a state process. See [Payers vs insurance companies](/concepts/payments/payers-vs-insurance-companies).

## Sources

1. No Surprises Act, Consolidated Appropriations Act, 2021, Pub. L. 116-260, div. BB, tit. I. CMS, [No Surprises Act overview](https://www.cms.gov/nosurprises) and [Good Faith Estimates](https://www.cms.gov/nosurprises/policies-and-resources/overview-of-rules-fact-sheets). Implementing regulations at 45 C.F.R. pts. 149, 150 and parallel provisions. Verify current requirements — the regulations and IDR process have been repeatedly amended and litigated.


## Related topics

- [Run patient statements and balances](/guides/billing/manage-patient-statements.md)
- [File appeals](/guides/billing/file-appeals.md)
- [Deductibles, copays, coinsurance, and patient balances](/concepts/payments/patient-responsibility.md)
- [Payers vs insurance companies (they're not synonyms)](/concepts/payments/payers-vs-insurance-companies.md)
- [Underpayments, fee schedules, and payer contracts](/concepts/payments/underpayments-and-contracts.md)
- [How to use the payer reference](/reference/payers/overview.md)