What emergency medicine billing services must handle
Emergency medicine billing services start after care, not before it. Patients arrive without appointments, many cannot give complete insurance details, and the visit is coded from documentation written under pressure. Fastora's certified billing and coding professionals support emergency physician groups and freestanding emergency rooms as part of our broader medical billing services.
Volume adds to the challenge. An ED group may send hundreds of claims a day, each with a visit level, possible procedures and a diagnosis that has to support urgency. Small gaps in registration or documentation repeat across every shift, so fixes usually belong in the workflow rather than in one-off appeals.
Eligibility and coverage discovery after the visit
Hospital emergency departments must screen and stabilize patients regardless of insurance under EMTALA, so registration data is often partial. We run insurance eligibility checks after the visit, search for active coverage the patient did not mention, and check for retroactive Medicaid before any balance is treated as self-pay.
Contact details taken at triage often change. Where the facility shares registration updates, we pull corrected addresses and policy numbers before claims or statements go out, which helps reduce returned mail and rejected claims.
Authorization rules for emergency care
Under the Affordable Care Act and the No Surprises Act, group health plans generally cannot require prior authorization for emergency services, and coverage is judged by a prudent layperson standard rather than the final diagnosis. A chest pain visit that ends in a reflux diagnosis can still qualify as an emergency.
Some plans still ask for notification when a patient is admitted from the ED, which the facility usually handles. Follow-up services after stabilization, such as outpatient imaging or specialist visits, may need ordinary prior authorization.
Emergency physician billing codes and rules specific to this specialty
| Code | Descriptor (summary) | Billing note |
|---|---|---|
| 99281 | Emergency department visit that may not require the presence of a physician or other qualified health care professional | Lowest ED level |
| 99282–99285 | Emergency department visit, straightforward, low, moderate or high medical decision-making | Level set by MDM; time does not apply |
| 99291 | Critical care, evaluation and management, first 30–74 minutes | Time documented, excluding separately billed procedures |
| 99292 | Critical care, each additional 30 minutes | Add-on to 99291; Medicare counts time differently from CPT |
| Modifier 25 | Significant, separately identifiable E/M service on the same day as a procedure | Used on the ED visit when a procedure is also billed |
Emergency physician billing turns on medical decision-making: the number and complexity of problems, the data reviewed and the risk of management. Procedures such as laceration repair, splinting or incision and drainage are billed in addition to the visit, with modifier 25 on the E/M when the note shows a separate evaluation.
For Medicare, CMS counts the first critical care add-on only after 104 total minutes, a stricter threshold than the CPT reading of the add-on. CMS also allows an ED visit and critical care on the same day by the same practitioner only when the ED visit came first, before the patient needed critical care, with modifier 25 on the claim. Check commercial contracts, since many follow CPT.
Freestanding emergency room billing in Texas
Texas licenses freestanding emergency medical care facilities under Health and Safety Code Chapter 254. Some are hospital outpatient departments that bill as part of their parent hospital; others are independent and licensed on their own. That distinction drives freestanding emergency room billing, because the facility's status decides which payers it can bill and how.
Independent freestanding ERs that are not part of a hospital generally cannot enroll in Medicare to bill facility services. CMS allowed a temporary exception during the COVID-19 public health emergency, so confirm current status before billing a Medicare patient. Texas law also requires licensed facilities to give patients a written disclosure statement covering their fees and the health plans they participate with.
For freestanding ER billing in Texas, the professional and facility sides need to agree on the patient, date, diagnosis and network status. When the facility is out of network, both claims fall under the surprise billing rules below.
Surprise billing, documentation and out-of-network claims
The No Surprises Act covers emergency services in hospital emergency departments and independent freestanding emergency departments. Patients pay in-network cost sharing and cannot be balance billed. Payment disputes start with a 30-business-day open negotiation period after the initial payment or denial, then can move to federal independent dispute resolution.
For state-regulated plans, Texas SB 1264 (2019) bars balance billing for out-of-network emergency care and sends payment disputes to the state's mediation or arbitration process run through the Texas Department of Insurance. Which law applies depends on the plan type, so each out-of-network claim is tagged by plan before it is worked.
Strong notes protect each claim: chief complaint, the differential considered, tests ordered and reviewed, and the decision to admit, observe or discharge. Critical care notes need total time and the organ system at risk.
Common denials and how we prevent them
| Denial | Typical cause | Prevention step |
|---|---|---|
| Downcoded visit level | Note does not show the MDM for level 4 or 5 | Level reviewed against the note before submission |
| Modifier 25 denial | No separate evaluation documented beyond the procedure | Modifier applied only when the note supports it |
| Critical care denied | Time missing, or ED visit and critical care billed without support | Time and sequence checked on every critical care claim |
| Coverage terminated | Old insurance captured at triage | Coverage discovery after each visit |
| Diagnosis not urgent | Final diagnosis billed without presenting symptoms | Symptoms coded where they support the emergency |
Every claim passes our Advanced Pre-Submission Claim Review before it is sent. Denials that still occur go to ED denial follow-up, and open balances are worked by payer and age, with self-pay statements sent on a steady schedule through patient billing.
Credentialing for emergency physicians and facilities
Emergency physicians enroll individually and reassign benefits to their group, and many groups staff several sites. Each new physician needs enrollment with every payer used at each site before shifts can be billed in network, so start dates have to be planned around payer timelines.
Our credentialing and enrollment service tracks each file through a nine-stage process, from document collection and NPI and CAQH setup to payer applications, follow-ups and final approval.
How Fastora supports ER billing services
Fastora works inside your existing EHR/PM system under the user access you grant, with no software to install and no hidden setup fees. You get a dedicated account contact, transparent dashboards, monthly performance reporting and a monthly review call.
Fees are quoted after a free assessment, and you can read how our pricing models work first. To see how your current emergency department billing services perform, request a free billing assessment.
Freestanding and hospital-based emergency groups that also staff observation and perioperative care should review anaesthesia billing and urgent care billing for related facility rules.
Emergency medicine medical billing from an ER billing company
As an ER billing company, we run emergency medicine medical billing for hospital ED groups and freestanding emergency departments. ED claims move on triage-level coding, facility-plus-professional claim coordination, and fast payer follow-up — ED volumes do not forgive a slow A/R process. We verify eligibility at registration feeds, keep facility and professional charges reconciled to the same encounter, and work denials on the timelines ED contracts require. Related: urgent care billing, EMS billing services, free medical billing audit.