Emergency Medicine Billing Services

Emergency departments treat everyone who arrives, no matter their coverage. That means a large share of visits come with no insurance, incomplete registration, or out-of-network status. Emergency medicine billing has to deal with these facts while still producing accurate, supportable claims.

Documentation drives payment. Visit level, critical care time, and procedures each depend on what the clinician wrote and when. Charts are often written quickly, and the details billers need can be missing. Westmont connects emergency physician groups, urgent facilities, and hospital-based ED teams with vetted billing experts who understand how ED claims are built and defended.

Who this is for

• Emergency physician groups
• Hospital-employed ED physicians and advanced practice providers
• Freestanding emergency departments
• Physician staffing groups covering multiple hospitals
• Critical access and rural hospital ED programs
• Facilities that need help with ED facility billing as well as professional billing

What gets billed

• Emergency department visits at five levels
• Critical care time for very ill or injured patients
• Laceration repair and wound care
• Fracture and dislocation care
• Emergency airway management and intubation
• Cardiopulmonary resuscitation
• ECG and imaging interpretations
• Central line placement and other bedside procedures
• Observation and discharge services
• Facility charges for emergency room visits, billed on a UB-04 claim

Commonly billed codes

Code	Type	What it covers
99281 to 99285	CPT	Emergency department visits, from level 1 to level 5
99291	CPT	Critical care, first 30 to 74 minutes
99292	CPT	Critical care, each additional 30 minutes
92950	CPT	Cardiopulmonary resuscitation
31500	CPT	Emergency breathing tube placement
12001	CPT	Simple repair of a small superficial wound
12031	CPT	Layered repair of a small wound on the scalp, trunk, or limbs
71045	CPT	Chest X-ray, single view
93010	CPT	ECG interpretation and report only
0450	Revenue code	Emergency room services on a facility claim
R07.9	ICD-10-CM	Chest pain, unspecified
R10.9	ICD-10-CM	Abdominal pain, unspecified

Note

Codes are examples for orientation, not a complete list, and do not guarantee coverage or payment. Always check current code sets and payer policy.

Billing challenges in emergency medicine

• Visit level selection. ED visit levels now depend on medical decision making. Documentation must show problems addressed, data reviewed, and risk. Billers audit charts, feed back to clinicians, and track level patterns against peers.
• Critical care documentation. Critical care requires time, and the time must exclude separately billed procedures. Billers look for clear time statements and the clinical reason, since payers often review these claims.
• Procedures with the visit. A procedure on the same day as a visit may need modifier 25 on the visit if the visit is a separate, significant service. Billers review the record before adding modifiers.
• Out-of-network claims. The No Surprises Act protects many patients from balance billing for emergency care, and it sets a process for payment disputes. Rules and deadlines are specific, so billers track them and check current federal guidance.
• Patient identity and registration. Missing insurance details cause delays and write-offs. Billers work with hospital registration, run eligibility checks after the visit, and follow up on retroactive coverage.
• High self-pay and Medicaid mix. Many ED patients are uninsured or on Medicaid. Billers prioritize accounts by expected payment and follow state Medicaid rules, including retroactive eligibility.
• Chart delays. Late or unsigned charts hold claims. Billers monitor open charts daily and flag missing items for physicians.
• Split between professional and facility billing. Professional claims use CMS-1500 style billing and facility claims use UB-04. Billers confirm that each claim matches its own rules and that services are not billed twice.

How Westmont can help

• Match your group with vetted billing experts experienced in emergency medicine
• Support end-to-end revenue cycle work, from registration data to payment posting
• Help with denial management, appeals, and out-of-network dispute support
• Assist with credentialing and payer enrollment for emergency physicians and advanced practice providers
• Review coding patterns and documentation habits that affect ED visit levels

Frequently asked questions

How are emergency room visits billed?

Professional services are billed by the physician group using ED visit codes, plus any procedures and interpretations. The hospital bills its own facility charge for the same visit. Patients may receive separate bills. Each claim has its own coding rules, so the physician and facility teams need to work from the same record.

What is critical care billing in the ED?

Critical care covers care for a patient with a life-threatening condition who needs high-level, constant attention. Billing rests on documented time and the nature of the illness. Time spent on separately billed procedures is not counted. Payers often review these claims, so notes should state time and clinical need.

Does the No Surprises Act apply to emergency care?

In general, yes. It limits what out-of-network emergency providers can bill many patients and creates a path for payers and providers to settle payment. Details depend on the plan type and situation, and guidance changes. Check current federal and state rules or ask a billing expert.

Why do ED claims get denied?

Common causes include missing insurance information, visit levels that payers question, lack of medical necessity, and bundled services. Some payers apply their own review of ED level. Strong documentation and fast follow-up on incomplete registrations help reduce denials.

Can ED physicians bill for X-ray and ECG readings?

Often yes, for the professional interpretation, if the physician documents a separate written interpretation and the payer allows it. The hospital usually bills the technical part. Check payer policy and watch for duplicate interpretation by radiology or cardiology.

Related billing services

• Urgent Care Billing
• Critical Care Billing
• Hospitalist Billing
• Trauma and Acute Care Surgery Billing
• Ambulance Billing
• Hospital Billing