Workers' Compensation Billing Services

Workers' compensation billing does not work like regular health insurance. The payer is usually the employer's carrier, not the patient's health plan. Each state sets its own rules, forms, and fee schedules. A claim may also be disputed, delayed, or denied until the carrier accepts the injury.

Because of that, workers' compensation billing involves more than codes. It needs claim numbers, authorizations, injury reports, and timely follow-up. Westmont Revenue Partners connects providers with vetted workers' compensation billing experts who work with state rules and carrier requirements every day.

Who this is for

• Occupational medicine and employer health clinics
• Orthopedic, pain management, and physical medicine practices treating injured workers
• Physical and occupational therapy providers
• Chiropractors who see work injury patients
• Urgent care centers with an occupational health line
• Practices in one state or across several states

What gets billed

• Initial injury evaluations and follow-up visits
• Physical therapy and occupational therapy sessions
• Diagnostic imaging for work injuries
• Injections and minor procedures
• Work-related disability and impairment exams
• Special reports and narrative reports requested by the carrier
• Work status and return-to-work paperwork
• Pain management and surgical care after authorization

Commonly billed codes

Code	Type	What it covers
99080	CPT	Special report, such as a detailed injury or workers' compensation report beyond routine forms
99455	CPT	Work-related or medical disability exam by the treating physician
99456	CPT	Work-related or medical disability exam by a physician other than the treating one
99213	CPT	Established patient office visit, low-level decision making or 20 minutes of total time
71046	CPT	Chest x-ray, at least two views
S13.4XXA	ICD-10-CM	Neck ligament sprain, initial encounter
M54.2	ICD-10-CM	Neck pain (cervicalgia)
Y99.0	ICD-10-CM	External cause status: civilian activity done for income or pay
12	Place of service	Patient's private home (for example, home-based work evaluations)

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 workers' compensation

State-by-state rules. Fee schedules, forms, and filing deadlines differ by state. A biller experienced in workers' compensation billing keeps a reference for each state you serve and checks it for updates.

Claim acceptance and disputes. The carrier may not yet have accepted the injury when treatment starts. Billers track claim status and hold or resubmit accordingly, instead of billing the patient's health plan by mistake.

Authorization and utilization review. Many carriers require approval for certain services. Billers check authorization before scheduled care and keep approval records tied to each visit.

Required forms and reports. Carriers often want specific progress notes, work status forms, or narrative reports. Billers attach them to the claim, and use special report codes only where a payer allows.

Claim identifiers. Claims usually need the claim number, date of injury, employer, and adjuster details. A missing field can stall payment. Billers verify these at intake.

Fee schedule payment and reductions. Carriers may pay by state fee schedule or apply bill review reductions. Billers compare each payment to the schedule and appeal where it looks wrong.

Slow payment and follow-up. Workers' compensation claims can take extra follow-up. Billers keep aging reports and contact adjusters on a set routine.

How Westmont can help

• Matching you with vetted billing experts experienced in workers' compensation claims
• End-to-end revenue cycle support, from authorization checks to payment posting
• Denial management and fee schedule dispute support
• Help with payer enrollment and credentialing questions
• Support for multi-state practices that need state-specific workflows

Frequently asked questions

How is workers' compensation billing different from regular medical billing?

The payer is typically the employer's carrier, not the patient's health insurer. Each state sets its own fee schedule, forms, and deadlines. Claims also need injury details, claim numbers, and often prior authorization. Patients usually should not be billed for covered work injury care, so confirm state rules.

What forms are used for workers' compensation claims?

Many carriers accept the CMS-1500 claim form, sometimes with state-specific attachments or reports. Some states require their own forms or electronic formats. Check your state workers' compensation board website for current requirements.

Do I need to follow a state fee schedule?

Many states publish a medical fee schedule that sets maximum payment. Some states use other methods, such as contracted rates. Look up your state's current schedule and confirm which services and dates it applies to.

Why do workers' compensation claims get denied?

Common reasons are an unaccepted claim, missing authorization, wrong claim number, late filing, or a dispute over whether the care relates to the work injury. Early checks at intake reduce these denials.

Can a billing company handle claims in several states?

Yes. Experienced billers can keep separate workflows for each state's forms and deadlines. Ask any billing partner how they track state changes before you sign on.

Related billing services

• Occupational Medicine
• Physical Therapy
• Chiropractic
• Pain Management
• Orthopedic Surgery
• Urgent Care