Pass Through Billing: What to Know and How to Avoid It

Pass through billing is a complex issue that can expose healthcare providers to serious compliance risks. To help you steer clear of these potential hazards, let’s explore what pass through billing is, how to avoid it, and how to recognize legitimate billing practices that may resemble it. By understanding these nuances, your can protect your organizations, ensure billing integrity, and continue delivering high-quality care without compromising compliance.

What is pass through billing?

Pass through billing is a reimbursement practice where a provider bills for services that were actually performed by a third-party provider, rather than by their own staff.

While pass through billing isn’t always illegal, it becomes a major compliance risk when it’s used to obscure who actually delivered the service or to charge higher rates than what was paid to the third-party provider. In many cases, payers will not reimburse claims which use pass through billing, making costs higher for patients and providers.

For example, if an organization hires an outside provider but submits claims under its own provider number without proper disclosure or documentation, this could trigger audits, penalties, or repayment demands. Even if the clinical services were appropriate and medically necessary, billing transparency is essential to ensure reimbursement integrity and avoid legal exposure.

To stay compliant, providers must understand payer rules, state regulations, and documentation requirements surrounding subcontracted services. In some cases, pass through billing is only allowed if the billing provider supervises the care, maintains medical records, or meets certain credentialing criteria.

When is it not pass through billing?

Not all contracted services are considered pass through billing. In fact, there are legitimate, compliant scenarios where billing for third-party services is allowed — provided that specific requirements are met.

For example, many facilities rely on independent contractors or outside agencies to deliver specialized care. When these services are integrated into the organization’s care model and meet payer-specific conditions, billing under the agency’s name may be entirely appropriate.

One key distinction is oversight and integration. If the contracted provider operates under the supervision of the ordering provider and the service is billed by the ordering physician, this may not constitute pass through billing.

In short, billing for third-party services isn’t automatically a red flag. What matters most is whether the services are clinically appropriate, properly documented, and billed in accordance with payer rules.

How to avoid pass through billing

Avoiding pass through billing starts with understanding what it is — and recognizing where your organization may be at risk. In simple terms, pass through billing occurs when an agency bills for services provided by an outside or third-party provider as if those services were rendered by its own staff. This can lead to significant compliance violations if not handled properly.

To prevent unintentional pass through billing, organizations must implement clear internal protocols when contracting for third-party services.

• Review payer-specific guidelines, particularly for Medicaid and managed care plans, and ensure all staff are up to date on these regulations.
• Ensure that any contracted providers are properly credentialed, supervised (if required), and clearly documented in both clinical and billing records.
• Conduct regular internal audits and provide staff training on compliance best practices. Billing teams, program managers, and executive leadership should all understand the risks and rules associated with subcontracted services.
• Work with legal and billing compliance experts to assess your organization’s contracts and workflows. A proactive compliance strategy not only protects against pass through billing violations but also supports long-term billing integrity and financial sustainability.

In short, avoiding pass through billing isn’t just about avoiding penalties — it’s about building a culture of accountability in how services are delivered and documented.