Incident to Billing Blog

What is “Incident to” Billing?

In healthcare billing and coding, incident to billing allows non-physician practitioners (NPPs)—such as nurse practitioners (NPs), physician assistants (PAs), or clinical staff—to provide services under a physician’s supervision while billing under the physician’s National Provider Identifier (NPI).

This enables reimbursement at 100% of the Medicare Physician Fee Schedule, instead of the reduced NPP rate (typically 85%).

Medicare Requirements for “Incident to” Billing

  • Physician-Initiated Plan of Care: Physician must first see the patient, establish diagnosis, and create a care plan. NPPs follow that plan for subsequent visits.
  • Direct Supervision: Physician must be physically present in the office suite and available for immediate assistance. Remote supervision does not qualify.
  • Employment Relationship: NPP or staff must be employed by or contracted with the same group as the physician.
  • Documentation: Records must show physician’s initial involvement, ongoing care plan, and NPP-provided service.

Benefits of “Incident to” Services

  • Higher Reimbursement Rates – 100% instead of 85%.
  • Better Patient Access – NPPs handle follow-ups, freeing physicians for complex cases.
  • Efficient Workflows – Delegates routine care without reducing practice revenue.

Common Mistakes That Trigger Denials or Audits

  • Billing incident to when the physician never initiated the care plan.
  • Failing the direct supervision rule.
  • NPPs addressing new conditions without physician involvement.
  • Poor documentation linking service back to the physician.

Compliance Tips for Healthcare Practices

  • Provide regular incident to billing training for staff.
  • Use EHR templates that prompt required documentation.
  • Perform internal audits to ensure compliance.
  • Bill under the NPP’s NPI if all conditions aren’t met.

FAQs About Incident to Billing

1. What does “incident to” mean in medical billing? +
It refers to services provided by NPPs under a physician’s supervision, billed under the physician’s NPI for full reimbursement.
2. Can nurse practitioners bill incident to? +
Yes, but only if all Medicare requirements are met, including physician-initiated care and direct supervision.
3. What is the reimbursement rate? +
100% of the Medicare Physician Fee Schedule when billed correctly, versus 85% under the NPP’s NPI.
4. Does telehealth qualify? +
No. Direct in-person supervision is required.
5. What if rules are not followed? +
The claim should be billed under the NPP’s NPI at 85%. Incorrect billing risks denials, audits, or penalties.