Incident-To Billing: The Revenue Is Real. So Is the Documentation Risk.Insights

The rules changed in 2026. Where the supervising physician can be has moved. What has to be documented has not.

Billing an advanced practice provider's services under the physician's NPI pays at the full physician rate rather than the reduced rate. The difference is material across a year, which is why practices use it. It is also conditional, and the conditions are where audits land.

One of those conditions changed this year, and a good deal of published guidance has not caught up.

For Medicare, direct supervision no longer requires the supervising practitioner to be physically present in the office suite. In the CY 2026 Physician Fee Schedule Final Rule, CMS permanently adopted a definition of direct supervision that allows the supervising practitioner to be immediately available through real-time, two-way audio and video technology. Audio-only does not qualify. The change took effect on 1 January 2026 and is codified in the incident-to rules at 42 CFR 410.26.

There is an exception worth knowing: virtual direct supervision is not permitted for services assigned a 10-day or 90-day global surgery indicator. Those still require the traditional standard.

This is a genuine operational change. A physician supervising from another location, or from home, can satisfy the requirement for most office-based incident-to services, provided the connection is live and they are genuinely immediately available. It does not change anything else about incident-to.

• An initial service by the physician or qualified practitioner. Incident-to does not apply to a new patient, or to the visit at which a problem is first evaluated.
• An established plan of care that the physician created, which the APP is following rather than changing.
• Active involvement by the physician in the ongoing course of treatment.
• Applicable supervision, now satisfiable in person or virtually for most office services.
• Documentation in the record for that encounter showing which practitioner supervised and how.

Commercial payers do not all follow Medicare on incident-to, and several have not adopted the virtual supervision standard at all. Medicaid programmes vary by state, and state scope-of-practice rules sit on top of both. A policy built entirely on the Medicare rule will be wrong for part of your payer mix.

Establish the payer-by-payer position before you build the workflow, not after a recoupment letter arrives.

Rarely in the clinical care. Almost always in one of three places.

An attestation template fires on every APP encounter, including those where no supervision occurred. A statement that appears universally is evidence of a template rather than evidence of supervision. With virtual supervision this matters more, not less, because the record now needs to show who supervised and by what means.

An established patient presents with a new problem. The visit is billed incident-to because the patient is established, but the problem is not, and the plan of care for it did not exist before the APP created it.

Nobody can reconstruct who was supervising. Schedules, time-off records, encounter timestamps and now connection records are what an auditor compares. If they disagree, the documentation does not survive.

There are two defensible positions. Bill under the APP's own NPI as the default, accept the reduced rate, and remove the exposure. Or use incident-to where it genuinely applies, with the controls to support it: a supervision record that names the supervising practitioner and the method, a clear rule for what happens when a new problem appears, and a payer matrix showing where the policy does and does not apply.

What is not defensible is using it by default and assuming the documentation will hold. The lookback period on a recoupment is long enough to turn a habit into a number.

We work on the operational side of this — the workflow, the documentation standard, the payer matrix and the audit. Where legal interpretation is required, we work alongside your compliance counsel. Nothing here is legal advice, and rules change; confirm the current position for your payers before setting policy.