Medicare Supervision Requirements: General, Direct, and Personal

Medicare supervision requirements come in three levels: general, direct, and personal. They describe how physically close the supervising physician or qualified practitioner must be while auxiliary staff perform an outpatient service or diagnostic test. General means the physician directs the work but need not be on-site. Direct means the physician must be in the office suite and immediately available to step in. Personal means the physician must be in the room the entire time. As of January 1, 2026, CMS permanently allows the “immediately available” element of direct supervision to be met through real-time, two-way audio and video technology for most non-surgical services.¹

CMS assigns each covered CPT code a supervision level, so the tier isn’t a judgment call at the point of service. Billing a code at a supervision level higher than what was actually provided is one of the fastest routes to a federal fraud investigation, so the practical stakes of these definitions are large.

General Supervision

General supervision is the lowest tier. Under 42 CFR 410.32(b)(3)(i), a service furnished under general supervision must occur under the physician’s overall direction and control, but the physician need not be in the building or even on-site while it is performed.² The ongoing obligations are to ensure that the non-physician personnel performing the test are properly trained and that the equipment is maintained correctly.

Most routine diagnostic tests payable under the physician fee schedule default to general supervision unless CMS has assigned a higher level. The physician sets the protocols, approves who runs them, and stays responsible for quality, even though someone else is physically doing the work.

The same standard reaches beyond diagnostics. Under 42 CFR 410.26, two categories of incident-to services require only general supervision rather than the default direct: designated care management services (such as chronic care management and transitional care management) and behavioral health services.³ The carve-out matters for practices that run these programs largely through clinical staff, because the supervising practitioner does not have to be in the suite.

Direct Supervision

Direct supervision is the default for most office-based and hospital outpatient services. Under 42 CFR 410.32(b)(3)(ii), the physician must be present in the office suite and immediately available to furnish assistance and direction throughout the entire service.² For hospital outpatient therapeutic services, 42 CFR 410.27 imposes the same core requirement: the supervising practitioner must be immediately available throughout the procedure.⁴ The physician does not have to watch, but must be close enough to walk in and take over.

What “Immediately Available” Means

CMS has deliberately not defined “immediately available” by a set number of minutes or feet. The test is functional: the supervising practitioner must have the immediate physical presence needed to intervene right away.⁵ CMS gives two situations that fail the test. A physician performing another procedure they cannot interrupt is not immediately available, even from the next room. A physician stationed so far away on the campus that they couldn’t reach the patient promptly also doesn’t qualify.⁶

The obligation extends past emergency response. The supervising practitioner must be able to take over the procedure, change the course of care, or provide additional orders, not simply respond to a crisis.⁶ A physician who could rush in during a cardiac arrest but is simultaneously running a complex case down the hall doesn’t meet the standard, because they can’t walk away from their own patient.

Virtual Direct Supervision Starting in 2026

Beginning January 1, 2026, CMS permanently amended the direct supervision definition to allow the supervising practitioner to satisfy the “immediately available” element through two-way, real-time audio and video communications technology, at 42 CFR 410.26(a)(2) and 42 CFR 410.32(b)(3)(ii).⁷ The technology must support both audio and live video; a phone call is not enough.³

Virtual presence does not mean the supervisor must be actively watching a live feed of the procedure the entire time. CMS clarified that the practitioner must be immediately reachable and able to engage through the audio-video link when needed.⁸

Not every service is eligible. Any service with a global surgery indicator of 010 or 090 is excluded, so those procedures still require in-person direct supervision. Services with a 000 global indicator remain eligible.¹ CMS also expects supervising practitioners to use professional judgment: eligibility for virtual supervision under a code doesn’t mean it’s clinically appropriate in every case.

The same virtual direct supervision flexibility applies in hospital outpatient departments and Critical Access Hospitals for pulmonary rehabilitation, cardiac rehabilitation, intensive cardiac rehabilitation, and diagnostic services, again excluding those with 010 or 090 global indicators.⁹

Personal Supervision

Personal supervision is the most restrictive tier. Under 42 CFR 410.32(b)(3)(iii), the physician must be in attendance in the room during the entire performance of the procedure.² Not down the hall. Not scrubbing in for the next case. In the room, the whole time. Stepping out breaks the requirement for that portion of the service and puts the claim at risk.

This tier is reserved for procedures where the risk of immediate patient harm is high enough that a trained technician working alone, even with a physician nearby, isn’t considered safe. Services designated for personal supervision include contrast studies of the brain and spine, myelography, various angiography and catheterization procedures, cardiac electrophysiology studies, transesophageal echocardiography, and certain allergy provocation tests.¹⁰

The virtual supervision flexibility that applies to direct supervision does not extend here. When the regulation says the physician must be “in attendance in the room,” it means physically in the room. There is no audio-video workaround for personal supervision.

Who Can Serve as the Supervising Practitioner

The supervisor doesn’t have to be a physician. Since January 1, 2021, nurse practitioners, clinical nurse specialists, certified nurse-midwives, certified registered nurse anesthetists, and physician assistants have been authorized to supervise diagnostic tests alongside physicians.¹¹ Non-physician practitioners can also supervise incident-to services and bill for them, though incident-to services supervised by an NPP reimburse at 85% of the physician fee schedule rate rather than 100%.¹²

State scope-of-practice law sits underneath the federal rule. Services must be furnished in accordance with applicable state law, and non-physician practitioners may only supervise services they are personally authorized to furnish under their state’s rules.⁴ Federal Medicare rules set the ceiling; state law can set a lower floor.

The supervisor also doesn’t have to be the patient’s usual treating provider. A covering physician present in the suite can serve as supervisor as long as they have the clinical knowledge and privileges to intervene.³

How Supervision Attaches to Incident-To Billing

When auxiliary staff furnish services under a physician’s direction, those services can often be billed as “incident to” the physician’s professional services, which reimburses at 100% of the physician fee schedule. The default supervision level for incident-to is direct: the physician or qualifying NPP must be in the office suite and immediately available during the service.¹²

Other conditions come with the incident-to pathway. The physician must have personally performed the initial service and remain actively involved in the patient’s ongoing course of treatment. The service must be one commonly furnished in the physician’s office or clinic and must represent an expense to the practice. Only the practitioner who actually supervises may bill the service; a physician who ordered it but was not present cannot claim it.¹²

One point that trips practices up: diagnostic tests cannot be billed incident-to. The diagnostic tests benefit category under the Social Security Act is a separate payment pathway, and supervision for diagnostic tests follows 42 CFR 410.32 rather than the incident-to rules.¹¹

Documentation and What Gets Lost in an Audit

Getting supervision right at the moment of care is only half the exposure. The other half is proving it later. Medicare contractors, Recovery Auditors, and the Unified Program Integrity Contractor can review any documentation tied to a claim, including medical records, billing logs, and scheduling data.

The medical record should identify the rendering provider, include dated and signed entries, and document the reason for the encounter, findings, diagnosis, and plan of care. For services billed under direct or personal supervision, the record should make clear who was supervising and that they were present or immediately available at the time. When virtual direct supervision is used, the record should reflect that audio-video technology was used and that the supervising practitioner was available through the link during the service. Practices that rely on a general sense that “the doctor was around” rather than documenting the supervisor for each encounter are the ones that lose audits.

The consequences stack quickly. CMS recoups every dollar paid on non-compliant claims, and the provider faces civil monetary penalties of up to $25,595 per false claim under the inflation-adjusted schedule.¹³ Where a pattern of false billing is shown, the False Claims Act adds treble damages on top of the per-claim penalties.¹⁴ If the paper can’t show the supervision that was billed, for reimbursement purposes it didn’t happen.

1
Federal Register. Medicare and Medicaid Programs; CY 2026 Payment Policies Under the Physician Fee Schedule and Other Changes to Part B Payment and Coverage Policies
2
eCFR. 42 CFR 410.32 – Diagnostic X-ray Tests, Diagnostic Laboratory Tests, and Other Diagnostic Tests: Conditions
3
eCFR. 42 CFR 410.26 – Services and Supplies Incident to a Physician’s Professional Services: Conditions
4
eCFR. 42 CFR 410.27 – Therapeutic Outpatient Hospital or CAH Services and Supplies Incident to a Physician’s or Nonphysician Practitioner’s Service: Conditions
5
Centers for Medicare & Medicaid Services. Medicare Benefit Policy Manual – Transmittal 128
6
Centers for Medicare & Medicaid Services. Medicare Benefit Policy Manual, Chapter 6 – Hospital Services Covered Under Part B
7
Centers for Medicare & Medicaid Services. Medicare Physician Fee Schedule Final Rule Summary CY 2026
8
Federal Register. Medicare and Medicaid Programs; CY 2024 Payment Policies Under the Physician Fee Schedule and Other Changes to Part B Payment and Coverage Policies
9
Federal Register. Medicare Program: Hospital Outpatient Prospective Payment and Ambulatory Surgical Center Payment Systems
10
Centers for Medicare & Medicaid Services. Independent Diagnostic Testing Facilities – Physician Supervision and Technician Requirements
11
Centers for Medicare & Medicaid Services. Supervision Requirements for Diagnostic Tests: Manual Update
12
Centers for Medicare & Medicaid Services. Incident To Services and Supplies
13
Federal Register. Annual Civil Monetary Penalties Inflation Adjustment
14
Centers for Medicare & Medicaid Services. Laws Against Health Care Fraud