Decoding “Incident to” Physician Services

The definition of “incident to” for physician services remains confusing.

Medicare uses the term “incident to” as shorthand for services that are “incident to a physician’s services.” The term would be confusing enough if its meaning was always the same, because conceptualizing what sorts of services are “incident to a physician’s services” isn’t easy. But the term is not used consistently. This article will describe the level of physician supervision required for services “incident to” in the clinic, and a follow-up will discuss the supervision requirements in the hospital.

The supervision requirements for services “incident to” in a clinic and in a hospital are different, despite the identical phraseology. The supervision requirements for services in the clinic are contained in two regulations: 42 CFR 410.26, plus the diagnostic test rule at 42 CFR 410.32(b)(3), to define “direct supervision.”

According to the rule, direct supervision in the office setting means the physician must be present in the office suite and immediately available to furnish assistance and direction throughout the performance of the procedure. It does not mean that the physician must be present in the room when the procedure is performed. Amazingly, the rule tells us more about what direct supervision is not than what it is. We know it does not require presence in the room, but what is the boundary of the office suite?

No regulation or even manual provision answers that question, so the bottom line is that we don’t know. I’ve often said that the physician should be able to reach the patient within about 30 seconds. I can’t point to legal authority for this assertion; I am relying on common sense. The only logical reasoning behind the supervision requirement is a patient safety issue. If the physician can be at the patient’s side within 30 seconds, it’s difficult to see how anyone could find fault with the level of supervision. 

To the best of my knowledge, the only other guidance from the Centers for Medicare & Medicaid Services (CMS) on the definition of “office suite” is found in a Federal Register entry issued Jan. 9, 1998. This text was in the preamble to a proposed rule that was never adopted. In other words, its regulatory significance would seem to be zero. But it at least offers some insight into what CMS thought “office suite” meant in 1998:

“We are not proposing that there must be any particular configuration of rooms for an office to qualify as an office ‘suite.’ However, direct supervision means that a physician must be in the office suite and immediately available to provide assistance and direction. Thus, a group of contiguous rooms should in most cases satisfy this requirement. We have been asked whether it would be possible for a physician to directly supervise a service furnished on a different floor. We think the answer would depend upon individual . . . circumstances that demonstrate that the physician is close at hand. The question of physician proximity for physician referral purposes, as well as for incident to purposes, is a decision that only the local carrier could make based on the layout of each group of offices. For example, a carrier might decide that in certain circumstances it is appropriate for one room of an office suite to be located on a different floor, such as when a physician practices on two floors of a townhouse.”

Based on that language, it is quite clear that there is no definitive definition of “office suite.” Until there is, I plan to stick by my 30-second test. I wouldn’t say that is etched in stone; 40 seconds may work too, but I would only feel comfortable defending situations in which the physician can reach the patient quickly. Some contractors have issued interpretations excluding any skyway or situations in which the physician is in an adjacent building. While the support for those positions is not entirely clear, I would not advocate for it, because it would be more difficult to argue that a different building is part of the same “office suite” than it would be to argue about a room on another floor of the same building.

When the postal address of the space is different, there is a heightened risk that the judge could conclude that the space isn’t part of the same “suite.” The lack of any more guidance from CMS, however, means that it is possible to defend many configurations.

Given the lack of detail, I would certainly be hesitant to refund money for any service if the physician was able to reach the patient in a short amount of time.

 

Program Note:

Listen to David Glaser every Monday on Monitor Mondays, 10-10:30 a.m. EDT.

 

Comment on this article

Facebook
Twitter
LinkedIn

David M. Glaser, Esq.

David M. Glaser is a shareholder in Fredrikson & Byron's Health Law Group. David assists clinics, hospitals, and other health care entities negotiate the maze of healthcare regulations, providing advice about risk management, reimbursement, and business planning issues. He has considerable experience in healthcare regulation and litigation, including compliance, criminal and civil fraud investigations, and reimbursement disputes. David's goal is to explain the government's enforcement position, and to analyze whether this position is supported by the law or represents government overreaching. David is a member of the RACmonitor editorial board and is a popular guest on Monitor Mondays.

Related Stories

Leave a Reply

Please log in to your account to comment on this article.

Featured Webcasts

Sepsis Sequencing in Focus: From Documentation to Defensible Coding

Sepsis sequencing continues to challenge even experienced coding and CDI professionals, with evolving guidelines, documentation gaps, and payer scrutiny driving denials and data inconsistencies. In this webcast, Payal Sinha, MBA, RHIA, CCDS, CDIP, CCS, CCS-P, CCDS-O, CRC, CRCR, provides clear guideline-based strategies to accurately code sepsis, severe sepsis, and septic shock, assign POA indicators, clarify the relationship between infection and organ dysfunction, and align documentation across teams. Attendees will gain practical tools to strengthen audit defensibility, improve first-pass accuracy, support appeal success, reduce denials, and ensure accurate quality reporting, empowering organizations to achieve consistent, compliant sepsis coding outcomes.

March 26, 2026
I022426_SQUARE

Fracture Care Coding: Reduce Denials Through Accurate Coding, Sequencing, and Modifier Use

Expert presenters Kathy Pride, RHIT, CPC, CCS-P, CPMA, and Brandi Russell, RHIA, CCS, COC, CPMA, break down complex fracture care coding rules, walk through correct modifier application (-25, -57, 54, 55), and clarify sequencing for initial and subsequent encounters. Attendees will gain the practical knowledge needed to submit clean claims, ensure compliance, and stay one step ahead of payer audits in 2026.

February 24, 2026
Mastering Principal Diagnosis: Coding Precision, Medical Necessity, and Quality Impact

Mastering Principal Diagnosis: Coding Precision, Medical Necessity, and Quality Impact

Accurately determining the principal diagnosis is critical for compliant billing, appropriate reimbursement, and valid quality reporting — yet it remains one of the most subjective and error-prone areas in inpatient coding. In this expert-led session, Cheryl Ericson, RN, MS, CCDS, CDIP, demystifies the complexities of principal diagnosis assignment, bridging the gap between coding rules and clinical reality. Learn how to strengthen your organization’s coding accuracy, reduce denials, and ensure your documentation supports true medical necessity.

December 3, 2025

Proactive Denial Management: Data-Driven Strategies to Prevent Revenue Loss

Denials continue to delay reimbursement, increase administrative burden, and threaten financial stability across healthcare organizations. This essential webcast tackles the root causes—rising payer scrutiny, fragmented workflows, inconsistent documentation, and underused analytics—and offers proven, data-driven strategies to prevent and overturn denials. Attendees will gain practical tools to strengthen documentation and coding accuracy, engage clinicians effectively, and leverage predictive analytics and AI to identify risks before they impact revenue. Through real-world case examples and actionable guidance, this session empowers coding, CDI, and revenue cycle professionals to shift from reactive appeals to proactive denial prevention and revenue protection.

November 25, 2025

Trending News

Featured Webcasts

Compliance for the Inpatient Psychiatric Facility (IPF-PPS): Minimizing Federal Audit Findings by Strengthening Best Practices

Federal auditors are intensifying their focus on inpatient psychiatric facilities, using advanced data analytics to spotlight outliers and pursue high‑dollar repayments. In this high‑impact webcast, Michael Calahan, PA, MBA, Compliance Officer and V.P., Hospital & Physician Compliance, breaks down what regulators are really targeting in IPF-PPS admissions, documentation, treatment and discharge planning. Attendees will learn practical steps to tighten processes, avoid common audit triggers and protect reimbursement and reduce the risk of multimillion-dollar repayment demands.

April 9, 2026

Mastering MDM for Accurate Professional Fee Coding

In this timely session, Stacey Shillito, CDIP, CPMA, CCS, CCS-P, CPEDC, COPC, breaks down the complexities of Medical Decision Making (MDM) documentation so providers can confidently capture the true complexity of their care. Attendees will learn practical, efficient strategies to ensure documentation aligns with current E/M guidelines, supports accurate coding, and reduces audit risk, all without adding to charting time.

March 31, 2026

The PEPPER Returns – Risk and Opportunity at Your Fingertips

Join Ronald Hirsch, MD, FACP, CHCQM for The PEPPER Returns – Risk and Opportunity at Your Fingertips, a practical webcast that demystifies the PEPPER and shows you how to turn complex claims data into actionable insights. Dr. Hirsch will explain how to interpret key measures, identify compliance risks, uncover missed revenue opportunities, and understand new updates in the PEPPER, all to help your organization stay ahead of audits and use this powerful data proactively.

March 19, 2026

Top 10 Audit Targets for 2026-2027 for Hospitals & Physicians: Protect Your Revenue

Stay ahead of the 2026-2027 audit surge with “Top 10 Audit Targets for 2026-2027 for Hospitals & Physicians: Protect Your Revenue,” a high-impact webcast led by Michael Calahan, PA, MBA. This concise session gives hospitals and physicians clear insight into the most likely federal audit targets, such as E/M services, split/shared and critical care, observation and admissions, device credits, and Two-Midnight Rule changes, and shows how to tighten documentation, coding, and internal processes to reduce denials, recoupments, and penalties. Attendees walk away with practical best practices to protect revenue, strengthen compliance, and better prepare their teams for inevitable audits.

January 29, 2026

Trending News

Happy National Doctor’s Day! Learn how to get a complimentary webcast on ‘Decoding Social Admissions’ as a token of our heartfelt appreciation! Click here to learn more →

CYBER WEEK IS HERE! Don’t miss your chance to get 20% off now until Dec. 1 with code CYBER25

CYBER WEEK IS HERE! Don’t miss your chance to get 20% off now until Dec. 2 with code CYBER24