Understanding Incident-To Billing Best Practices

Thank you for attending our recent webinar on Incident-To Billing 

Below is a consolidated summary of key questions and answers from the session. This reference is designed to help you navigate the nuances of Incident-To billing rules, from supervision requirements to documentation best practices.  

Some assumptions were made when the proposed question did not provide all necessary details.  To obtain guidance for a specific situation, contact Healthicity’s advisory services. 

Who May Perform Services Incident-To a Physician/NPP?

Q: Can RNs (or MAs) furnish nurse-visit-type services incident to? 
A: Yes. RNs, MAs, LPNs, techs, genetic counselors, etc., qualify as auxiliary personnel under direct supervision and within state scope. They don’t enroll in Medicare. 

Q: Do NPs/PAs qualify? 
A: Yes, they may bill services performed by auxiliary personnel incident-to under their own NPI.  

Q: Does CMS recognize medical assistants? 
A: Yes. CMS includes MAs as auxiliary personnel under incident-to. 

 

Settings Where Incident-To Can / Cannot Be Used

Q: Physician office / urgent-care suite (POS 11 or 20) 
A: Yes, if all requirements are met. Urgent-care clinics billing PFS are treated like offices.
 
Q: Same-building / two-story clinic 
A: Yes, as long as it's the same address and suite with supervising physician immediately available.
 
Q: Assisted-living / patient home 
A: Potentially. It depends on the circumstances and services provided.
 
 
Q: FQHCs / RHCs 
A: Not applicable. These are paid under all-inclusive PPS.
 
Q: Hospital outpatient departments 
A: No. Incident-to does not apply in hospital outpatient settings. 

 

Supervision Requirements

Q: Direct vs. general supervision 
A: Most services require direct supervision. Some behavioral-health and care-management services allow general supervision.
 
Q: Virtual direct supervision 
A: In many circumstances, two-way A/V supervision is allowed through CY 2025. 

Q: Multiple locations / being 'immediately available' 
A: Physicians must be able to intervene immediately. Keep a log.
 
Q: Group practices 
A: Any physician/NPP under the same TIN may supervise.

 

Documentation & Signature

Q: How detailed must the plan of care be? 
A: Include diagnosis, treatment goals, and intent for follow-up by NPP or auxiliary personnel. 

Q: Is a co-signature mandatory? 
A: CMS does not require one, but check with your MAC. 

Q: Recommended verbiage 
A: Examples: 'incident to Dr. Smith’s plan dated 3/1/25', 'Dr. Smith on-site.' 

Q: Proving active involvement 
A: Use periodic physician touch-points and save supervision logs. 

Billing Mechanics

Q: New vs. established patients 
A: Incident-to never applies to new patients or new problems for which a plan of care has not already been developed. 

Q: Rendering provider on the claim 
A: When incident to rules are met, use supervising provider’s NPI for reimbursement. 

Q: Scenario example 
A: Established DM patient seen by NP incident-to a physician plan—bill under physician if all other incident-to rules are met.
 

Behavioral-Health and Care-Management Nuances

Q: Behavioral health and care-management services 
A: General supervision is allowed for many BH services. All other incident-to rules still apply. 

Q: Psychotherapy codes 
A: Bill psychotherapy unless MD documents a distinct E/M service. Keep in mind state licensing and scope of practice laws that only allow certain licensed personnel to perform psychotherapy. 

Regulatory Citations and Where to Look Up 'General Supervision'

Q: Regulatory citations 
A: 42 CFR § 410.26, Medicare Benefit Policy Manual Ch. 15, CY 2025 PFS Rule, and FQHC/RHC Manual Ch. 13. 

 

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