Medicare and Medicaid contractors increasingly flag telehealth claims based on three technical details that providers often treat as clerical afterthoughts: the modifier applied to the claim line, compliance with the originating site requirement, and the documentation supporting time-based coding. A telehealth billing audit typically starts with a data pattern: a modifier that does not match the place-of-service code, a spike in high-level time-based visits, or claims for audio-only care billed as though video had occurred. When a Medicare Administrative Contractor (MAC) or a state Medicaid program opens this kind of review, the provider faces a recoupment demand at minimum, and in more serious cases, referral for a fraud investigation. Understanding what these audits test, and what documentation defeats them, is the starting point for a defensible telehealth billing practice.
Modifiers That Identify a Telehealth Claim
Medicare relies mainly on the place-of-service code, not a modifier, to identify that a service was rendered by telehealth, but the modifier still matters for commercial payers and for specific program billing. Modifier 95 designates a synchronous, two-way audio-video encounter. Modifier 93 designates an audio-only encounter and is required on Medicare claims that bill a traditional evaluation and management code delivered entirely by phone. Modifier FQ applies to audio-only services billed by Federally Qualified Health Centers and Rural Health Clinics. Modifier GT, once the standard telehealth modifier, is now largely limited to Critical Access Hospitals billing under Method II. Applying modifier 95 to a visit conducted only by phone, or omitting modifier 93 on an audio-only claim, is among the most frequently cited technical errors in telehealth billing reviews.
The most common finding in a telehealth billing audit is a mismatch between the modifier or place-of-service code on the claim and what the clinical documentation actually shows, not a fraud scheme.
The Originating Site Requirement and Current Flexibilities
Medicare historically paid for telehealth only when the patient was physically located at a qualifying originating site, typically a rural healthcare facility, not the patient's home. Pandemic-era waivers suspended that geographic and site restriction, and Congress has repeatedly extended the suspension rather than letting it lapse. According to CMS's telehealth FAQ guidance, the waiver removing geographic and originating-site restrictions for most Medicare telehealth services has been extended through December 31, 2027. For behavioral and mental health telehealth, the Consolidated Appropriations Act, 2021 permanently removed the same restrictions, so a patient's home is a permanent originating site for that category regardless of any expiring waiver. Because the broader flexibility depends on legislation that has been extended in stages rather than made permanent, providers should confirm the current expiration date before relying on continued home-based billing. The place-of-service code on the claim, 02 for a site other than the patient's home and 10 for the patient's home, must match where the patient was actually located, and the two codes carry different payment rates.
Time-Based Coding and Documentation That Survives Audit
Many telehealth encounters are billed using codes selected by total time rather than by the complexity of medical decision-making. For these codes, the medical record must state the total time personally spent by the billing practitioner on the date of the encounter, recorded contemporaneously rather than reconstructed later. Audio-only visits carry an added documentation burden. Because audio-only coverage is more restricted than audio-video coverage for some payers, the record should reflect why the visit was conducted by phone rather than by video: patient preference, lack of technology, or a clinical circumstance that made video impractical. The record should also independently document the technology platform used, the location of the patient and the provider at the time of the encounter, and the patient's consent to a telehealth visit. Missing any one of these elements can convert an otherwise appropriate claim into a documentation-deficiency finding, even when the medical necessity of the visit is not in dispute.
Why Early Legal Counsel Is Critical
It is critical that telehealth providers promptly retain experienced healthcare defense counsel upon receiving a Medicare or Medicaid telehealth billing audit notice, a MAC records request, or any other government inquiry into telehealth claims. Early legal intervention can protect the provider's rights, ensure that responses to modifier, place-of-service, and time-documentation requests are accurate and complete, avoid inadvertent admissions in interviews or written responses, preserve relevant defenses, and allow counsel to communicate with investigators or auditors on the provider's behalf. Delaying legal representation can significantly affect the outcome of a telehealth billing audit and expose the provider to unnecessary recoupment, extrapolation, or referral risk.
How Health Law Alliance Can Help
Health Law Alliance defends telehealth providers, physicians, pharmacies, and behavioral health practices through Medicare and Medicaid telehealth billing audits, from the initial records request through appeal of any recoupment determination. We review claims for modifier accuracy, originating-site and place-of-service compliance, and time-based documentation before providers respond to a MAC or state Medicaid program, and we represent providers in administrative appeals and, where warranted, in related government investigations. If your practice has received a telehealth billing audit notice or a records request from a Medicare Administrative Contractor, contact us for a free, confidential consultation.
