Medicare, Medicare Advantage plans, state Medicaid programs, and commercial insurers each apply their own rules for how a telehealth claim must be marked, and a biller who uses the wrong billing modifier or place-of-service (POS) code risks more than a denial. Modifier 95, the retired GT modifier, the audio-only FQ and 93 modifiers, and POS codes 02 and 10 each signal something different about how and where a service was delivered, and a mismatch between the code and the underlying encounter can misrepresent whether the service qualifies for telehealth reimbursement at all. Payers do not treat that mismatch the same way, and a pattern of miscoded claims is a documented trigger for post-payment review.
Medicare's Current Modifier and Place-of-Service Rules
Per CMS's December 2025 Telehealth & Remote Monitoring booklet, a professional claim under traditional Medicare identifies a telehealth encounter primarily through the place-of-service code, not a modifier. POS 02 marks a patient located somewhere other than home; POS 10, effective since January 1, 2024, marks a patient in their home and pays the higher non-facility Physician Fee Schedule rate. Modifier 95 remains required for institutional billing of outpatient therapy visits that hospital-employed physical therapists, occupational therapists, and speech-language pathologists deliver by telehealth. Modifier GQ is narrower still, limited to asynchronous store-and-forward telehealth under the federal telemedicine demonstration projects in Alaska and Hawaii, and modifier GT, retired for ordinary Part B claims in 2018, survives only on Critical Access Hospital Method II institutional claims.
Audio-Only and Supervision Modifiers Add Another Layer
For behavioral and mental health telehealth billed by rural health clinics and federally qualified health centers, CMS instructs providers to use modifier 95 for a two-way audio-video visit and modifier FQ or 93 for an audio-only visit, since a beneficiary may not be able or willing to use video. A separate modifier, FR, marks something else entirely: that a supervising practitioner satisfied Medicare's direct-supervision immediate-availability requirement virtually, through real-time two-way audio and video, a policy CMS made permanent for calendar year 2026. FR does not identify the visit itself as telehealth. Confusing a supervision modifier with a service-delivery modifier misstates the claim in a different way than confusing POS 02 with POS 10, but both errors change what the claim represents.
Medicare Advantage, Medicaid, and Commercial Payers Diverge
Traditional Medicare's shift toward POS-based coding has not been adopted uniformly elsewhere. Medicare Advantage plans and commercial payers frequently continue to require modifier 95, and in some cases modifier GT, on claim types that traditional Medicare now tracks through the POS code alone. State Medicaid programs set telehealth billing rules independently of Medicare and of each other, publishing their own provider manuals covering which modifiers, POS codes, and originating-site rules apply. A provider's Medicare billing habits do not transfer to a Medicaid or commercial claim for the same encounter. For more on originating-site and time-based coding rules alongside these modifiers, see our companion article on telehealth billing audits.
The modifier and the place-of-service code are not paperwork. Together they represent where and how the service happened, and a payer that finds a pattern of mismatches treats it as a billing-integrity question, not a clerical one.
Why a Coding Mismatch Becomes an Audit
Federal oversight of virtual-care billing has intensified. In April 2026, the HHS Office of Inspector General found more than $2.2 million in potentially improper Medicare payments tied to coding and timing errors on virtual check-in and e-visit claims, and recommended CMS strengthen the safeguards that catch this kind of mismatch before payment. A Unified Program Integrity Contractor (UPIC) or a Medicare Administrative Contractor reviewing a telehealth claims pattern reads a wrong modifier or POS code as a signal that the service, the setting, or the reimbursement rate has been misrepresented. The exposure runs from a recoupment demand for the improperly billed rate difference to, where the pattern looks intentional, a False Claims Act referral.
Why Early Legal Counsel Is Critical
It is critical that telehealth providers retain experienced healthcare defense counsel promptly upon receiving an audit notice, a payer inquiry, or a recoupment demand tied to telehealth billing. Early legal intervention can protect the provider's rights, ensure appropriate responses to payer and government requests, avoid inadvertent admissions, and preserve relevant defenses. Delaying legal representation can significantly affect the outcome of a matter and expose the provider to unnecessary risk.
How Health Law Alliance Can Help
Health Law Alliance has represented 2,500+ clients over 25+ years, including telehealth providers facing payer audits and recoupment demands tied to modifier and place-of-service coding. Our telehealth defense attorneys review claims history before a payer opens an audit, respond to recoupment demands, and defend providers once a coding dispute becomes a program-integrity matter. Contact Health Law Alliance for a free, confidential consultation.
