Modifier GT (Telehealth, archived)
HCPCS modifier historically used to indicate interactive audio-and-video telehealth services; largely replaced by POS 02/10 + modifier 95 for many payers.
1 min read · Last reviewed May 23, 2026
At a glance
- Category
- Telehealth
- Primary sources
- 1
- Workspace handoff
- ask d3 →
Where this comes up
Telehealth coding, place-of-service, modifier (95, GT, GQ, FQ, FR), and post-PHE policy parity all converge here. State licensure rules and DEA controlled-substance prescribing rules add a second compliance layer most billers learn about only after the first denial.
Full definition
What it is in practice
CMS phased out GT for most Medicare professional billing in 2017 in favor of POS-based telehealth identification. Some institutional and commercial-payer contexts still use it.
How it shows up in your practice
Confirm each payer's current preference. The modifier landscape continues to evolve post-PHE.
Sources
- CMS — Medicare Telehealth Services Listhttps://www.cms.gov/medicare/coverage/telehealth/list-services
Confirm GT vs 95 usage in Ask D3
Open ask d3 →Related terms
- TelehealthTelehealthDelivery of health care services through audio-video or audio-only technology when the patient is not at the same location as the practitioner.
- TelehealthModifier 95CPT modifier indicating a synchronous telemedicine service rendered via real-time interactive audio and video.
- TelehealthTelehealth POS Codes (02 and 10)Place of Service 02 (telehealth other than home) and POS 10 (telehealth in patient's home) identify telehealth encounters on professional claims.
D3rx is a healthcare-billing and compliance research aid maintained by D3rx Inc. Articles are drafted by an LLM (Anthropic Claude) against primary HHS, OCR, CMS, eCFR, NIST, and state-regulator publications, and reviewed for restraint and source fidelity by the D3rx team.
Reviewer status: a named credentialed reviewer (CHC, CHPC, or healthcare attorney) is being engaged. Until that engagement is finalized, this page does not claim credentialed review.
Related across the archive
- GlossaryModifier 95CPT modifier indicating a synchronous telemedicine service rendered via real-time interactive audio and video.
- GlossaryTelehealthDelivery of health care services through audio-video or audio-only technology when the patient is not at the same location as the practitioner.
- GlossaryTelehealth POS Codes (02 and 10)Place of Service 02 (telehealth other than home) and POS 10 (telehealth in patient's home) identify telehealth encounters on professional claims.
- GlossaryModifier GQ (Asynchronous Telehealth)HCPCS modifier indicating asynchronous (store-and-forward) telecommunications technology was used for the telehealth service.
- GlossaryAudio-Only TelehealthTelehealth services delivered via telephone or other audio-only technology, without a video component.
- GlossaryDistant SiteUnder Medicare telehealth rules, the location of the practitioner delivering the telehealth service.
- GlossaryModifier 93 (Audio-Only Synchronous Telehealth)CPT modifier indicating a synchronous telemedicine service rendered via audio-only technology.
- RegulationMLN: Medicare Telehealth ServicesReference to Medicare's telehealth policy: covered services list, originating and distant site rules, technology requirements, and the COVID-era flexibilities and their post-PHE status.
This glossary entry is a research aid for billing and compliance staff. It does not provide legal, medical, or financial advice and does not replace counsel. References cited link to primary sources at HHS, OCR, CMS, eCFR, NIST, and the relevant payer or industry body.