Telehealth Billing Requirements: Codes, Payers, and Compliance

Telehealth billing sits at the intersection of evolving federal policy, payer-specific coverage rules, and a coding framework that differs meaningfully from in-person care. This page covers the core procedural codes, modifier requirements, originating site rules, and payer distinctions that govern how telehealth services are billed across Medicare, Medicaid, and commercial insurance in the United States. Accurate telehealth billing depends on understanding both the statutory definitions established by the Centers for Medicare & Medicaid Services (CMS) and the independent coverage policies each payer maintains.

Definition and scope

Telehealth, as defined by CMS under 42 CFR §410.78, refers to covered professional consultations, office visits, and other medical services delivered via interactive, two-way telecommunications technology. The definition encompasses three primary service modalities:

1. Synchronous telehealth — real-time, two-way audio-video communication between a provider and patient.
2. Asynchronous telehealth (store-and-forward) — transmission of recorded health information (images, data) reviewed by a clinician at a later time; not broadly reimbursable under Medicare except in specific programs (e.g., Federal Telemedicine Demonstration Programs in Alaska and Hawaii).
3. Audio-only visits — telephone-based encounters without video; covered under distinct CPT codes and subject to separate payer policies.

The scope of billable telehealth services is not universal across payers. Medicare publishes an annual Telehealth Services List that enumerates approved HCPCS and CPT codes for the program year. Services not on that list are not eligible for Medicare telehealth reimbursement, regardless of how they are delivered.

For a broader orientation to how codes function within this framework, see Medical Billing Codes Overview and CPT Code Categories.

How it works

Telehealth billing follows the same foundational workflow as in-person billing but requires additional data elements — notably place of service codes and modifiers — to signal the nature of the encounter to payers.

Place of Service (POS) Codes

CMS assigns specific Place of Service codes to telehealth encounters:

• POS 02 — telehealth provided other than in a patient's home
• POS 10 — telehealth provided in the patient's home (effective for dates of service on or after January 1, 2022, per CMS MLN Matters SE21006)

The distinction between POS 02 and POS 10 affects the applicable facility and non-facility fee schedule rates. Non-facility rates — which are higher — apply when POS 10 is used, reflecting the absence of a facility overhead contribution.

Modifiers

Telehealth claims require modifier appended to the CPT or HCPCS code to alert payers to the service delivery method. Key modifiers include:

• Modifier 95 — synchronous telemedicine service rendered via real-time interactive audio and video telecommunications system (American Medical Association CPT guidelines)
• Modifier GT — via interactive audio and video telecommunications systems; used primarily on HCPCS codes and for Medicare claims in certain contexts
• Modifier 93 — synchronous telemedicine service rendered via telephone or other real-time interactive audio-only telecommunications system

Modifier selection depends on payer type, service category, and whether audio-video or audio-only technology was used. Incorrect modifier assignment is a leading cause of telehealth claim denials (claim denial management).

Originating Site Rules

Under pre-2020 Medicare rules, patients were required to receive telehealth services from an approved originating site (a clinical facility, not their home) located in a rural Health Professional Shortage Area or outside a Metropolitan Statistical Area. Originating site facility fees were billed using HCPCS Q3014.

The Consolidated Appropriations Act, 2019 (enacted February 15, 2019) expanded telehealth access for Medicare Advantage plans and included provisions allowing certain mental health services to be furnished via telehealth, representing an early legislative step toward broadening originating site flexibility before the pandemic-era waivers. The Coronavirus Aid, Relief, and Economic Security (CARES) Act of 2020 and subsequent legislation extended waivers permitting the patient's home as an eligible originating site. The Further Consolidated Appropriations Act, 2024 (enacted March 23, 2024) extended these telehealth flexibilities through December 31, 2024, including the waiver of originating site restrictions that would otherwise limit patients to rural or clinical facility locations. Practitioners must verify the applicable rule period against CMS annual rulemaking documents and monitor Congressional action for any subsequent extensions beyond December 31, 2024.

Common scenarios

Scenario 1: Medicare fee-for-service synchronous visit
A physician conducts a new patient office visit via video. The claim uses CPT 99203 (or appropriate E/M level per Evaluation and Management Coding), POS 10, and Modifier 95. The non-facility fee schedule rate applies.

Scenario 2: Medicare mental health telehealth
Mental health services under Medicare carry additional requirements. The Consolidated Appropriations Act, 2019 (enacted February 15, 2019) included early provisions expanding Medicare telehealth for mental health services, laying groundwork for subsequent legislative expansions. The Further Consolidated Appropriations Act, 2024 (effective March 23, 2024) extended the requirement — originally established by the Consolidated Appropriations Act, 2023 — for an in-person visit within 6 months prior to and at least every 12 months during ongoing telehealth mental health treatment through December 31, 2024. Relevant CPT codes align with the Mental Health Billing Codes framework.

Scenario 3: Medicaid telehealth
Medicaid telehealth coverage is state-administered. All 50 states and the District of Columbia have enacted some form of telehealth coverage policy (National Telehealth Policy Resource Center, CCHPCA), but reimbursement rates, eligible providers, and covered modalities vary. For Medicaid-specific billing structures, see Medical Billing for Medicaid.

Scenario 4: Commercial insurance
Commercial payer telehealth policies are governed by individual plan contracts and state parity laws. As of 2023, 43 states and the District of Columbia had enacted telehealth payment parity laws requiring commercial insurers to reimburse telehealth at rates equal to in-person services for covered services (Center for Connected Health Policy, 2023 State Telehealth Laws Report). Prior authorization requirements for telehealth may differ from in-person equivalents — see Prior Authorization Requirements.

Decision boundaries

Understanding which rules govern a specific telehealth claim requires resolving four sequential classification questions:

1. Payer type — Medicare fee-for-service, Medicare Advantage, Medicaid (which state), or commercial/private plan. Each operates under distinct authority. Medicare Advantage Billing plans, for example, set their own telehealth policies within CMS floor requirements and may not follow Part B rules identically.

2. Service modality — synchronous audio-video, audio-only, or asynchronous store-and-forward. Modality determines modifier, eligible CPT/HCPCS codes, and applicable fee schedule.

3. Service type — whether the specific CPT or HCPCS code appears on the payer's approved telehealth list. A code valid for in-person billing is not automatically valid for telehealth billing.

4. Patient location and provider location — originating site rules, state licensure requirements, and applicable POS code all depend on where the patient physically is at the time of service.

Medicare vs. Commercial: Key Distinctions

Billing claims that cross these classification boundaries — such as applying Medicare modifiers to a commercial claim — produce systematic denials and may trigger medical billing audit compliance scrutiny. Documentation of the telecommunications technology used, the patient's physical location, and the provider's physical location must be preserved in the medical record to support claims in the event of a payer audit.

HIPAA compliance in medical billing obligations apply to telehealth encounters identically to in-person encounters; the medium of service delivery does not alter Privacy Rule or Security Rule requirements for protected health information transmitted or stored during the encounter.

References

• Centers for Medicare & Medicaid Services — Telehealth Services
• 42 CFR §410.78 — Telehealth Services (eCFR)
• CMS Place of Service Code Set
• CMS MLN Matters SE21006 — Telehealth Place of Service Code 10
• Center for Connected Health Policy (CCHPCA) — State Telehealth Laws and Reimbursement Policies Report
• American Medical Association — CPT Telehealth Modifier Guidelines
• Consolidated Appropriations Act, 2019, Pub. L. 116-6 (enacted February 15, 2019)
• Further Consolidated Appropriations Act, 2024, Pub. L. 118-47 (enacted March 23, 2024)