Cardiology telemedicine operates under a hybrid regulatory environment as of 2026. During the COVID-19 public health emergency, CMS and Congress expanded telehealth coverage substantially. Some of those expansions became permanent; others have sunset or expired.
Permanent flexibilities include home as originating site for behavioral health telehealth and expanded rural telehealth coverage. Non-behavioral-health telemedicine flexibilities have been extended by legislation in phases, and the status of specific flexibilities depends on the most recent congressional action. Practices should audit current telemedicine rules quarterly for each active service.
Standard telemedicine E&M coding
Standard office E&M codes (CPT 99202-99215) apply to real-time synchronous audio-video telemedicine visits. The visit is coded at the same level as an in-person equivalent based on MDM or time.
Place-of-service codes
- POS 02 — telemedicine provided other than in patient's home
- POS 10 — telemedicine provided in patient's home
- POS 11 — office (used by some commercial payers who accept modifier 95 with office POS)
The correct POS depends on the patient's physical location during the encounter and the payer's specific rules.
Modifier 95
Modifier 95 signals synchronous audio-video telemedicine. Applied to the E&M code (or to procedures where telemedicine is permissible). Some payers require the modifier; others infer telemedicine from the POS code.
Modifier 93
Modifier 93 signals synchronous audio-only telemedicine (telephone-only encounters). Applies to services that can be delivered by phone under payer rules. Used when video is not available or not required by the payer's coverage rules.
Cardiology-appropriate telemedicine visits
Typically appropriate for telemedicine
- Follow-up visits for stable cardiology patients (medication management, chronic disease monitoring)
- Post-procedure follow-up for uncomplicated cases
- Second-opinion consultations where physical exam is not central to the assessment
- Chronic disease monitoring for hypertension, atrial fibrillation, stable heart failure
Not appropriate for telemedicine
- Any procedure (ECG, echocardiography, stress testing, catheterization, device implantation)
- Initial evaluation for acute chest pain requiring physical exam
- Post-procedure follow-up requiring wound inspection
- Encounters requiring physical exam findings that materially affect clinical decisions
Remote patient monitoring code family
Remote patient monitoring (RPM) uses a separate code family from E&M telemedicine. RPM applies to cardiac device monitoring, heart failure home monitoring, and other cardiac chronic disease management with connected devices.
RPM codes
- CPT 99453 — initial setup and patient education for RPM device use, one-time per episode of care
- CPT 99454 — device supply with daily recording or programmed alert transmission, per 30 days
- CPT 99457 — RPM treatment management services, first 20 minutes of clinical staff or physician time per calendar month
- CPT 99458 — each additional 20 minutes per calendar month
Coverage requirements
- Patient has a qualifying chronic condition
- Device meets FDA definition of a medical device
- Data is electronically collected and transmitted
- Physician or qualified health professional reviews data and provides treatment management
Documentation requirements
- Initial setup and education (for 99453) documented once at initiation
- Device transmission history (for 99454) showing at least 16 days of data per 30-day period
- Treatment management time (for 99457, 99458) documented per calendar month with specific activities described
Remote cardiac device monitoring
Remote cardiac device monitoring uses a separate code family from RPM:
- CPT 93293 — pacemaker, transtelephonic rhythm strip evaluation
- CPT 93294 — pacemaker, remote monitoring with analysis, up to 90 days
- CPT 93295 — ICD, remote monitoring with analysis, up to 90 days
- CPT 93296 — remote programming or interrogation of pacemaker or ICD
These codes apply to implanted device monitoring specifically and follow their own MAC LCD frequency and coverage rules.
Coverage variation across payers
Medicare traditional (fee-for-service) telemedicine coverage rules are set by CMS with congressional adjustments. Medicare Advantage plans may have additional or different coverage rules. Commercial payer telemedicine coverage varies substantially:
- Some payers cover telemedicine broadly with parity to in-person
- Some payers cover telemedicine at reduced rates
- Some payers restrict telemedicine to specific service categories
- Some payers require modifier 95 or GT on all telemedicine claims
Audit each active payer's telemedicine coverage annually and confirm before submitting high-volume claims.
Documentation for telemedicine visits
Telemedicine encounter notes should include:
- Patient's physical location during the encounter (for POS determination)
- Modality (synchronous video, synchronous audio-only)
- Consent to telemedicine as required by state or payer rules
- Standard clinical documentation (history, MDM, plan)
- Time contribution if time-based coding is used
- Signature and date
Some state licensing rules require additional telemedicine-specific documentation (informed consent forms, geographic-scope acknowledgment). Verify state-specific requirements for the states where the practice sees telemedicine patients.
Audit considerations
Telemedicine billing has been a post-PHE audit focus area. Common audit findings:
- POS code inconsistent with patient's actual physical location during the encounter
- Modifier 95 applied without documentation supporting synchronous video (particularly when the encounter was actually telephone-only)
- E&M level higher than documentation supports (level selection rules apply the same as in-person)
- RPM billing without device transmission history supporting the 30-day billing period
Internal audit of telemedicine claims quarterly identifies gaps before external audit exposure develops. Documentation prompts in the electronic health record can automate capture of POS, modality, and consent elements.