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CMS created these codes to enable virtual care for Medicare beneficiaries receiving home health services. Understanding the documentation requirements is critical as telehealth integration in home health continues to expand post-pandemic.
G0320 and G0321 are CMS HCPCS codes for telehealth-based remote patient monitoring in home health settings. G0320 covers the initial remote patient monitoring setup and evaluation, while G0321 covers subsequent monitoring visits. Both require documentation of the telehealth encounter, clinical findings, patient eligibility for home health services, and evidence that the virtual visit was medically necessary.
The COVID-19 pandemic accelerated telehealth adoption across healthcare, but home health presented unique challenges. CMS created G0320 and G0321 to enable home health agencies to deliver virtual care while maintaining quality standards and appropriate documentation. These codes represent CMS's effort to integrate telehealth into the home health benefit while controlling utilization.
Enable home health patients to receive skilled services without requiring an in-person visit for every encounter, particularly in rural or underserved areas.
By creating specific codes with time requirements, CMS ensures telehealth visits meet minimum standards rather than being quick check-ins.
Separate codes allow CMS to monitor how telehealth is being used in home health and adjust policies based on utilization data.
Many telehealth flexibilities from the pandemic have been made permanent or extended, but home health telehealth remains subject to specific limitations. CMS continues to evaluate appropriate use cases and may adjust policies. Providers should monitor CMS transmittals and Medicare Learning Network updates for changes.
Patient must be currently certified for Medicare home health with an active plan of care. The telehealth visit must relate to the certified conditions.
G0320: At least 30 minutes
G0321: At least 20 minutes
Document start time, end time, and total duration.
Must use synchronous, real-time audio AND video telecommunications. Audio-only visits do not qualify for these codes.
Document the clinical assessment performed, patient status review, care plan updates, and clinical decision-making during the visit.
Document that patient consented to receive care via telehealth for this encounter. Consent may be verbal but must be documented.
Proper coding depends on visit sequence:
A new home health certification period may trigger a new "initial" visit.
Patient must be under Medicare home health plan of care
G0320 requires 30+ minutes; G0321 requires 20+ minutes
Must be real-time audio AND video telecommunications
Visit must relate to certified home health diagnoses
Patient consent for telehealth must be documented
Using G0320 for follow-up visits or G0321 for initial
Post-pandemic telehealth expansion has led to increased CMS scrutiny of telehealth utilization patterns, particularly in home health.
Request your home health plan of care and all telehealth visit documentation
Verify time documentation shows the visit met minimum time requirements
Gather evidence and file an appeal within the required timeframe
If you received a telehealth visit from your home health agency, your Explanation of Benefits (EOB) may show G0320 or G0321 with descriptions like "home health telehealth" or similar. The EOB won't show details about what was discussed or assessed during the visit.
Important: Home health telehealth visits should be part of your overall home health episode. If you're seeing these codes but didn't participate in a video visit, you should request records to verify the service.
Shows your certified home health conditions
Clinical documentation from the video visit
Start and end times of the telehealth visit
Your telehealth consent documentation
G0320 and G0321 require real-time audio AND video. If you only had a phone call, these codes should not be billed. Request records to verify what technology was documented.
G0320 requires at least 30 minutes; G0321 requires at least 20 minutes. If your visit was shorter, request the time documentation to verify what was recorded versus your experience.
These codes can only be billed if you're certified for Medicare home health. If you're unsure of your home health status, request your plan of care (Form 485) to understand your certification.
Under 45 CFR § 164.524, you have the legal right to access all documentation related to your home health telehealth visits. This includes visit notes, time records, and consent forms. Providers must respond within 30 days.
Learn more about your access rightsMultiple documentation requirements (time, technology, eligibility, consent) create several potential points of failure for compliance.
Post-pandemic telehealth expansion has made home health telehealth a focus area for CMS program integrity efforts.
Requires technology infrastructure, staff training, workflow integration, and coordination between field staff and telehealth operations.
Telehealth platform logs may not match clinical documentation. Ensure systems are synchronized and time is documented consistently.
If video fails and visit continues audio-only, G0320/G0321 cannot be billed. Have protocols for handling technology failures.
Document why telehealth was appropriate for this patient and visit, not just that it occurred. Clinical judgment must support modality choice.
Track telehealth visit sequence within each home health episode. Using G0320 for follow-up visits or G0321 for initial visits triggers denials.
Virtual check-in codes for brief patient-initiated communications. Different from G0320/G0321 which are full telehealth visits.
View all G-Code guides →Complexity add-on for longitudinal care. May apply when home health telehealth is part of ongoing care coordination.
View G2211 Guide →New 2026 TEAM Remote E/M codes for primary care. Different from home health telehealth but part of CMS's telehealth expansion.
View TEAM Guide →RPM codes (99453-99458) may be used alongside home health telehealth when patients have qualifying monitoring devices.
View all G-Code guides →Understanding home health eligibility requirements is essential for G0320/G0321 compliance. Plan of care drives telehealth eligibility.
View all G-Code guides →G0320/G0321 denial? Learn how to build your appeal with proper documentation and records access.
View Denial Guide →G0320 and G0321 are Medicare codes for video visits with your home health agency.If you're receiving home health care (like skilled nursing or therapy visits in your home), your home health agency may also provide some visits by video call instead of coming to your house in person.
G0320 is used for the first video visit, and G0321 is used for follow-up video visits. These visits must be done with both audio and video—a phone call alone doesn't count. The visit must also be at least 20-30 minutes long, depending on whether it's your first or a follow-up visit.
If you see these codes on your Medicare statement, it means your home health agency billed for a video visit. You have the right to request your visit notes to see what was discussed and whether the service was provided as documented.
G0320 and G0321 are CMS HCPCS Level II codes for telehealth services provided to home health patients. G0320 covers the initial home health telehealth visit (at least 30 minutes), while G0321 covers subsequent telehealth visits (at least 20 minutes). These codes enable remote monitoring and virtual care for patients receiving home health services.
CMS requires documentation of: patient eligibility for home health services, the telehealth platform used, time spent on the encounter (minimum 30 minutes for G0320, 20 minutes for G0321), clinical assessment performed, care plan updates, and patient consent for telehealth services. The visit must be related to the home health plan of care.
Common denial reasons include: patient not currently under a home health plan of care, insufficient time documentation (below minimum thresholds), missing telehealth consent documentation, services not related to the certified home health condition, technology platform not meeting CMS requirements, and lack of documented clinical necessity.
No. The patient must be currently certified for Medicare home health services with an active plan of care. The telehealth visit must relate to the conditions for which home health was certified. Not all home health patients are appropriate candidates for telehealth, and clinical judgment must support the modality choice.
Request your home health plan of care, telehealth visit notes including start and end times, any remote monitoring data collected, care coordination notes, telehealth consent forms, and communication logs between your home health agency and physician. These records are essential for understanding what services were provided and appealing denied claims.
Disclaimer: This content is for informational purposes only and does not constitute billing advice. CMS policies change frequently. Always consult current CMS guidelines, your Medicare Administrative Contractor, and qualified healthcare compliance professionals for specific billing decisions.
Last updated: January 2025 | Sources: CMS HCPCS Level II, Medicare Home Health Conditions of Participation, CMS Transmittals