EVV (Electronic Visit Verification)
Electronic Visit Verification (EVV) is technology that electronically confirms that a home visit occurred, capturing who delivered the service, to whom, where, and when. The 21st Century Cures Act of 2016 required states to implement EVV for Medicaid-funded personal care services and home health services, and each state administers its own EVV program with its own systems and rules.
Where EVV comes from and who it applies to
Section 12006 of the 21st Century Cures Act required state Medicaid programs to implement EVV for personal care services by January 1, 2020 (with good-faith-effort extensions into 2021) and for home health services by January 1, 2023. States that fail to comply face reductions in federal Medicaid matching funds, which is why enforcement runs through the states rather than through providers directly. The mandate covers Medicaid-funded services, including managed Medicaid and many HCBS waiver programs. Traditional Medicare does not require EVV, so a Medicare-certified agency's EVV obligations depend on its Medicaid and Medicaid managed care book of business and on each state where it operates.
The six required data elements
Federal law defines what every EVV system must capture:
- Type of service performed
- Individual receiving the service
- Date of the service
- Location of service delivery
- Individual providing the service
- Time the service begins and ends
Most systems capture these through a mobile app with GPS, telephony from the patient's home phone, or a fixed device in the home. States and payers layer their own rules on top, such as geofencing tolerances, reason codes for manual edits, and timeliness standards for corrections.
State models vary, and that is the hard part
Because EVV is state-administered, there is no single national workflow. Some states run a closed model with one state-contracted EVV vendor all providers must use. Others run an open or provider-choice model where agencies use their own EVV-capable system and submit records to a state aggregator. Managed care organizations sometimes add their own requirements on top of the state's. For agencies operating across state lines or billing multiple Medicaid MCOs, the same visit may need to satisfy different matching rules, which makes EVV primarily an operations and integration problem rather than a clinical one.
Common pitfalls and how to avoid them
Most EVV failures are preventable. Visits logged outside the geofence because the patient met the aide at a community location, clock-ins forgotten at arrival, schedules in the EHR that do not match the authorization on file, and manual edits missing required reason codes all lead to unmatched visits, and unmatched visits become unpaid claims. Strong agencies reconcile EVV exceptions daily rather than at billing time, train field staff on correct clock-in habits during onboarding, and integrate EVV data with scheduling so discrepancies surface the same day. Treat the EVV exception queue like a cash queue, because that is what it is.
Frequently asked questions
Does Medicare require EVV for home health visits?
No. The Cures Act EVV mandate applies to Medicaid-funded personal care and home health services. However, many Medicare-certified agencies also serve Medicaid and Medicaid managed care patients, and those visits are subject to the EVV rules of each state and payer.
What happens if a visit is not EVV-verified?
An unverified or unmatched visit typically cannot be billed to Medicaid until it is corrected with appropriate documentation and reason codes. Persistent EVV noncompliance can trigger claim denials, recoupments, and audit attention from the state or its managed care plans.
Can an agency use its own EVV system instead of the state's?
It depends on the state's model. Open or provider-choice states allow agencies to use any compliant system that submits data to the state aggregator. Closed-model states require the state-contracted vendor, though some allow alternate systems that pass certification. Check each state Medicaid agency's EVV policy.