Electronic Visit Verification is a system that electronically confirms a home visit actually happened as billed. It was made a federal requirement by section 12006 of the 21st Century Cures Act, which directed states to require EVV for Medicaid personal care services and home health care services delivered in the home.
The deadlines have passed. States had to require EVV for personal care services by 1 January 2020 and for home health care services by 1 January 2023. A state that made a good-faith effort and hit unavoidable delays could apply for an extension; otherwise, non-compliance carries incremental reductions to federal medical assistance percentage funding of up to one percent.
Those penalties land on the state, not on you. But they are the reason your state passes the requirement down as a condition of payment — and why a visit that cannot be billed is, in practice, a visit that cannot be billed.