Federal Compliance

What Is EVV? Complete Guide for Home Care Agencies

Electronic Visit Verification is federally required for all personal care and home health services billed to Medicaid. If a visit doesn't have compliant EVV data, the claim denies. This guide covers the mandate, the six required data elements, how state systems differ, what EVV exceptions are, and how to keep exceptions from costing you revenue every billing cycle.

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The Short Answer

EVV Is How Medicaid Verifies That Home Care Visits Actually Happened

EVV stands for Electronic Visit Verification. It is a technology system that records, in real time, when a caregiver begins and ends a home care visit, who the caregiver is, who the client is, what type of service was provided, and where the visit took place. The federal government required all states to implement EVV for Medicaid-funded personal care services starting in 2020, and for home health services starting in 2023.

The short version of why this matters for your agency: if your caregiver doesn't clock in and clock out through your EVV system, or if the EVV data captured for a visit has an error, that visit generates an exception. Unresolved exceptions cannot be billed. Claims submitted without compliant EVV data are denied. The revenue from those visits is either delayed — if you resolve the exception and resubmit in time — or lost — if the exception sits unresolved until the timely filing deadline passes.

For a new agency owner, EVV is a compliance requirement to be set up before the first visit. For an experienced agency owner, EVV exceptions are a weekly operational reality that requires a consistent process to manage. This guide covers both starting points.

The Federal Mandate

The 21st Century Cures Act and What It Requires

Congress passed the 21st Century Cures Act in December 2016. Section 12006 of that act requires all states to implement Electronic Visit Verification for Medicaid-funded personal care services and home health services. The mandate was driven by documented program integrity concerns — studies showing significant overbilling and fraudulent billing for home care visits that never occurred or were delivered by someone other than the billed provider.

The EVV mandate required personal care services to come into compliance by January 1, 2020, and home health services by January 1, 2023. States that did not implement EVV on time faced a penalty — a reduction in their federal Medicaid matching funds — though CMS granted extensions to states that could demonstrate good-faith progress. Most states are now in active enforcement, though the specific EVV systems and compliance standards continue to vary significantly.

For agencies, the mandate is simple: every personal care and home health visit billed to Medicaid must have compliant EVV data. No exceptions. No grace periods for individual visits. A claim without EVV data — or with incomplete or non-compliant EVV data — is an invalid claim. For a complete state-by-state breakdown of EVV systems and requirements, see the CareBravo EVV compliance function.

What EVV Captures

The Six Data Elements Required by Federal Law

Federal law specifies exactly what EVV must capture for every visit. All six elements must be present and compliant — a visit with even one missing element generates an exception and cannot be billed until the exception is resolved.

Element 1

Type of Service

The service code or service type identifying what was provided during the visit — personal care assistance, homemaker service, respite care, and so on. This must match the authorized service type for the client. Delivering one service type while the authorization covers a different type creates both an EVV data mismatch and a billing issue.

Element 2

Individual Receiving the Service

The Medicaid beneficiary — the client receiving care. Typically captured through the client's Medicaid ID or a client identifier in the EVV system. The client receiving care must match the client on the authorization and the claim. A caregiver clocking in at the wrong client's home creates both an EVV exception and a potential compliance issue.

Element 3

Individual Providing the Service

The caregiver delivering the visit. Captured through the caregiver's login credentials in the EVV system — typically a phone app with unique credentials per caregiver. A caregiver clocking in under another caregiver's credentials is a compliance violation and a program integrity risk, in addition to creating an EVV data error.

Element 4

Date of Service

The calendar date on which the visit occurred. Captured automatically by the EVV system at the time of clock-in. Date errors — visiting on the wrong day, or a clock-in that crosses midnight — can create authorization mismatches or date-of-service discrepancies on the claim.

Element 5

Location of Service

Where the visit took place. Captured through GPS coordinates at the time of clock-in, or through an alternative method (fixed-location phone verification, landline, or manual attestation) where GPS is not feasible. The location must match the client's authorized service address. Location exceptions — GPS placing the visit at a different address — are among the most common EVV exceptions and must be resolved with documentation explaining the discrepancy.

Element 6

Start and End Time

When the visit began and when it ended. Used to calculate the number of units (15-minute increments in most billing systems) that can be billed. The time captured by EVV is the controlling record — if the caregiver clocked in 20 minutes late, the billable time begins at clock-in, not at the scheduled start time. A clock-in that occurs at the wrong time, or a missing clock-out, is the most common source of EVV exceptions in most agencies.

State EVV Models

Open, Hybrid, and State-Mandated — Why Your State's Model Matters

States implement EVV through one of three models, and the model your state uses determines which systems you can use, what you pay for, and how much technical flexibility you have in connecting EVV to your billing workflow.

Open Model

The state sets technical requirements and allows providers to select any EVV system that meets those specifications. The agency purchases, implements, and operates its own EVV software. This gives agencies the most flexibility to choose a system that integrates well with their existing scheduling and billing workflow. The tradeoff is cost — the agency bears the cost of the system — and the responsibility of demonstrating compliance with state technical requirements. Common in states that want to avoid a single-vendor dependency.

State-Managed (Closed) Model

The state contracts with a single EVV vendor and provides that system to all Medicaid home care providers at no charge. Agencies use the state's system rather than choosing their own. The system is typically provided through a state portal and a caregiver-facing mobile app. This reduces agency cost but limits flexibility — the system may not integrate directly with your scheduling or billing software, requiring manual data transfers. Texas HHAeXchange and Georgia's NetSmart Tellus system are examples of state-managed EVV implementations.

Hybrid Model

The state provides a free state-managed EVV system as the default option but allows providers to use their own compliant EVV system if they can demonstrate technical compatibility with the state's data aggregator — the system that collects and validates EVV data from all sources. Agencies that want more flexibility than the state system offers can apply to use an alternative system, provided it meets the state's technical specifications and data submission requirements. This is the most common model in larger managed care states.

In managed care states, the situation is more complex: the state may use one EVV model, but individual MCOs may have additional EVV requirements layered on top of the state requirements. Before selecting or setting up your EVV system, confirm requirements with both the state Medicaid agency and each MCO you plan to contract with.

EVV Exceptions

What EVV Exceptions Are and Why They Require a Weekly Process

An EVV exception occurs when a visit record is flagged because one of the six required data elements is missing, inconsistent, or falls outside expected parameters. Exceptions are not billing denials — yet. They are flags requiring human review and resolution before the visit can be billed. An unresolved exception is an unbillable visit.

The most common EVV exceptions in home care agencies:

Missed Clock-In

The caregiver forgot to clock in through the EVV app at the start of the visit. The visit has a clock-out but no clock-in, or no EVV record at all. Resolution requires the caregiver to document the actual visit start time with a written explanation, supervisor review, and correction in the EVV system according to state protocols. Most states require supervisor attestation for missed clock-ins.

Missed Clock-Out

The caregiver forgot to clock out at the end of the visit. The EVV system has a clock-in with no corresponding clock-out, or the clock-out was recorded hours later. Resolution requires the caregiver to document the actual visit end time. Bills should reflect actual time worked, not the time the clock-out was finally recorded. This is a common exception and should be resolved the same day when possible.

Location Mismatch

The GPS coordinates captured at clock-in place the caregiver at a different location than the client's authorized service address. This happens when GPS is imprecise in rural areas or inside large buildings, when the client temporarily relocated (hospital stay, family member's home), or when the caregiver clocked in before arriving at the client's home. Resolution requires documentation of the actual visit location and, if the client was at a different location, confirmation that the alternative location was appropriate under the client's care plan.

Visit Outside Authorized Hours

The EVV record shows the visit occurred outside the scheduled or authorized time window — either before the authorized start time, after the authorized end time, or on a day not covered by the current authorization. Resolution requires confirmation of what was actually authorized and scheduled, and in some cases a care plan review to determine whether the service parameters need to be updated through the authorization process.

Wrong Caregiver

The EVV record shows a caregiver providing a service to a client they are not assigned to, or the caregiver's credentials in the EVV system do not match the credentials on the claim. This can result from a coverage situation where a substitute caregiver was not properly set up in the EVV system before the visit. Resolution requires verifying who actually provided the service and ensuring the correct caregiver's credentials are associated with the visit record before billing.

Duplicate Visit Record

The EVV system shows two visit records for the same client, caregiver, and date — typically from a caregiver clocking in twice (once at the wrong time, then again at the correct time) or a system sync error. Resolution requires identifying which record is accurate, voiding the duplicate, and ensuring only one visit record flows through to billing for that service date.

The critical operational rule: EVV exceptions must be reviewed and resolved before claims are built for that billing cycle — not after. An agency that builds claims first and then discovers EVV exceptions has submitted unclean claims that will deny. An agency that clears its exception queue first and then builds claims submits a much cleaner batch. The discipline of reviewing exceptions before every claim run is worth more than any individual exception being resolved quickly.

About CareBravo

EVV Compliance as a Managed Function, Not a Daily Firefight

For most agencies, EVV exception management is a daily interrupt. The exception queue populates overnight. Someone checks it in the morning. Some exceptions get resolved immediately. Others go into a pile because resolving them requires calling the caregiver, getting documentation, and correcting the record — and there are seventeen other things that also need doing. By the end of the week, the billing run has exceptions that didn't get cleared, and some of those claims are going to deny.

CareBravo's EVV compliance function monitors the exception queue continuously, flags exceptions by type and age, and routes resolution tasks to the appropriate person with the specific documentation needed. Exceptions are resolved before the billing run. Claims go out clean. The denial rate for EVV-related issues — which at most agencies runs 5–8% of submitted claims — drops to near zero when the exception queue is systematically managed.

That's what EVV compliance looks like as a function rather than a firefight. 100+ agencies. 73% average revenue growth. No added back-office hires. Operational infrastructure that handles the administrative layer is how those results happen.

CareBravo EVV compliance function → Medicaid billing guide → Why claims get denied →
Questions

Common Questions About EVV for Home Care Agencies

EVV stands for Electronic Visit Verification — a federally mandated technology requirement for all personal care and home health services billed to Medicaid. EVV systems capture six data elements in real time for every visit: the type of service performed, the client receiving the service, the caregiver providing it, the date, the location, and the start and end time. Without compliant EVV data, the claim for that visit will be denied. The federal EVV mandate was established under the 21st Century Cures Act and applies to all states that receive federal Medicaid funding — which is all of them.

The six data elements EVV must capture for every Medicaid home care visit are: (1) the type of service performed, (2) the individual receiving the service, (3) the individual providing the service, (4) the date of service, (5) the location where the service was provided, and (6) the time the service began and ended. All six must be present and compliant. A missing or incorrect element — including a GPS location that doesn't match the client's authorized service address — creates an EVV exception that must be resolved before the visit can be billed.

States implement EVV through one of three models. In the open model, the state sets technical requirements and allows providers to choose any compliant EVV system — the agency purchases and operates its own software. In the state-managed (closed) model, the state provides a free EVV system to all providers through a single vendor contract — agencies use the state's system, not their own. In the hybrid model, the state provides a free system as the default but allows providers to use an approved alternative system if it meets the state's technical specifications and can transmit data to the state's aggregator. Many managed care states use the hybrid model. Contact your state Medicaid office and each MCO you contract with to confirm which model and which systems apply to your agency.

An EVV exception occurs when a visit record is flagged because one of the six required data elements is missing, inconsistent, or outside expected parameters. Common exceptions include missed clock-ins, missed clock-outs, location mismatches (GPS placing the visit at the wrong address), visits outside authorized hours, and duplicate visit records. Each exception must be resolved manually in the EVV system before the claim for that visit can be submitted. Resolution involves reviewing the visit record, gathering documentation from the caregiver, and correcting the record according to your state's EVV exception resolution protocols. Unresolved exceptions are unbillable visits — the most common preventable cause of EVV-related claim denials.

EVV applies to both. Federal law requires EVV for Medicaid-funded personal care services as of January 1, 2020, and for home health services as of January 1, 2023. Personal care services — help with bathing, dressing, meals, and daily activities — were the first category to require EVV. Home health services — skilled nursing, physical therapy, occupational therapy delivered in the home — are now also required. Agencies providing both service types must have compliant EVV data for all visit types. Agencies providing only personal care are still required to use EVV for every visit, regardless of visit duration.

A missed clock-in creates an EVV exception — a flagged visit record indicating that a required data element is missing. The exception must be resolved before the claim for that visit can be submitted. Resolution typically requires the caregiver to document the actual visit start time with a written explanation, a supervisor to review and attest to the record, and a correction to be entered in the EVV system according to your state's approved exception resolution process. Some states allow same-day corrections; others require additional documentation. The claim cannot be submitted until the exception is resolved. If the exception is not resolved before the timely filing deadline for that claim, the visit revenue is permanently lost.

See What EVV Compliance Looks Like When It's a Managed Function

CareBravo monitors the EVV exception queue continuously, routes resolution tasks before the billing run, and connects EVV data directly to scheduling and claims — so the data flowing into your claims is clean before they're submitted. A demo shows you what that looks like at your agency's scale.

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CareBravo EVV compliance function → Medicaid billing guide → Why claims get denied → How to start a Medicaid home care agency →