EVV in New Hampshire: Aggregator, Approved Vendors, Reason Codes and Deadlines (2026)
New Hampshire Medicaid EVV explained for home care agencies: the AuthentiCare (Fiserv) state system and aggregator, open model, third-party attestation, which services need EVV, rounding, reason codes and how to fix a denied claim.
Short answer. New Hampshire uses AuthentiCare, from Fiserv, as its free state EVV system and aggregator. Agencies can use their own EVV system instead if it sends visit data to AuthentiCare and the agency completes the state’s third-party attestation. EVV went live in 2024 for personal care and home health services. Check a visit before billing with the EVV visit checker.
At a glance
| Topic | Details |
|---|---|
| Aggregator | AuthentiCare (Fiserv) |
| Model | Open: the free state system, or a third-party system that sends visits to AuthentiCare |
| State system | AuthentiCare, with a mobile app and phone (IVR) check-in, free to providers |
| Alternate vendors | Allowed after the NH EVV Third-Party Attestation and an interface with AuthentiCare |
| Services that require EVV | Personal care and home health care services under the state plan and four HCBS waivers |
| Key dates | EVV go-live June 1, 2024, per DHHS |
| Who to call | NH DHHS EVV, EVV@dhhs.nh.gov; AuthentiCare support |
Which vendors are approved in New Hampshire?
New Hampshire doesn’t limit agencies to a vendor list. A third-party system can be used once the agency completes the NH EVV Third-Party Attestation and the interface to AuthentiCare is set up. DHHS warned that switching away from AuthentiCare before that is done can delay payment.
Open or closed model, and what it means for you
Open: caregivers clock in and out in AuthentiCare or a third-party system, every visit goes through the AuthentiCare aggregator, and the claim is matched against it. If AuthentiCare never receives an accepted visit, the claim denies.
The six elements every visit must carry
Type of service, individual receiving the service, individual providing the service, date, location, and start and end time. Missing any one is a rejected visit. The usual failures: a missing clock-out, a caregiver not linked to the agency on that date, and a check-in away from the home with no reason recorded.
Rounding and units
New Hampshire rounds each visit to the nearest 15 minutes: up to 7 extra minutes round down, and 8 or more count as another unit (NH DHHS EVV FAQs). Round per visit, not per week. Convert minutes with the units calculator.
Reason codes
New Hampshire’s exact reason codes and their wording are set in AuthentiCare. These are the kinds of reasons it asks for:
| Reason | When to use it |
|---|---|
| Missed clock-in or clock-out | The caregiver forgot to check in or out; the visit is entered manually |
| Device or app problem | Phone, app or battery failed during the visit |
| No signal at the home | Location could not be captured |
| Member refused or unavailable | The member would not use the phone or device |
| Service in the community | The visit took place away from the home |
| System outage | A confirmed outage of the state or vendor EVV system |
Use the most specific reason. Payers audit free-text “Other” and repeated manual entries by the same caregiver.
Grace window
We did not find a set grace period for late clock-ins in New Hampshire’s EVV guidance. Small differences from the schedule usually pass; the EVV visit checker flags visits more than 15 minutes off schedule so you can add a reason first. Your health plan contract may set a tighter threshold.
Deadlines and the correction window
DHHS lists June 1, 2024 as the EVV go-live date. Correct the visit in AuthentiCare or your third-party system so it passes the aggregator’s checks, then resubmit the claim to NH Medicaid or the managed care plan. Check the payer’s timely filing limit.
If a claim denies for EVV
- Find the visit in your EVV system and read the rejection reason.
- Fix the element (member ID, service code, times, location) and attach the reason code.
- Confirm the aggregator shows the visit as accepted or verified.
- Resubmit the claim. Do not resubmit before step 3; it denies again.
How Caregiver Scheduling handles New Hampshire EVV
Caregiver Scheduling captures the six elements with geofenced GPS check-in, logs an override reason when GPS can’t confirm the location, and flags late and missed check-ins for the office. In New Hampshire, a third-party system needs the state attestation and an AuthentiCare interface before it counts for Medicaid, so ask us how that works for your agency. GPS check-in and EVV.
Sources
Last reviewed November 6, 2026. General information, not legal or billing advice; confirm current rules with New Hampshire’s Medicaid agency.