EVV in Maryland: Aggregator, Approved Vendors, Reason Codes and Deadlines (2026)
Maryland Medicaid EVV explained for home care agencies: the closed LTSSMaryland EVV system (ISAS), the mobile app requirement, which programs need EVV, reason codes and how to fix a visit before billing.
Short answer. Maryland runs a closed EVV model: personal assistance providers record visits in the state’s LTSSMaryland EVV system, the In-Home Supports Assurance System (ISAS). Maryland Medicaid has required providers to use the LTSSMaryland EVV mobile app since 2024, with the older call-in system as a backup. Check a visit before billing with the EVV visit checker.
At a glance
| Topic | Details |
|---|---|
| Aggregator | None separate: visits are recorded directly in LTSSMaryland (ISAS) |
| Model | Closed: the state system must be used for Medicaid visits |
| State system | LTSSMaryland EVV mobile app (ISAS), with the legacy call-in system as backup |
| Alternate vendors | Not accepted for EVV; agencies can still use their own software for scheduling |
| Services that require EVV | Personal assistance services in Maryland’s LTSS programs, such as Community First Choice and Community Personal Assistance Services; check MDH guidance for other services |
| Key dates | Mobile app required for all providers from 2024 |
| Who to call | Maryland Department of Health, (410) 767-6500 or 1-877-463-3464; LTSSMaryland EVV training page |
Which vendors are approved in Maryland?
None for EVV. Maryland’s personal assistance programs use the state system, so caregivers clock in and out with the LTSSMaryland EVV app. Agencies can keep their own software for scheduling, routing and notes, but the Medicaid visit record lives in LTSSMaryland. MDH runs regular EVV mobile app training for agency administrators.
Open or closed model, and what it means for you
Closed: caregivers clock in and out in the state’s app, and the state system holds the visit record that billing relies on. A visit recorded only in your own software doesn’t count for Medicaid.
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
Personal care is usually billed in 15-minute units. Maryland’s fee schedule and provider manual set the unit and the rounding rule for each service code, so check them for the codes you bill. Convert minutes with the units calculator.
Reason codes
Maryland’s exact reason codes and their wording are set in LTSSMaryland. 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 Maryland’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
Maryland Medicaid required all providers to use the EVV mobile app in 2024. Fix missed or wrong clock-ins in LTSSMaryland before you bill, since billing relies on the visit record there.
If a claim denies for EVV
- Find the visit in LTSSMaryland and see what is missing or wrong.
- Fix it there with the right reason (missed clock-in, wrong participant or service).
- Confirm the visit shows as complete in LTSSMaryland.
- Bill or rebill only after step 3.
How Caregiver Scheduling handles Maryland 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 Maryland, Medicaid personal assistance visits must still be recorded in the LTSSMaryland EVV app, so agencies there use Caregiver Scheduling for scheduling, routes and notes alongside the state app. GPS check-in and EVV.
Sources
Last reviewed November 6, 2026. General information, not legal or billing advice; confirm current rules with Maryland’s Medicaid agency.