Trillium Tailored Plan Billing: The October 2026 Claims Change
If you bill the Trillium Tailored Plan, your claims workflow changed on October 1, 2026. Trillium moved to a unified claims system, so physical health, behavioral health, and long-term services claims for Tailored Plan members now go to Trillium directly, through a new portal and a new payer ID.
Short answer
Effective October 1, 2026, all Trillium Tailored Plan claims, except non-emergency medical transportation, vision, and point-of-sale pharmacy, are submitted directly to Trillium. Options are the iTransact portal at provider.trilliumitransact.com, electronic claims through a clearinghouse with payer ID 43072, or secure file transfer. Providers also move to iTransact for member authorizations and treatment plans. Provider Support is at 1-855-250-1539.
Where Trillium fits
Trillium Health Resources is one of North Carolina's Behavioral Health and I/DD Tailored Plans, which launched July 1, 2024 for members with significant behavioral health, substance use, I/DD, or TBI needs, and which manage the enhanced behavioral health services Standard Plans do not. Tailored Plans serve defined counties, so confirm both the member's plan and your contract with it.
What changed on October 1, 2026
Trillium transitioned to a unified claims system for its Tailored Plan. All claims for Tailored Plan members, across physical health, behavioral health, and long-term services and supports, now go directly to Trillium, except non-emergency medical transportation, vision, and point-of-sale pharmacy claims.
| Submission method | Detail |
|---|---|
| iTransact portal | provider.trilliumitransact.com, which also holds member authorizations and treatment plans |
| EDI through a clearinghouse | Payer ID 43072 |
| Secure file transfer | For high-volume submitters |
Effective October 1, 2026.
Prior authorization
Trillium publishes a Behavioral Health Prior Authorization Look-up Tool on its prior authorization services page. Authorizations and treatment plans for Tailored Plan members move to the iTransact portal with the claims change.
| Contact | Detail |
|---|---|
| Provider Support Service Line | 1-855-250-1539, Monday to Saturday, 7 a.m. to 6 p.m. |
As of October 2026.
Where behavioral health claims go wrong
- Old payer ID or old portal. Claims sent through the pre-October 2026 route after the change.
- Excluded claim types sent to Trillium. Transportation, vision, or point-of-sale pharmacy claims that still go elsewhere.
- Authorization not found in iTransact. Staff looking in the old system for authorizations that moved.
Related: verifying NC Medicaid eligibility in NCTracks, associate-level clinician billing in NC, and the NC Medicaid behavioral health billing guide.
Sources, checked October 2026: Trillium unified claims platform presentation; Trillium Tailored Plan quick reference guide. Confirm current details on the plan's provider site.
Frequently asked questions
What changed for Trillium Tailored Plan claims on October 1, 2026?
Trillium moved to a unified claims system. All Tailored Plan claims except non-emergency medical transportation, vision, and point-of-sale pharmacy now go directly to Trillium.
What is Trillium's payer ID?
For Tailored Plan claims submitted electronically after October 1, 2026, payer ID 43072.
What is the Trillium iTransact portal?
Trillium's provider portal at provider.trilliumitransact.com for submitting claims and accessing member authorizations and treatment plans.
What is Trillium's provider support number?
1-855-250-1539, Monday to Saturday, 7 a.m. to 6 p.m., as of October 2026.
New payer ID, new portal, no missed claims.
See Stable route Trillium claims through the new unified platform and check authorizations in iTransact before submission.
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