TRICARE IOP and PHP certification: how a program becomes TRICARE-authorized

The short answer: to bill TRICARE for IOP or PHP, a program must (1) hold its state license, (2) be accredited by the Joint Commission, CARF or the Council on Accreditation (or another accreditor the Defense Health Agency approves), (3) sign TRICARE's participation agreement for its level of care, and (4) be certified through the regional contractor's institutional application. In Texas that contractor is TriWest Healthcare Alliance, which has run the TRICARE West region since January 1, 2025; Humana Military runs the East region. Joining the contractor's network is a separate, optional contract on top. Once you're in, every IOP or PHP admission needs a referral or pre-authorization and every continued stay needs pre-authorization, and TRICARE pays an all-inclusive per diem. Because accreditation comes first, plan on TRICARE revenue after your accreditation decision, not at opening.

1. Certification vs network: two different files

Your clinicians are a third file: each one who bills TRICARE for professional services is certified individually under their own license. Our TRICARE credentialing guide for Texas covers clinicians, the 2025 move of Texas to the West region and the network application, so this page stays on the program.

2. The rules behind it

3. PHP and IOP requirements side by side

The Texas license is the floor under all of this. A substance use IOP or PHP in Texas needs HHSC's chemical dependency treatment facility license; a mental-health-only program has its own questions (see licensing a mental health IOP or PHP in Texas). TriWest's provider-types page says TRICARE-authorized providers meet state licensing and certification requirements.

4. Getting certified, step by step

1. Get the state license and open. An accreditor surveys a program that is already serving clients and has charts, so the license and the first admissions come before everything below. How to start an IOP in Texas lays out the launch.
2. Choose an accreditor TRICARE accepts. The Joint Commission and CARF are the two most programs choose; Joint Commission vs CARF compares standards, fees and timing. Confirm the current accepted list with the contractor before you apply.
3. Get accredited. Gap assessment, policies, a mock survey, the survey and the follow-up evidence. Accreditation for new programs explains how many clients and how much history the accreditors want first, and accreditation cost and timeline has the numbers.
4. Confirm your region. Texas is TRICARE West (TriWest). A location in an East state applies to Humana Military. Opening near a Texas base? See our guides for Killeen–Temple, Abilene (Dyess AFB) and Wichita Falls (Sheppard AFB). Check each site's ZIP code on TRICARE's contractor page.
5. File the institutional application. TriWest's provider applications page lists an Institutional Intensive Outpatient Program Provider Application and a Freestanding Psychiatric and SUD Partial Hospitalization Program Provider Application. File the one for each level you run; a program with both files both.
6. Sign the participation agreement for each level of care, as TriWest's form directs (its July 2026 IOP agreement goes back signed to TriWest's provider contracting email or its Phoenix post office box). The agreement binds you to TRICARE's rules, including accepting the per diem as payment in full.
7. Ask for the network agreement. Certification alone lets TRICARE pay you as a non-network provider; for referrals, request TriWest's network contract and read the rate exhibit code by code before you sign. Negotiating insurance rates covers what to look for.
8. Get the effective date in writing and load it in your EHR and billing system. Don't admit a TRICARE member as in network, or bill IOP or PHP to TRICARE, before that date.

On the Texas program roadmaps we run, the TRICARE application is a step that waits for the accreditation decision, and we budget about 120 days from there. The contractor makes its own decisions on its own schedule, so treat that as a planning figure, not a promise.

5. The application packet

• State license for each site and level of care (for a Texas SUD program, the HHSC CDTF license), and any local certificate of occupancy.
• Accreditation award letter and the most recent survey report, with the accredited services listed. The levels of care on the letter should match the levels you're applying for.
• Organization Type 2 NPI with the right taxonomy, the W-9 and the IRS letter that matches it exactly (see NPI Type 1 vs Type 2).
• Ownership and control information, general and professional liability certificates.
• The medical director's or directing physician's license and TRICARE status (required for a PHP).
• A program description by level of care: hours per day and days per week, the services in a day, staffing, admission and discharge criteria, and how family therapy is offered.
• Your policies on treatment planning, discharge planning, emergencies and utilization review, which the accreditor has already seen.
• A roster of the clinicians, with each one's license and TRICARE certification status.

Our credentialing documents checklist has the organization folder we build once for every plan.

6. Referrals, authorizations and reviews

• Admission. TriWest's behavioral health referral checklist lists IOP and PHP admissions as needing a PCM referral or pre-authorization, and its prior authorization list includes IOP and PHP services. Verify the plan (Prime, Select and others) and the sponsor's status at every admission; our VOB checklist covers what to ask.
• Continued stay. Pre-authorization, on the contractor's schedule. Write each review against medical necessity in plain clinical terms; continued-stay documentation shows how, and our utilization review guide sets up the log.
• Late requests cost days. From May 15, 2026, for mental health admissions that needed prior authorization and didn't get it, TriWest authorizes only the days from when the provider notifies it (TriWest notice, as reposted). The notice is written about inpatient and residential admissions; treat IOP and PHP the same way and never start a program day ahead of the authorization.
• Other health insurance comes first. TRICARE pays after most other coverage. When another plan has paid, TriWest wants the TRICARE claim within 90 days of that plan's decision.
• Timely filing. One year from the date of service, and TriWest recommends filing within 30 days (TriWest claims guidelines). Compare it with your other payers in our timely filing limits guide.

The prior authorization guide on our VOB site covers tracking authorizations so none lapse mid-episode.

7. How TRICARE pays IOP and PHP

• Per diem, all-inclusive. The Reimbursement Manual pays PHPs, and IOPs for dates of service from October 3, 2016, on prospectively set, all-inclusive per diem rates, which the program accepts as payment in full for all PHP or IOP services.
• Half and full days for PHP. TRICARE billing guidance has used revenue code 0912 for a 3-to-5-hour PHP day and 0913 for 6 hours or more, billed on a UB-04 one line per date of service. No per diem is paid for a day with under 3 hours of services, a day the client didn't attend, or a leave day.
• Rates. The Defense Health Agency sets the per diems; your network agreement may set a different rate. Ask for the rate for each revenue and HCPCS code you bill before you sign.
• Medicare-eligible members. Many retirees over 65 have TRICARE For Life with Medicare primary, and freestanding programs generally can't bill Medicare for IOP or PHP. Read Medicare coverage of IOP and PHP and verify these members before admission.

Our sister site explains per diem billing for IOP and PHP and the IOP and PHP billing codes. Cima EHR for programs counts each client's documented hours per day from signed group entries and charges the per diem only for days that meet the level's hours, on a UB-04 with the revenue code you set, so a short PHP day is caught before the claim goes out.

8. Building a program for military families and veterans

TRICARE certification gets you paid. These are what make service members, veterans and their families choose you, and stay:

• Military culture training for every clinician. VA and DoD's free course, Military Culture: Core Competencies for Health Care Professionals, is about 8 hours in four modules with continuing education credit, taken through VHA TRAIN with your NPI in your profile (VA community provider training). Keep the certificates in each staff file.
• Trauma-focused therapy, done properly. The 2023 VA/DoD PTSD guideline recommends three manualized trauma-focused psychotherapies (cognitive processing therapy, prolonged exposure and EMDR) over medication when both are available, and says a substance use disorder alone shouldn't rule them out (VA/DoD clinical practice guideline). Offer them only through clinicians trained and supervised in them, and say which ones you offer.
• Ask about service at intake. Military history, deployments, military sexual trauma, head injuries, and whether the client is a service member, veteran, guard or reserve member or family member. The answer changes the payer, the referral rules and the treatment plan.
• Family is part of the work. Deployments, moves and separations hit spouses and children. A family program with evening options fits military households; see building an IOP family program.
• Women's services. Pregnant and postpartum spouses and women veterans need prenatal care coordination, child care and, for opioid use disorder, medication; see starting a women's or pregnant and postpartum program in Texas.
• Peer groups. A veterans' group or a service-member group, where you have enough clients, is something families look for.
• Relationships, not inducements. Get to know the behavioral health clinics at nearby military treatment facilities and the referral staff who send TRICARE members out, with fast assessments and clear communication. Paying anyone for referrals, or giving members anything of value to choose you, is off limits under the Texas Patient Solicitation Act and federal law; see patient brokering laws. Near Fort Hood, TRICARE is a large part of the market; our Killeen-Temple guide covers that market.

9. TRICARE isn't the VA

Veterans whose care the VA pays come through the VA Community Care Network, with a VA referral for each episode, VA Form 10-10172 for more visits, records back to the VA within 30 days and a 180-day claim limit. TriWest runs that network in Texas too, but it's a separate application and a separate agreement, and TRICARE certification doesn't carry over. Our VA Community Care Network guide covers it step by step. A program in a military town usually wants both.

10. Why certifications stall

• Applying before accreditation, or with an accreditation letter that doesn't list the level of care being applied for.
• Applying to the wrong contractor: Humana Military for a Texas site, or TriWest for an East-region site.
• Filing the network application but not the institutional application and participation agreement, or the reverse.
• A PHP without a TRICARE-authorized physician directing it.
• Names, NPIs and tax IDs that don't match exactly across the license, the W-9, the accreditation letter and the application.
• Treating TRICARE members before the effective date, then finding the days can't be billed.
• Letting accreditation lapse. A program that loses it no longer meets the participation agreement; keep the recurring work on a schedule with the compliance calendar.

11. What we do and what it costs

Cima Consulting carries a program through the whole path: the license, opening, a Joint Commission or CARF survey, then the TRICARE institutional application, participation agreements and network contract. Already accredited? We file the TRICARE facility contract as one plan. You sign every application and agreement yourself.

Or book a free 30-minute call.

Questions

Sources

• 32 CFR 199.2 and 199.6 (eCFR); Federal Register, TRICARE; Mental Health and Substance Use Disorder Treatment, 81 FR 61068 (September 2, 2016)
• Defense Health Agency, TRICARE Policy Manual chapter 11, section 2.5, PHP standards, section 2.7, IOP standards, the PHP participation agreement and the IOP participation agreement; chapter 7, IOP coverage; TRICARE Reimbursement Manual chapter 7, section 2
• TRICARE, Who are the East and West Region contractors?; Partial hospitalization; Mental health fact sheet
• TriWest: provider applications; IOP participation agreement; freestanding psychiatric and SUD PHP participation agreement; prior authorization list; behavioral health referral checklist; August 2026 Provider Pulse (IOP hours correction); claims guidelines; TRICARE provider types
• Southwestern Health, Changes to TRICARE West mental health authorization requirements (TriWest notice, May 2026); Health Net Federal Services, PHP billing tips (revenue codes 0912 and 0913)
• VA, community provider training; VA/DoD, clinical practice guideline for PTSD (2023), summarized in Annals of Internal Medicine

This guide is general information. Cima Consulting isn't a law firm or an accounting firm. The Defense Health Agency and its contractors make their own decisions; we don't guarantee approvals, rates or dates.