TRICARE Index.Htm: Navigating Regional Portals in 2026

*Note: TRICARE.com is an independent reference site and is not the official TRICARE program. For official policy and the official government portal, visit TRICARE.mil.*

## Quick answer In the context of TRICARE's digital infrastructure, "index.htm" (or index.html) is the standard technical filename for the homepage of various TRICARE portals, such as those managed by Humana Military (East) or TriWest (West). While beneficiaries rarely need to type this into a browser, it often appears in the address bar when navigating to secure member portals to check eligibility, view claims, or change primary care managers.

## In detail The "index.htm" file serves as the landing page for the complex ecosystem of TRICARE websites. Because TRICARE is managed by different regional contractors and federal agencies, the URL structure often reveals which system a beneficiary is currently using.

### Key TRICARE Portals and Landing Pages As of 2026, the TRICARE digital landscape is divided into several primary hubs:

* **TRICARE.mil:** The official government information site managed by the Defense Health Agency (DHA). * **Humana Military (TRICARE East):** Serving beneficiaries in the East Region. The "index.htm" or "index.html" page here typically leads to the beneficiary self-service portal for authorizations and referrals. * **TriWest Healthcare Alliance (TRICARE West):** Under the T-5 contract (effective January 2025), TriWest serves the West Region. Their portal is the primary touchpoint for West Coast beneficiaries to manage their 2026 coverage. * **milConnect:** Managed by the DMDC (Defense Manpower Data Center), this is where beneficiaries update DEERS information. * **Express Scripts:** The portal for pharmacy benefits and home delivery.

### Security and Navigation When accessing these pages, beneficiaries should ensure they are on a secure site (.mil or encrypted .com). In 2026, most TRICARE portals have transitioned away from older "index.htm" naming conventions toward more dynamic URLs for better security. If you see a URL ending in `index.htm` on a non-official site, be cautious of phishing attempts.

## Who this applies to * **Active Duty Service Members (ADSMs):** Who must use these portals (often hitting the `index.htm` landing page) to verify TRICARE Prime enrollment. * **Retirees and Families:** Who use these pages to pay monthly premiums (e.g., $391.92/year for TRICARE Select Group A retirees in 2026) or check the status of a catastrophic cap. * **Providers:** Who login to these specific portal indices to check patient eligibility and submit 2026 reimbursement claims.

Common scenarios

### Scenario 1: Re-enrolling in TRICARE Select John, a retired veteran in the West Region, navigates to the TriWest portal. The URL defaults to `triwest.com/index.htm` (or similar). Here, he confirms his 2026 enrollment and sets up his monthly allotment. Failure to find the correct landing page could result in a lapse in coverage.

### Scenario 2: Checking a Referral in the East Sarah, a TRICARE Prime spouse in Virginia, visits the Humana Military "index.htm" page to access her secure portal. She sees that her 2026 referral for a specialist has been approved, meaning her copay will be $0 rather than the point-of-service fee.

## Related terms * **DEERS:** The Defense Enrollment Eligibility Reporting System; the master database for TRICARE eligibility. * **T-5 Contract:** The fifth generation of TRICARE managed care support contracts that began full implementation in 2025. * **Catastrophic Cap:** The maximum out-of-pocket amount a family pays for TRICARE-covered services in a calendar year. * **PCM:** Primary Care Manager; the provider who coordinates care for Prime beneficiaries. * **Beneficiary Web Enrollment (BWE):** The online system used to join or change TRICARE plans.

## Sources * TRICARE Official Site: [TRICARE.mil](https://www.tricare.mil) * Humana Military (East Contractor): [HumanaMilitary.com](https://www.humanamilitary.com) * TriWest Healthcare Alliance (West Contractor): [TriWest.com](https://www.triwest.com) * Defense Manpower Data Center (milConnect): [milconnect.dmdc.osd.mil](https://milconnect.dmdc.osd.mil)