WHO and TRICARE: Global Health Standards Explained

*TRICARE.Com is an independent reference site and is not the official TRICARE program or affiliated with the Department of Defense. For official policy, visit TRICARE.mil.*

## Quick answer The World Health Organization (WHO) is a United Nations agency that coordinates international public health efforts, but it does **not** provide healthcare services, insurance, or TRICARE coverage. While TRICARE may follow WHO-defined diagnostic codes (ICD-10/11) or global health emergencies, your actual benefits, doctor networks, and costs are determined solely by the Defense Health Agency (DHA) and regional contractors like Humana Military and TriWest.

## In detail The relationship between the World Health Organization and TRICARE is high-level and administrative. You will never receive a bill from the WHO, nor can you use it to file a claim. However, its influence impacts TRICARE beneficiaries in three specific ways:

### 1. Medical Coding and Diagnosis (ICD) The WHO maintains the International Classification of Diseases (ICD). TRICARE uses these codes to determine if a procedure is "medically necessary." * **Implementation:** As of 2026, TRICARE systems utilize ICD-10 and are transitioning toward ICD-11 standards as directed by the WHO. * **Impact:** If a WHO code for a specific condition changes, it may eventually change how a doctor submits a claim to Humana Military (East) or TriWest (West).

### 2. Public Health Emergencies When the WHO declares a Public Health Emergency of International Concern (PHEIC), the Department of Defense (DoD) often issues specific TRICARE policy waivers. * **Vaccines:** TRICARE typically covers vaccines recommended by the CDC, which often aligns with WHO global health guidelines. * **Televisits:** During global health crises (like the COVID-19 pandemic), TRICARE often waives copays for telehealth, triggered by regional and global data monitored by the WHO.

### 3. TRICARE Overseas and International Standards For beneficiaries living abroad, the WHO’s influence is more visible because they set the "gold standard" for healthcare quality in foreign countries. * **International SOS:** The overseas contractor utilizes global health data, often sourced from the WHO, to assess the safety and quality of host-nation providers. * **Coverage Limitations:** TRICARE will not cover "experimental" treatments. If the WHO has not recognized a treatment as standard care, TRICARE is unlikely to pay for it, even if a foreign doctor recommends it.

## Who this applies to * **Active Duty Families & Retirees:** Impacted indirectly through medical coding (ICD) used for billing. * **TRICARE Overseas Beneficiaries:** Most affected by WHO global health alerts and host-nation medical standards. * **Researchers/Providers:** Those who must ensure their clinical documentation aligns with WHO-established diagnostic criteria to ensure TRICARE reimbursement.

Common scenarios

### Scenario 1: A New Global Virus A new virus emerges in Europe. The WHO declares a global emergency. In response, the Defense Health Agency (DHA) may authorize **International SOS** to provide 100% coverage for testing and vaccinations for beneficiaries stationed in the affected region, following WHO-recommended protocols.

### Scenario 2: Seeking Treatment Abroad A retiree living in Thailand (TRICARE Select Overseas) wants a specific surgery. If the WHO considers this surgery "investigational" or "unproven," TRICARE will likely deny the claim, regardless of the local hospital's reputation. The beneficiary would be responsible for 100% of the cost.

### Scenario 3: Coding Errors A beneficiary in the US (TRICARE Prime) sees a claim denied by **TriWest**. The reason is an "invalid diagnosis code." This code is part of the WHO's ICD system. The doctor must update the code to the current WHO-compliant version for the 2026 plan year for TRICARE to pay the provider.

## Related terms * **ICD-11:** The 11th revision of the International Classification of Diseases, created by the WHO, used for billing. * **International SOS:** The contractor responsible for managing TRICARE benefits outside of the 50 United States. * **Medically Necessary:** The standard TRICARE uses to decide what to pay for; often informed by WHO clinical data. * **Defense Health Agency (DHA):** The U.S. entity that actually manages TRICARE, distinct from global bodies like the WHO.

## Sources * **TRICARE.mil:** Official site for coverage and plan details. [https://www.tricare.mil](https://www.tricare.mil) * **World Health Organization (WHO):** Official international health site. [https://www.who.int](https://www.who.int) * **Defense Health Agency:** For policy manuals and coding guidelines. [https://health.mil](https://health.mil)