# Defense Health Agency > The Defense Health Agency (DHA) is a joint, integrated combat support agency of the U.S. > Department of Defense. It enables the Army, Navy, and Air Force medical services to > provide a medically ready force and a ready medical force, and it operates the Military > Health System (MHS) — including MHS GENESIS (the DoD electronic health record built on > Oracle Health/Cerner Millennium), the MHS Data Repository (MDR), the MHS Management > Analysis and Reporting Tool (M2), and the Joint Health Information Exchange. Generated by API Evangelist on 2026-09-07 from this repository's apis.yml and probed artifacts. This file is NOT published by the Defense Health Agency; https://www.health.mil/llms.txt returned 404 on 2026-09-07. ## What an agent should know first DHA publishes **no public developer API, no developer portal, and no machine-readable API contract**. There is no OpenAPI, AsyncAPI, GraphQL SDL, WSDL, .proto, MCP server or A2A agent card on any DHA host. Every named /.well-known/ discovery path on www.health.mil, www.dha.mil and www.tricare.mil returned 404 (see the well-known probe below). Do not attempt to construct a base URL or call an endpoint from this profile — none is published. What DHA does publish is a large body of **human-readable interface documentation**: 32 Interface Control Documents describing MHS Data Repository data feeds, plus MDR and M2 data dictionaries and user guides — all as .DOCX and .PDF files in the Health.mil Reference Center. Data access is by request, not by key: the DHA developer/service request path (DAD IO J-6) runs on info.health.mil, which requires a Common Access Card and is served under a DoD-internal PKI certificate that does not chain to any public root. ## Known API surface - [MHS GENESIS SMART on FHIR](https://www.health.mil/Military-Health-Topics/Technology/MHS-GENESIS): The DoD electronic health record exposes a SMART on FHIR interface for authorized clinical applications. Access is restricted to vetted DoD application partners. No service root URL, capability statement, scope list or SMART configuration document is published; MHS GENESIS is absent from Oracle Health's public patient-access FHIR endpoint directory. ## Documentation - [MHS GENESIS: The Electronic Health Record](https://www.health.mil/Military-Health-Topics/Technology/MHS-GENESIS): Program overview of the DoD EHR serving 9.5 million beneficiaries. - [Health.mil Technology](https://www.health.mil/Military-Health-Topics/Technology): Index of MHS technology programs — Joint HIE, MHS GENESIS, PEO DHMS, Solution Delivery Division. - [Joint Health Information Exchange](https://www.health.mil/Military-Health-Topics/Technology/Joint-HIE): DHA's health-data exchange participation — eHealth Exchange, CommonWell Health Alliance, Carequality. - [MDR, M2, ICDs Functional References and Specifications](https://health.mil/Military-Health-Topics/Technology/Support-Areas/MDR-M2-ICD-Functional-References-and-Specification-Documents): Data dictionaries, user guides and access forms for the MHS Data Repository and M2. - [Interface Control Documents](https://health.mil/Military-Health-Topics/Technology/Support-Areas/MDR-M2-ICD-Functional-References-and-Specification-Documents/Interface-Control-Documents-Functional-References-and-Specifications): 32 public .DOCX/.PDF interface specifications for MDR data feeds (SADR, SIDR, CAPER, TED, HCSR, PDTS, DEERS extracts and others). - [Open Source Technologies](https://health.mil/Military-Health-Topics/Technology/Support-Areas/Open-Source-Technologies): MHS open-source releases — OpenAHLTA, OpenHDD, SEMOSS. - [Reference Center](https://www.health.mil/Reference-Center): Policies, fact sheets, technical documents and publications library. ## Organization - [Health.mil](https://www.health.mil): Official Military Health System website. - [DHA.mil](https://www.dha.mil): Official Defense Health Agency website. - [About the Agency](https://www.dha.mil/About-DHA): Mission, leadership and structure. - [MHS Newsroom](https://www.health.mil/News): News and releases. - [TRICARE](https://www.tricare.mil): The DoD health plan operated by DHA. - [LinkedIn](https://www.linkedin.com/company/defense-health-agency) ## Standards claimed (documented, not contract-verified) - eHealth Exchange, CommonWell Health Alliance, Carequality — stated on the Joint HIE page. - SMART on FHIR / HL7 FHIR — stated in a DHA-published SBIR topic (https://www.sbir.gov/topics/11133). No FHIR release is named by DHA. ## Artifacts in this profile - conformance/defense-health-agency-conformance.yml — standards claims with evidence URLs. - well-known/defense-health-agency-well-known.yml — the /.well-known/ probe record (all misses). - security/defense-health-agency-domain-security.yml — TLS/HSTS/DNSSEC/CAA/SPF/DMARC probe. - plans/defense-health-agency-plans-pricing.yml — plan_count 0; DHA publishes no API plans. - rate-limits/defense-health-agency-rate-limits.yml — limit_count 0; DHA publishes no limits. - blogs/ — Medical Surveillance Monthly Report and MHS newsroom items. ## Support - DHA Global Service Center: 1-800-600-9332 / dhagsc@health.mil - [Global Service Center](https://gsc.health.mil/)