San Antonio Medical Billing: TRICARE, BAMC and Civilian Payers

Timely Filing in San Antonio

Major Payers

Which Hospitals and Payers Shape Billing in San Antonio?

Seven kinds of owner sit in the San Antonio hospital list, and each one points to a different billing conversation. CMS Care Compare, in the Hospital General Information file last modified July 22, 2026, lists San Antonio hospitals as hospital district, state, church-affiliated nonprofit, proprietary, physician-owned and Veterans Health Administration. Brooke Army Medical Center runs on the military side and does not appear in that file.

The table below uses the ownership label CMS prints for each hospital. It tells you who owns the facility, not how that facility contracts with any payer, so treat the last column as a question to ask, not a finding.

These hospital names and labels come from the CMS file and each system's own site, not from our own contracts. For the payer side, start with the TRICARE billing guide, the Medicare guide and the Blue Cross Blue Shield of Texas guide, then compare each hospital's contracts against what the table asks.

How Does the Bexar County Hospital District Change the Picture?

University Health is the Bexar County Hospital District, and it owns a health plan. The system says it is officially the Bexar County Hospital District, a separate governmental entity and political subdivision of the State of Texas, governed by a seven-member Board of Managers appointed by the Bexar County Commissioners Court.

Two features matter on a claim. First, University Health states that the physicians of UT Health San Antonio serve as the medical staff for University Hospital and the Women's and Children's Hospital. A patient stay can therefore produce a facility claim and one or more physician claims from a different group, and a reconciliation that matches only one side will look short.

Second, University Health states that Community First Health Plans is the only local nonprofit health plan serving Bexar County and surrounding communities. Community First's own site says University Health established it in 1995 to cover Bexar County and seven surrounding counties. Its product list includes Medicaid STAR, STAR Kids and STAR+PLUS, CHIP and CHIP Perinate, Medicare Advantage, a Marketplace plan and a commercial HMO.

For a hospital that bills the district's plan, a patient can look like a county patient and a Medicaid managed care member at the same time. Run eligibility verification against the plan on the card, and keep the 95-day Texas Medicaid managed care limit on the Texas page in view.

What Does Brooke Army Medical Center's Trauma Program Mean for Claims?

Brooke Army Medical Center (BAMC) treats military and civilian trauma patients, and that mix is the billing issue. On its own news page dated December 17, 2025, BAMC says its Level I Trauma Center is the only Level I Trauma Center in the Department of War and that it cares for more than 6,000 military and civilian trauma patients each year, including 750 burn patients, from 22 counties in Southwest Texas.

University Health also describes University Hospital as the region's only Level I trauma center for both adults and children. We quote both claims as each organization words them. A San Antonio trauma patient may therefore be admitted to a military facility or to the county hospital, and the payer that owes the bill differs: the Defense Health Agency system for a TRICARE beneficiary, or an insurer, Medicaid or the district for a civilian.

BAMC does not publish how it bills civilian trauma. If you are a civilian hospital that transfers a patient to BAMC or receives one back, ask the receiving facility's patient business office which entity bills the encounter and for which dates of service before you code your own part of the stay.

How Does TRICARE Filing Work for a San Antonio Facility?

A San Antonio facility files TRICARE claims with the regional contractor within one year of service. The TRICARE claims page says that in the U.S. and U.S. territories claims must be filed within one year of service, and that in other overseas areas the limit is three years. The Texas Medicaid limit is 95 days, so a mixed payer mix needs two clocks.

TRICARE has an East and a West region, and the contractors differ. The TRICARE claims page lists Humana Military for the East Region and TriWest Healthcare Alliance for the West Region, with a ZIP code lookup to tell you which region a patient is in. Check the beneficiary's ZIP code on that lookup before choosing a claims address.

Retirees add a third payer. TRICARE For Life works alongside Medicare: Medicare pays first and sends the claim to the TRICARE For Life claims processor, and TRICARE then pays the provider directly for TRICARE-covered services. In Texas the Medicare side goes to Novitas, as the Texas page explains. The full TRICARE deadline detail, appeals and denial handling are in the TRICARE billing guide.

Which Filing Clocks Apply to a San Antonio Payer Mix?

Four clocks apply. The table lists each one with where it comes from. Commercial plans are left to the provider contract, so those need a contract check rather than a rule lookup.

The Texas page has the Medicaid and Medicare detail and the prompt pay rules, so they are not repeated here. Texas Medicaid itself is covered in the Medicaid guide. For other metros, see Houston, Dallas and Austin.

Which Dispute Pathway Applies to Out-of-Network Claims in San Antonio?

The pathway depends on the plan type, not the city. Texas mediation and arbitration cover fully insured plans; federal IDR covers plans the Texas law does not reach, including self-funded employer plans. The Texas page lays out the Chapter 1467 mediation and arbitration rules, and the state surprise billing laws page shows how the state and federal systems fit together.

TRICARE is a different case. TRICARE publishes no No Surprises Act dispute route for its claims. Treat a TRICARE underpayment as a TRICARE appeal first.

How We Handle Billing for San Antonio Groups and Facilities

We serve San Antonio facilities and groups remotely. Our only US office is the registered office in Richmond, KY; our team works from Vancouver, BC, Dubai, UAE and Islamabad, PAK, and we have no office or staff in San Antonio.

For hospitals we prepare institutional UB-04 claims with checks on bill type, revenue codes, patient status, condition and occurrence codes, authorization requirements and payer-specific rules, then submit, reconcile payments and manage denials for inpatient, outpatient and emergency care. Claims go out within 24 hours of charge entry and denials are worked within 48 hours. See hospital and facility billing.

Eligibility checks are automated, which matters when one patient may sit under TRICARE, Medicare and a local plan. If you want your San Antonio payer mix reviewed, book a call.