Medical Billing Services in Texas: Rules, Payers, and What Practices Need to Know

By Nasar Haq | June 29, 2026 | 13 min read | Updated: June 29, 2026

Quick Summary: Texas has more Medicaid managed care plans, more surprise billing regulations, and more payer-specific filing rules than almost any other state. Here is what DFW and Houston practices need to get right.

Texas is the second-largest healthcare market in the United States, with over 72,000 active physicians, 600+ hospitals, and a patient population that spans every demographic and insurance category. For practice managers and physicians running medical practices in Texas, the billing environment is more complex than in any other state — and that complexity is not something a generic billing company can navigate without state-specific knowledge.

This guide covers everything Texas practices need to understand about billing in the Lone Star State: Medicaid managed care plan structures, TMHP claim submission requirements, timely filing deadlines by payer, the SB 1264 surprise billing law, Texas Medical Board billing regulations, and the specific payer landscapes in DFW, Houston, Austin, and San Antonio. If you are looking for a general overview of our services in the state, visit our Texas medical billing services page. This article goes deeper into the rules, regulations, and market dynamics that directly affect your revenue.

• 72,000+ Active Physicians in Texas - Second-largest physician workforce in the U.S.
• 5.8M Texas Medicaid Enrollees - Across STAR, STAR+PLUS, STAR Kids, and STAR Health
• 95 days Medicaid FFS Filing Deadline - Shortest major payer deadline in Texas
• $42B+ Annual Texas Healthcare Spending - Physician and clinical services (CMS estimate)

Why Texas Medical Billing Is Different

Every state has its own Medicaid rules, its own payer mix, and its own regulatory quirks. But Texas stands out for several reasons that directly affect how practices get paid. Understanding these differences is the starting point for any Texas practice that wants to maximize collections and minimize denials.

• Largest Medicaid managed care system in the country. Texas moved nearly all of its Medicaid population into managed care, with four distinct programs (STAR, STAR+PLUS, STAR Kids, STAR Health) operated by multiple MCOs across 13 service delivery areas. Each MCO has its own provider network, prior authorization requirements, and claim processing rules.
• SB 1264 surprise billing protections. Texas was one of the first states to pass comprehensive surprise billing legislation, and the law creates specific obligations for billing teams handling out-of-network claims at in-network facilities.
• No state income tax, but aggressive payer negotiations. Texas employers and payers negotiate aggressively on rates, and the large self-insured employer market in DFW and Houston creates a payer landscape where fee schedules and payment behavior vary significantly between plans.
• Geographic diversity in payer dominance. Blue Cross Blue Shield of Texas dominates in DFW, while the Houston market has stronger representation from United Healthcare and Cigna. Austin and San Antonio have different payer dynamics still. A billing company that treats all Texas markets the same is leaving money on the table.
• Texas Medical Board fee disclosure requirements. Texas has specific regulations around fee disclosure, billing transparency, and what constitutes impermissible billing practices — and violations can result in board complaints and disciplinary action.

The practices that consistently collect 96-98% of earned revenue in Texas are the ones with billing teams — whether in-house or outsourced — that understand these state-specific dynamics and build them into every workflow. Practices using a billing company that operates the same way in Texas as it does in Florida or California are losing revenue they do not even know they are missing.

Texas Medicaid Managed Care: STAR, STAR+PLUS, STAR Kids, and STAR Health

Texas Health and Human Services Commission (HHSC) administers Medicaid through four managed care programs, each serving a different population with different benefits, MCO assignments, and billing requirements. If your practice sees Medicaid patients — and most Texas practices do — you need to know which program each patient is enrolled in, which MCO manages their plan, and what that MCO requires for claims submission and prior authorization.

STAR (State of Texas Access Reform)

STAR is the primary Medicaid managed care program for low-income families, children, and pregnant women in Texas. It covers basic Medicaid benefits including physician visits, hospitalization, prescription drugs, and preventive care. STAR enrollees are assigned to one of several MCOs depending on their service delivery area. As of 2026, major STAR MCOs include Amerigroup, Blue Cross Blue Shield of Texas, Community Health Choice, Cook Children's Health Plan, Dell Children's Health Plan, Driscoll Health Plan, El Paso Health, Molina Healthcare, Superior HealthPlan, Texas Children's Health Plan, and UnitedHealthcare Community Plan.

STAR+PLUS

STAR+PLUS serves adults with disabilities and adults age 65 and older who receive both Medicaid and Medicare (dual eligibles). It integrates acute care and long-term services and supports (LTSS), including nursing facility services, community attendant services, and home health. Billing for STAR+PLUS is more complex than STAR because of Medicare-Medicaid coordination of benefits, LTSS authorization requirements, and the need to determine primary versus secondary payer status on every claim.

STAR Kids

STAR Kids provides managed care coverage for children and young adults under 21 with disabilities. It includes standard Medicaid benefits plus additional services like personal care services, private duty nursing, and Community First Choice (CFC). Billing teams must understand the unique prior authorization requirements for pediatric therapy services, durable medical equipment, and specialty referrals under STAR Kids.

STAR Health

STAR Health is the Medicaid managed care program exclusively for children and young adults in foster care. It is administered by a single MCO statewide — Superior HealthPlan. STAR Health billing requires careful handling of placement changes, retroactive eligibility adjustments, and coordination with the Texas Department of Family and Protective Services (DFPS).

The practical impact for billing teams is significant. You cannot simply enroll with Texas Medicaid and submit all claims the same way. Each MCO has its own provider portal, its own prior authorization list, its own claim submission preferences (EDI vs. portal), and its own appeals process. A practice in the DFW service delivery area might need to be enrolled with six or more MCOs just to cover the STAR program, and each one handles claims differently.

This is one of the primary reasons Texas practices with high Medicaid volumes benefit from working with a billing company that understands the Texas Medicaid landscape. The administrative burden of managing enrollment, prior authorization, and claims across multiple MCOs in multiple programs is substantial — and errors are expensive.

TMHP Claim Submission and Processing

TMHP (Texas Medicaid and Healthcare Partnership)

TMHP is the claims administrator for Texas Medicaid fee-for-service (FFS) claims and certain other state health programs. TMHP processes claims, manages provider enrollment, and maintains the Texas Medicaid Provider Procedures Manual. While most Texas Medicaid beneficiaries are in managed care (and claims go to their MCO), certain services — including those carved out of managed care — are still billed through TMHP as fee-for-service claims.

Even though the majority of Texas Medicaid is managed care, TMHP remains a critical part of the billing workflow for Texas practices. TMHP handles provider enrollment and re-enrollment for all Medicaid providers, processes fee-for-service claims for services carved out of managed care (including certain behavioral health services, school health services, and some dental services), and maintains the official Texas Medicaid fee schedules and procedure codes.

1. Provider enrollment. All Texas Medicaid providers must enroll through the TMHP portal. Enrollment requires a valid NPI, appropriate taxonomy code, a completed Texas Medicaid provider agreement, and site-specific information for each practice location. Re-enrollment is required every three years, and failure to re-enroll on time results in claims denials until the process is completed.
2. EDI submission. TMHP accepts electronic claims through designated clearinghouses using ANSI X12 837P (professional) and 837I (institutional) formats. Practices must register their EDI submitter ID through TMHP and ensure their clearinghouse is approved for Texas Medicaid submission.
3. Taxonomy codes. TMHP requires specific taxonomy codes that match the provider's enrollment type. Submitting a claim with a taxonomy code that does not match the provider's TMHP enrollment record results in an automatic denial.
4. Prior authorization for FFS services. Certain fee-for-service Medicaid services require prior authorization through TMHP. The prior authorization list is separate from the prior authorization requirements of each managed care MCO. Billing teams must track both TMHP FFS authorization requirements and MCO-specific authorization requirements depending on how the patient is covered.
5. Claim status and remittance. TMHP provides claim status through the online portal and through 835 electronic remittance advice. Practices should reconcile every TMHP remittance against submitted claims to catch processing errors and underpayments.

Texas Timely Filing Rules by Payer

Timely filing is the deadline by which a provider must submit a claim to a payer after the date of service. Miss the deadline, and the claim is permanently denied — no appeal, no exception, no recovery. Texas practices deal with a wider range of timely filing deadlines than practices in most other states because of the combination of Medicaid fee-for-service, multiple Medicaid MCOs, and a diverse commercial payer market.

The following table summarizes the timely filing limits for the major payers and programs in Texas. Note that some MCOs have filing deadlines that differ from the standard Texas Medicaid deadline, and that commercial payer deadlines vary by plan type. Always verify the specific filing deadline for each plan rather than relying on general payer-level rules.

For practices that also see workers' compensation patients, Texas has its own set of billing rules under the Texas Department of Insurance Division of Workers' Compensation (TDI-DWC). Workers' comp claims in Texas use a different fee schedule, different billing forms (CMS-1500 with specific field requirements), and different timely filing rules than commercial or Medicaid claims. Practices in markets with significant industrial or construction employment — particularly Houston, Midland-Odessa, and the Gulf Coast — need billing teams that understand Texas workers' compensation billing.

SB 1264: Texas Surprise Billing Law

SB 1264 (Texas Surprise Billing Law)

Senate Bill 1264, effective January 1, 2020, is Texas's comprehensive surprise billing law. It prohibits out-of-network providers from balance billing patients for emergency care and for non-emergency care received at an in-network facility when the patient did not have a meaningful choice of provider. The law establishes a mediation and arbitration process for payment disputes between out-of-network providers and insurers, removing the patient from the middle of the billing dispute.

SB 1264 was one of the strongest state-level surprise billing protections in the country when it passed, and it served as a model for the federal No Surprises Act that took effect in January 2022. For Texas practices, understanding how SB 1264 interacts with the federal law — and when each applies — is critical for billing compliance and revenue protection.

The Texas law applies to state-regulated health plans (fully insured plans regulated by the Texas Department of Insurance). The federal No Surprises Act applies to self-insured employer plans regulated under ERISA. In practice, this means Texas billing teams must determine which law governs each claim based on the patient's specific plan type — and the billing and dispute resolution procedures differ between the two.

1. Identify the plan type. Determine whether the patient's health plan is a state-regulated fully insured plan (SB 1264 applies) or a self-insured ERISA plan (federal No Surprises Act applies). This determines which dispute resolution process to use.
2. Send the bill to the insurer, not the patient. For covered surprise billing situations under either law, the provider bills the insurer directly. The patient's responsibility is limited to in-network cost-sharing amounts (copay, coinsurance, deductible).
3. Accept, negotiate, or dispute. If the insurer's payment is insufficient, the provider can negotiate directly or initiate the applicable dispute resolution process — mediation through TDI for SB 1264 claims, or independent dispute resolution (IDR) for federal No Surprises Act claims.
4. Document everything. Both laws require documentation of the circumstances (emergency vs. non-emergency, in-network facility, patient consent). Billing teams must capture this information at the time of service to support any future dispute.

The billing complexity created by SB 1264 is particularly acute for emergency medicine groups, anesthesiology practices, hospital-based radiologists, and pathology groups in Texas — all specialties where out-of-network encounters are common. These practices need billing teams that can identify SB 1264-eligible claims, route them correctly, track mediation deadlines, and manage the dispute resolution process. For more on state-specific billing laws across the country, see our resource center.

Texas Medical Board Billing Regulations

The Texas Medical Board (TMB) has specific regulations that govern how physicians bill patients and interact with insurers. While billing compliance is primarily a federal and payer-specific concern, the TMB adds a layer of state oversight that Texas practices must understand. Violations of TMB billing rules can result in complaints, investigations, and disciplinary actions including fines, license restrictions, and public reprimand.

• Fee disclosure. Texas law requires physicians to provide fee information to patients upon request. Practices must be prepared to disclose their fee schedules, and billing teams should be aware that patients have a legal right to this information.
• Billing for services not rendered. The TMB treats billing for services not provided as a serious violation that can result in license revocation. Billing teams must ensure that every submitted claim accurately reflects the services documented in the medical record.
• Unbundling. Submitting separate claims for services that should be billed as a single bundled code is a compliance violation under both TMB rules and federal regulations. Texas practices must use correct NCCI bundling edits and CCI modifier rules.
• Balance billing restrictions. Beyond SB 1264, the TMB has general rules about appropriate billing practices, including restrictions on egregious balance billing that could be considered unprofessional conduct.
• Medical records and billing documentation. The TMB requires that medical records support every billed service. Documentation must be contemporaneous, legible, and sufficient to justify the level of service billed. This standard applies to both E/M coding and procedure billing.

Texas practices should conduct annual billing compliance audits that specifically address TMB requirements in addition to federal compliance standards. For guidance on structuring a billing audit, see our medical billing services page, which includes compliance audit support.

DFW Market: Payer Mix, Specialties, and Billing Challenges

The Dallas-Fort Worth metroplex is the largest healthcare market in Texas and one of the largest in the country, with over 20,000 physicians and a patient population exceeding 8 million. The DFW payer landscape is dominated by large employer-sponsored plans — the region is home to more Fortune 500 company headquarters than any metro area except New York — which means a high proportion of commercially insured patients with self-funded employer plans.

For practices looking for a medical billing company in Dallas, understanding the DFW payer dynamics is essential. The dominant payers in DFW include Blue Cross Blue Shield of Texas (which has its headquarters in Richardson), UnitedHealthcare, Aetna, and Cigna. Medicare Advantage penetration is growing rapidly, particularly in the suburban markets of Plano, Frisco, McKinney, and Southlake.

• BCBS of Texas dominance. Blue Cross Blue Shield of Texas is the largest commercial payer in DFW by covered lives. Practices must maintain active BCBS network contracts and understand the distinction between BCBS of Texas plans and out-of-area Blue plans processed through the BlueCard program.
• Large self-funded employer plans. Major DFW employers like AT&T, ExxonMobil, American Airlines, and Texas Instruments self-fund their health plans. These plans are ERISA-regulated, not state-regulated, which affects surprise billing rules, appeals processes, and filing deadlines.
• Medicare Advantage growth. DFW has seen rapid growth in Medicare Advantage enrollment, particularly Humana, UnitedHealthcare, and Aetna Medicare Advantage plans. Practices must manage MA-specific prior authorization requirements and understand the difference between traditional Medicare and MA billing.
• Specialty concentration. DFW has heavy concentrations in orthopedics, cardiology, dermatology, and plastic surgery. The UT Southwestern and Baylor Scott & White systems anchor the academic and hospital-based market, while a large number of independent specialty practices operate throughout the suburbs.
• Rapid population growth. The DFW population is growing by approximately 150,000 people per year, creating a constantly shifting payer mix as new employers and new residents enter the market.

Houston Market: Payer Mix, Specialties, and Billing Challenges

Houston is the second-largest healthcare market in Texas and home to the Texas Medical Center — the largest medical complex in the world. The Houston payer landscape differs significantly from DFW, with a more diverse payer mix, higher Medicaid enrollment, and a larger uninsured population. Practices seeking a medical billing company in Houston need a partner that understands these dynamics.

Houston has a higher proportion of Medicaid patients than DFW, driven in part by a larger low-income population and higher uninsured rates. The energy industry presence creates a significant block of high-value commercial plans, but the market is more economically diverse than DFW, which affects the overall payer mix and collection dynamics.

• More diverse payer mix. While BCBS of Texas is still a major payer, Houston has stronger representation from UnitedHealthcare, Cigna, and Community Health Choice (a local managed care plan with significant Medicaid and marketplace presence).
• Higher Medicaid volume. Houston-area practices typically see a higher percentage of Medicaid patients than DFW practices. Harris County is the largest Medicaid market in Texas, which means billing teams must be highly proficient with Medicaid managed care rules and MCO-specific requirements.
• Texas Medical Center influence. The Texas Medical Center creates a referral and specialty care hub that affects billing patterns throughout the metro area. Practices near the Medical Center handle complex referral billing, multi-provider coordination, and facility-versus-professional fee splits.
• Energy industry commercial plans. Companies like ExxonMobil (headquartered in Houston until 2024), Shell, Chevron, ConocoPhillips, and Halliburton provide robust self-funded health plans. These plans often have higher reimbursement rates but also more aggressive utilization management.
• Hurricane and disaster-related billing. Houston practices must be prepared for disaster-related billing situations. After major hurricanes and flooding events, payers and Medicaid issue temporary billing modifications, extended filing deadlines, and special coverage provisions. Billing teams need to track and apply these temporary rules correctly.

Austin and San Antonio: Growing Markets, Unique Payer Dynamics

Austin and San Antonio are the third and fourth largest healthcare markets in Texas, and both are growing rapidly. While neither market is as large as DFW or Houston, each has distinct payer dynamics and billing challenges that Texas practices need to understand.

Austin

Austin is the fastest-growing major metro in Texas, with a booming tech industry that has attracted large employers like Apple, Google, Tesla, Samsung, and Oracle. This influx of tech employers has created a commercial payer landscape dominated by high-value self-funded plans with strong benefits but also sophisticated utilization management. Austin practices see a younger patient demographic on average, with higher demand for primary care, dermatology, mental health, and sports medicine.

• Tech employer self-funded plans are becoming the dominant commercial payer segment in Austin
• Dell Children's Health Plan and Seton (now Ascension) network plans have significant local market share
• Mental health and behavioral health billing volume is growing faster in Austin than in any other Texas metro
• University of Texas student and employee health plans create a distinct billing population
• Austin's uninsured rate is lower than Houston's but higher than DFW's, creating a moderate Medicaid volume

San Antonio

San Antonio has the largest military healthcare presence in Texas, with Joint Base San Antonio (JBSA) encompassing Fort Sam Houston, Lackland Air Force Base, and Randolph Air Force Base. TRICARE is a major payer in the San Antonio market, and practices must understand TRICARE billing requirements, referral rules, and the relationship between military treatment facilities and civilian providers.

• TRICARE is a top-five payer in San Antonio by covered lives — far more significant than in DFW or Houston
• Methodist Healthcare System and University Health are the dominant hospital systems affecting referral patterns
• San Antonio has a higher proportion of Medicare and Medicaid patients than Austin
• The border proximity creates a patient population with cross-border healthcare utilization patterns
• Superior HealthPlan and Driscoll Health Plan have strong Medicaid managed care presence in the San Antonio service delivery area

What to Look for in a Texas Medical Billing Company

Not every medical billing company that operates in Texas actually understands Texas billing. Many national billing companies use the same processes for Texas practices as they do for practices in Ohio or North Carolina, and Texas practices pay the price in missed revenue. When evaluating a billing partner for your Texas practice, look for these specific capabilities.

1. Texas Medicaid managed care expertise. Ask the billing company to explain the difference between STAR, STAR+PLUS, STAR Kids, and STAR Health. Ask which MCOs they are experienced with in your service delivery area. If they cannot speak specifically about Texas Medicaid programs, they will struggle with your Medicaid claims.
2. TMHP enrollment and re-enrollment management. The billing company should either handle provider enrollment through TMHP directly or have a dedicated credentialing team that manages the enrollment lifecycle including three-year renewals.
3. SB 1264 and No Surprises Act compliance. If your practice has any out-of-network exposure, the billing company must understand the SB 1264 mediation process for state-regulated plans and the federal IDR process for ERISA plans. Ask about their process for identifying which law applies to each claim.
4. Texas-specific timely filing tracking. The billing company should track timely filing deadlines at the plan level — not just the payer level. A BCBS of Texas fully insured plan and a BCBS-administered self-funded plan may have different filing deadlines, and the billing company must manage both correctly.
5. Market-specific payer knowledge. Ask the billing company about the payer landscape in your specific metro area. A company that handles DFW practices should know that BCBS of Texas dominates the commercial market. A company handling Houston practices should know about Community Health Choice. If they treat all Texas markets the same, they are not providing market-specific value.
6. Denial management with Texas-specific root cause analysis. Texas denial patterns differ from national averages. Medicaid MCO denials, SB 1264 payment disputes, and Texas workers' compensation denials all require different resolution strategies. The billing company should show you their denial categorization and resolution process for Texas-specific denial types.
7. Reporting that reflects Texas market benchmarks. Your billing company should benchmark your practice's performance against Texas-specific data — not national averages. Collection rates, denial rates, and AR aging benchmarks differ between Texas markets and national norms.

Medtransic provides medical billing services throughout Texas, with specific expertise in the DFW, Houston, Austin, and San Antonio markets. Our teams understand the Texas Medicaid managed care system, TMHP enrollment requirements, SB 1264 compliance, and the payer dynamics in each major metro area. We work with practices across all specialties and have deep experience with the high-Medicaid, high-commercial, and mixed-payer environments that characterize different Texas markets.

Sources

• Texas Health and Human Services Commission (HHSC) — Texas Medicaid and CHIP program information, managed care plan details, service delivery area maps, and MCO contract requirements
• Texas Medicaid and Healthcare Partnership (TMHP) — Provider enrollment, fee-for-service claim submission, Texas Medicaid Provider Procedures Manual, and fee schedules
• Texas Department of Insurance (TDI) — SB 1264 surprise billing law information, mediation process, complaint filing, and consumer protection resources
• Texas Medical Board (TMB) — Physician billing regulations, fee disclosure requirements, compliance standards, and disciplinary guidelines
• Centers for Medicare & Medicaid Services (CMS) — Medicare timely filing rules, Medicare Advantage plan requirements, and federal billing compliance standards applicable in Texas
• Texas Department of Insurance, Division of Workers' Compensation (TDI-DWC) — Texas workers' compensation billing rules, fee schedules, and claim filing requirements