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TEXAS • SPECIALTY

Cardiology Billing Services in Texas

Specialized cardiology billing services for providers in Texas. We understand the unique coding, compliance, and payer challenges of your specialty.

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Quick Answer

How does Texas-specific billing affect a cardiology practice?

Texas cardiology practices bill against three layers: BCBSTX as the dominant commercial payer (with its own prior auth and fee schedule), TDI prompt-pay rules requiring HMOs to pay clean claims in 30 days and PPOs in 45 days under Texas Insurance Code Chapter 843, and Texas Medicaid's 95-day timely filing window for fee-for-service plus separate clocks for STAR, STAR+PLUS, and STAR Kids MCOs. Echo, cath, stress test, and ICD interrogation codes (93306, 93458, 93015, 93295) carry payer-specific edits in this environment.

  • BCBSTX is the dominant commercial payer for Texas cardiology
  • Texas Insurance Code Chapter 843: 30-day HMO / 45-day PPO clean-claim prompt pay
  • Texas Medicaid FFS timely filing window: 365 days from DOS (commercial 95-180 days)
  • STAR, STAR+PLUS, STAR Kids MCOs each set their own filing clocks
  • 18% annual interest penalty on TDI prompt-pay defaults

Cardiology revenue in Texas is shaped by three forces that don't move together: Blue Cross Blue Shield of Texas (BCBSTX) fee schedules and prior auth rules; the Texas Insurance Code Chapter 843 prompt-pay clock that runs 30 days for HMOs and 45 days for PPOs; and Texas Medicaid's tight 95-day timely filing window for fee-for-service, with each STAR/STAR+PLUS MCO setting its own clock on top. Cardiology practices in Houston's Texas Medical Center, Dallas-Fort Worth, San Antonio, and Austin work codes like 93458 (left heart cath), 93306 (echo), 93015 (stress test), and 93000 (ECG) inside that environment every day. We build the workflow around those rules.

Content reviewed by AAPC-certified medical billing specialists.

Payer Intelligence

Payer Landscape in Texas

Texas Medicaid (STAR, STAR+PLUS, STAR Kids) routes members through Superior HealthPlan, Molina Healthcare, UnitedHealthcare Community Plan and 2 more plans, each with its own authorization rules and fee schedule. On the commercial side, Blue Cross Blue Shield of Texas, Aetna, UnitedHealthcare drive the bulk of Texas claim volume, so we maintain payer-specific denial playbooks and appeal templates for each. Claim clocks in Texas run 365 days for Medicaid and 95-180 days for commercial payers — deadlines our A/R queues are built around. Texas's prompt-pay statute: Texas Insurance Code Chapter 843 requires HMOs to pay clean claims within 30 days and PPOs within 45 days. Penalties include 18% annual interest on late payments.

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Medicaid Program

Texas Medicaid (STAR, STAR+PLUS, STAR Kids)

Managed Care Organizations

Superior HealthPlanMolina HealthcareUnitedHealthcare Community PlanAmerigroupCommunity Health Choice
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Key Commercial Payers

Blue Cross Blue Shield of TexasAetnaUnitedHealthcareCignaHumana
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Timely Filing Deadlines

Medicaid365 days
Commercial Payers95-180 days
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Prompt Pay Law

Texas Insurance Code Chapter 843 requires HMOs to pay clean claims within 30 days and PPOs within 45 days. Penalties include 18% annual interest on late payments.

Texas Cardiology Billing Services: A Closer Look

Texas Medicaid (STAR/STAR+PLUS) and cardiology

Texas Medicaid runs through three managed care programs — STAR for low-income families and children, STAR+PLUS for adults with disabilities and seniors who need long-term services, and STAR Kids for children with disabilities. Each is administered through MCOs including Superior HealthPlan (Centene), Molina Healthcare, UnitedHealthcare Community Plan, Amerigroup, and Community Health Choice. Cardiology practices treating Medicaid-enrolled patients hit the STAR+PLUS population disproportionately because adult cardiac disease aligns with that program's eligibility. Each MCO has its own prior authorization rules for procedures like 93458 (left heart cath) and 92928 (PCI with stent), its own preferred imaging vendors, and its own appeals process. Texas Medicaid fee-for-service holds a 365-day timely filing window (commercial payers in Texas typically run 95-180 days, with each MCO setting its own clock). We build per-MCO workflows: Superior's portal for STAR+PLUS auth, Molina's separate prior auth fax line for cath lab procedures, UnitedHealthcare Community Plan's medical necessity documentation requirements for stress tests. The 18% annual prompt-pay penalty under Texas Insurance Code Chapter 843 doesn't apply to Medicaid, but state Medicaid timeliness rules do — and we track every clean claim against the relevant clock.

Blue Cross Blue Shield of Texas: the dominant commercial payer

BCBSTX (a division of Health Care Service Corporation) anchors the Texas commercial cardiology payer mix. Whether your practice is in Houston, Dallas, San Antonio, Austin, Fort Worth, or El Paso, BCBSTX contracts shape your revenue more than any other single payer. Cardiology-specific BCBSTX behaviors we manage every day: prior auth requirements on cardiac imaging including stress echo and nuclear stress, modifier rules for global cardiology codes versus professional component (-26) versus technical component (-TC), and place-of-service edits that differ between hospital outpatient (POS 22), ambulatory surgery center (POS 24), and office-based cath labs (POS 11). BCBSTX uses eviCore and AIM Specialty Health (now Carelon) for high-tech imaging prior auth, which means stress echo (93306+93351) and nuclear cardiology codes need approval before scheduling. We keep templates aligned with BCBSTX medical policy bulletins and run weekly reconciliation against their fee schedule updates.

Texas Insurance Code Chapter 843: the prompt-pay clock

Texas Insurance Code Chapter 843 establishes one of the cleanest prompt-pay frameworks in the country. HMOs must pay clean claims within 30 days; PPOs have 45 days. Failure triggers 18% annual interest on the unpaid balance, plus the right for providers to escalate to the Texas Department of Insurance (TDI). For cardiology practices, where individual claims for procedures like 93458 (left heart cath, ~$650 professional fee) or 92928 (PCI with stent, ~$900 professional fee plus higher facility component) are high-dollar, that 30-45 day clock translates into real cash flow. We track every clean claim against the date the payer received it, flag stalled payments at day 25 (HMO) and day 40 (PPO), and file TDI prompt-pay complaints when payers default. The 18% interest is enforceable, but it's the audit risk and TDI scrutiny that usually moves payers fastest.

Texas-specific cardiology CPT considerations

Cardiology in Texas runs on the same CPT code set as anywhere else, but Texas-specific edits matter. 93458 (left heart cath with ventriculography) is a high-prior-auth code for BCBSTX and Aetna Texas — both use eviCore for cardiac imaging review. 93306 (complete echo with Doppler) needs the medical necessity documentation that Texas Medicaid MCOs request, especially for follow-up echos within 12 months of a prior. 93015 (cardiovascular stress test, complete) is bundled with -26/-TC component splits in office-based versus hospital settings — getting the modifier right is the difference between full reimbursement and a denial. 93295 (remote ICD interrogation) is one of the codes BCBSTX has tightened documentation requirements on in 2024-2025. 92928 (PCI with stent placement) is reported with the affected vessel modifier (-LD, -RC, -LC, -LM) and pairs with appropriate ICD-10 codes for symptomatic CAD. Texas Medicaid covers cardiac rehab (93798) but each MCO sets its own session limits and prior auth threshold.

Surprise billing and the No Surprises Act in Texas

Texas SB 1264 (effective 2020) was one of the earliest state surprise-billing protections, predating the federal No Surprises Act (NSA). For cardiology practices, the interaction matters: out-of-network emergency cardiac care, inpatient consults at in-network facilities, and air ambulance for cardiac emergencies are all caught by the protection regime. Where SB 1264 and the NSA overlap, the federal IDR process generally controls for most plans. Where they diverge, the Texas mediation process applies to state-regulated plans (about 30% of the Texas commercial market — most large employers are ERISA self-funded and fall under the NSA). We bill out-of-network cardiac emergency claims at the qualifying payment amount or median in-network rate as appropriate, file IDR or Texas mediation requests when reimbursement is below the benchmark, and document the medical necessity narrative each process requires.

Texas geography and cardiology practice variation

Texas is enormous, and cardiology practice environments vary by region. Houston's Texas Medical Center hosts the world's largest concentration of cardiac care — Texas Heart Institute, Houston Methodist DeBakey, Memorial Hermann Heart & Vascular — and that density means competitive payer contracting and high-volume cath programs. Dallas-Fort Worth has Baylor Scott & White, Texas Health Resources, and Medical City driving payer dynamics. San Antonio is anchored by Methodist Healthcare, University Health, and Baptist. Austin's market is led by Ascension Seton, St. David's HealthCare, and Baylor Scott & White. West Texas (Lubbock, Amarillo, Midland-Odessa) and the Rio Grande Valley face severe provider shortages, higher uninsured rates, and a heavier Medicaid mix — billing in those markets means more emphasis on charity care, sliding fee schedules, and Medicaid MCO authorization workflows. Practice billing strategy adjusts to that geography.

Texas-Specific CPT Context

Real CPT codes operating in the Texas payer environment, with payer-specific notes.

93458 Left heart catheterization with ventriculography

BCBSTX and Aetna Texas use eviCore/Carelon for prior auth. Texas Medicaid MCOs require separate authorization. High-dollar code with strict documentation requirements.

93306 Complete transthoracic echocardiography with Doppler

Texas Medicaid MCOs require medical necessity documentation, especially for follow-up echos within 12 months. BCBSTX requires prior auth for stress echo combinations.

93015 Cardiovascular stress test with interpretation and report

Modifier discipline (-26 professional component vs -TC technical component) is critical in Texas office vs hospital settings. POS 11 vs POS 22 affects reimbursement.

93295 Remote interrogation of ICD device with analysis

BCBSTX tightened documentation requirements in 2024-2025. Texas Medicaid MCOs each set their own session frequency limits.

92928 Percutaneous coronary stent placement

Reported with affected vessel modifiers (-LD, -RC, -LC, -LM). Highest-prior-auth-rate code in Texas commercial cardiology.

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What's Included

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Cath lab billing — diagnostic, interventional, and same-session conversions

Coding for diagnostic catheterization (93458, 93452), PCI (92928, 92920), atherectomy (92924), and same-session conversions with NCCI-correct X-modifier discipline. Includes the post-2023 cath restructure codes 93593–93598 and TAVR/structural-heart procedure pathways.

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Stress testing — exercise, nuclear, pharmacologic, and stress echo

Component coding for exercise (93015), nuclear (78452, 78451), dobutamine (93350 + J-codes), and stress echo studies. Supervisor-identity discipline to prevent Aetna/BCBS bundle denials. Built around Heart Rhythm Society and ASE 2024 guidance.

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Device implants and the CIED revenue stream

Implant coding for pacemakers (33206–33208), ICDs (33249), CRT-Ds (33249 + 33225), leadless devices (33274), and loop recorders (33285). Includes generator changes, lead revisions, and 30-day-revision CARC-23 handling.

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Echocardiography — TTE, TEE, stress echo, and downcoding defense

Documentation templates for 93306 complete TTE that satisfy the seven required elements payers audit. TEE billing (93312, 93313, 93315), stress echo (93350), and 3D add-on coding (93325).

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EP studies, ablations, and the time-based component rule

Diagnostic EP studies (93620), atrial ablations (93656), VT ablations (93654), and 3D mapping add-ons (93613). Time-component documentation aligned with Heart Rhythm Society 2024 documentation guidance for catheter-ablation reporting.

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Remote cardiac monitoring — recurring revenue most practices miss

Remote interrogation billing for pacemakers (93294, 90 days), ICDs (93295, 90 days), CRT (93296), and implantable loop recorders (93298, 30 days). A 200-device practice typically captures $80,000–$120,000 in annual recurring revenue once monitoring billing is operationalized.

Compliance

Texas Billing Regulations & Compliance

The Texas Department of Insurance (TDI) sets the rules our Texas billing workflows have to satisfy. Surprise billing in Texas: Texas SB 1264 protects patients from surprise medical bills for out-of-network emergency care and certain facility-based services, effective since 2019. Telehealth parity: Texas requires private insurers to reimburse telehealth services at the same rate as in-person visits under SB 1107. Medicaid also covers telehealth with audio-only options.

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State Insurance Regulator

Texas Department of Insurance (TDI)

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Surprise Billing Protection

Texas SB 1264 protects patients from surprise medical bills for out-of-network emergency care and certain facility-based services, effective since 2019.

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Telehealth Billing Parity

Texas requires private insurers to reimburse telehealth services at the same rate as in-person visits under SB 1107. Medicaid also covers telehealth with audio-only options.

Metro Areas Served in Texas

Houston Dallas San Antonio Austin Fort Worth El Paso
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Common Questions

What is the prompt-pay deadline for cardiology claims in Texas?

Texas Insurance Code Chapter 843 sets two distinct prompt-pay deadlines: 30 days for HMO clean claims and 45 days for PPO clean claims, calculated from the date the payer receives an electronic claim that meets clean-claim definition. Failure to meet the deadline triggers 18% annual interest on the outstanding balance, payable to the provider. Cardiology practices benefit because high-dollar codes like 93458 (left heart cath) and 92928 (PCI with stent) accrue meaningful interest on stalled balances. We track every clean claim against the relevant clock, flag stalled payments before the deadline, and file TDI prompt-pay complaints when payers default. The Texas Department of Insurance (TDI) takes provider complaints seriously and pursues enforcement against repeat-offender plans.

How does BCBSTX prior auth work for cardiac imaging?

Blue Cross Blue Shield of Texas (BCBSTX) outsources high-tech cardiac imaging prior authorization to eviCore healthcare and Carelon Medical Benefits Management (formerly AIM Specialty Health). Stress echocardiography (93306 + 93351), nuclear cardiology codes (78451, 78452), cardiac CT angiography (75574), and cardiac MRI (75557, 75561) all require pre-procedure approval. We submit auth requests with the full clinical picture: presenting symptoms, prior testing results, ICD-10 diagnoses, and the medical necessity rationale referenced against ACC/AHA appropriate use criteria. eviCore typically responds within 2 business days for routine requests and same-day for urgent. Failed auths can be peer-to-peer appealed within 14 days. Skipping auth means a guaranteed denial with limited appeal grounds.

What is the Texas Medicaid timely filing window for cardiology?

Texas Medicaid fee-for-service holds a 365-day timely filing window from date of service. Each Texas Medicaid managed care MCO (Superior HealthPlan, Molina, UnitedHealthcare Community Plan, Amerigroup, Community Health Choice) sets its own filing clock on top of that — windows typically run 95-180 days for the MCOs. Commercial payers in Texas similarly run 95-180 day windows depending on contract. We track filing windows per payer in our claim queue and prioritize workflow so high-dollar cardiology claims (93458, 92928, 78452) clear authorization, charge entry, and submission well inside the shortest applicable deadline. Late submissions are caught at our claim-aging review and resubmitted before the deadline.

Are out-of-network cardiac emergency claims protected in Texas?

Yes. Texas SB 1264 (effective 2020) and the federal No Surprises Act (NSA, effective 2022) both protect Texas patients from balance billing for out-of-network emergency cardiac care, inpatient cardiac consults at in-network facilities, and air ambulance services for cardiac emergencies. The two regimes interact: ERISA self-funded plans (about 70% of the Texas commercial market) fall under the NSA, which uses the federal IDR process to set the qualifying payment amount. State-regulated plans fall under SB 1264, which uses Texas mediation. We bill emergency cardiac claims at the appropriate benchmark, pursue IDR or Texas mediation when the offered reimbursement is below median in-network rate, and document the medical necessity narrative each process requires.

Which Texas Medicaid MCO is most complex for cardiology?

Each Texas Medicaid MCO has distinct cardiology billing complexities, but Superior HealthPlan (Centene) covers the largest STAR+PLUS adult population — the Medicaid segment most likely to need cardiology services. Superior requires prior auth for cath lab procedures (93458, 92928), nuclear cardiology, and most echocardiography beyond initial diagnostic. Their portal workflow differs from Molina's (which uses a separate fax intake for cath auth) and UnitedHealthcare Community Plan's (which uses eviCore-style review for advanced imaging). For practices serving multiple MCOs, the operational answer is per-MCO templates: separate auth workflows, separate appeals templates, separate fee schedules in the EHR billing rules. We maintain those distinctions so the MCO mix doesn't drag clean-claim rate.

Does Texas have telehealth parity for cardiology consults?

Yes. Texas SB 1107 (effective 2017) requires private insurers to reimburse telehealth services at the same rate as in-person visits. Texas Medicaid covers telehealth, including audio-only options for certain populations. For cardiology, that means follow-up consults, remote ICD interrogation review (93295), and chronic care management (99490) discussions can be billed at parity when delivered via telehealth. Place of service is reported as POS 02 (telehealth other than home) or POS 10 (telehealth in patient's home), with modifier -95 (synchronous telehealth via real-time interactive audio and video). Audio-only encounters use modifier -93 for selected payers. Documentation must reflect the same level of medical decision-making as the equivalent in-person visit.

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