South Texas Mental Health Billing Service: 5 Easy Essentials
A South Texas mental health billing service handles insurance claims for therapy and psychiatry practices in the region from San Antonio to the Rio Grande Valley and the Gulf coast. Texas does not use one Medicaid plan list for the whole region. It splits South Texas into service areas, and each area has its own health plans. This guide shows the split and five essentials to confirm before you outsource.
What a South Texas mental health billing service has to sort out first
A South Texas mental health billing service has to know which Medicaid service area each client lives in, because Texas assigns health plans by area. The Texas Health and Human Services Commission (HHSC) groups South Texas counties into the Bexar, Hidalgo and Nueces service areas. The client’s plan on the date of service decides where the claim goes.
| Service area | Counties named by HHSC | STAR plans (children, families) | STAR+PLUS plans (adults 65+, adults with disabilities) |
|---|---|---|---|
| Bexar | Bexar, Comal, Guadalupe, Kendall, Medina and three others | Aetna, Community First, Superior, Wellpoint | Community First, Molina, United |
| Hidalgo | Hidalgo, Cameron, Webb, Starr, Maverick and five others | Driscoll, Molina, Superior, United | Superior, Molina, United |
| Nueces | Nueces, Victoria, Kleberg, San Patricio and ten others | Driscoll, Superior, United | Superior, Wellpoint |
Counties come from an HHSC handbook appendix (revision 25-2, effective June 6, 2025). Plans come from HHSC’s service area map, revised January 2026. Laredo’s county, Webb, sits in the Hidalgo area, and Corpus Christi’s county, Nueces, anchors the Nueces area. Community First Health Plans is based in San Antonio and was established by University Health. Driscoll Health Plan is based in Corpus Christi and serves 24 South Texas counties.
Rules by payer type for a South Texas mental health billing service
Keep private, Medicare and Medicaid rules separate. Each has its own filing clock and its own appeal path.
Private payers
Blue Cross and Blue Shield of Texas is a division of Health Care Service Corporation and an independent licensee of the Blue Cross and Blue Shield Association, per its provider site. Use its Availity link for claims and eligibility. Names such as Aetna and United on HHSC’s map are Medicaid plan listings. Their commercial plans follow separate manuals, so do not assume one rule covers both.
Medicare and Medicaid
The Centers for Medicare & Medicaid Services (CMS) lists Texas in Jurisdiction H, where Novitas Solutions holds the Original Medicare contract (announced June 24, 2026). For Medicaid, the Texas Medicaid & Healthcare Partnership (TMHP) managed care handbook says an initial claim sent to the correct plan must arrive within 95 days of the date of service. The behavioral health handbook says counselors, marriage and family therapists, clinical social workers and psychologists must be enrolled in Medicare or hold a pediatric practice exemption. It also limits listed psychotherapy codes to 30 visits per calendar year, with more needing prior authorization. A plan may apply its own steps. A Blue Cross Medicaid notice (5/14/2024) says that for LPC and LMFT claims, Medicare must be billed first or Texas Medicaid will deny them.
State rules
The Texas Department of Insurance (TDI) prompt pay FAQ says fully insured plans owe payment on clean claims within 30 days (electronic) or 45 days (paper), and providers file within 95 days. Medicaid and self-funded plans are excluded. For telehealth, Texas Medicaid pays audiovisual visits with modifier 95 and audio-only behavioral health with FQ, per the April 2026 handbook. Under Texas Insurance Code 1455.004, plans cover telehealth on the same basis as in person.
Five essentials for a South Texas mental health billing service
| Essential | What to confirm |
|---|---|
| 1. County and service area | The client’s county, which sets the Medicaid plan list |
| 2. Plan on the date of service | Run behavioral health insurance verification before the first visit |
| 3. Enrollment | Medicare enrollment for Medicaid therapists, and credentialing for each plan |
| 4. Filing clock | 95 days for Medicaid and under TDI’s rules; read your contract for others |
| 5. Remittance reading | Whether the service posts payments from the CARC and RARC codes and reports them monthly |
Does a South Texas mental health billing service need to know each Medicaid plan?
Yes. A South Texas mental health billing service sends Medicaid claims to the client’s plan, and that plan changes by service area. Ask which plans in Bexar, Hidalgo and Nueces the service bills today. Get the answer in writing, with its process for a claim sent to the wrong plan.
What to do Monday morning
- Add a county column to your client list.
- Match each Medicaid client’s county to its service area in the table above.
- Check the plan name on each client’s card against the HHSC map.
- Write each payer’s filing window beside its name.
- Ask any service you consider for a sample monthly paysheet report.
The short version: South Texas mental health billing service
A South Texas mental health billing service must route Medicaid claims by service area, file within the right window and keep private, Medicare and Medicaid rules apart. Confirm county, plan, enrollment and reporting before you sign.
How MCM South helps
MCM South Medical Billing Service, LLC bills exclusively for mental and behavioral health. We work with psychotherapists and psychiatrists in solo and medium-size practices, and we bill out-of-network claims for clients. Texas is one of our ten currently served states, and some of our staff are bilingual in Spanish.
Keep going
Related reading
Ready to hand off the billing side? We can talk through your practice.
FAQ
Is Laredo in the same Medicaid service area as the Rio Grande Valley?
HHSC lists Webb County, where Laredo sits, in the Hidalgo service area with Hidalgo and Cameron counties. Check the client’s county, since plans are assigned by area.
Which Medicaid plans operate in Bexar County?
HHSC’s January 2026 map lists Aetna, Community First, Superior and Wellpoint for STAR, and Community First, Molina and United for STAR+PLUS. Confirm the client’s plan on the date of service.
How many days do I have to file a Texas Medicaid claim?
The TMHP managed care handbook says 95 days from the date of service for an initial claim sent to the correct plan. Other situations have their own rules in the same section.
Can a South Texas practice use a billing service in another state?
Yes, if the service bills in Texas, knows these Medicaid areas and gives you a signed HIPAA business associate agreement. Ask for its Texas payer list in writing.
Where MCM South works
MCM South Medical Billing Service, LLC works with psychotherapists and psychiatrists in our ten currently served states: Georgia, Massachusetts, Connecticut, Texas, Florida, New York, Colorado, Tennessee, North Carolina and Illinois. We serve solo and medium-size practices that bill mental and behavioral health. Founder Michael Williams has worked with insurance payers in all 50 states. Browse the state and regional billing guides for rules that vary by state, or see our billing services.
This post is operational guidance for billing, not legal advice. Rules change, so confirm with the payer or your counsel.
