TEXAS INJURY LAW REFERENCE
TEXAS LEGAL DISCLAIMER: (1) Educational Texas statutory reference only — NOT legal advice; (2) Using this site or its calculators creates NO attorney-client relationship; (3) Content may be incomplete or change by statute/case law; (4) Always verify deadlines and rights with a licensed Texas attorney; (5) Statutory formulas and examples create NO guarantee of results; (6) Not a law firm or lawyer referral service. Full 6-Point Legal Disclaimer ↓
Jurisdiction: State of Texas OnlyReviewed by: Texas Legal Reference Editorial BoardUpdated: 2026-10-28Authority: Tex. Civ. Prac. & Rem. Code § 18.001(b)–(i) (2019 HB 1693 Deadlines)

What Are CPRC § 18.001 Medical Expense Affidavits & Counter-Affidavits in Texas Lawsuits?

Governing Texas StatuteTex. Civ. Prac. & Rem. Code § 18.001(b)–(i) (2019 HB 1693 Deadlines)
Controlling Texas CaseIn re Allstate Indemnity Co., 622 S.W.3d 870 (Tex. 2021)
Topic CategoryMedical Bills, Hospital Liens & Subrogation

Direct Answer Under Texas Law

Under Texas Civil Practice and Remedies Code § 18.001, a plaintiff can prove that their medical bills were 'reasonable in amount' and that the treatment was 'necessary' by serving sworn business-records affidavits from each medical provider's custodian of records at least 90 days after the defendant files its answer—saving thousands of dollars in live doctor trial testimony! The defendant then has 30 days (or 120 days from its answer) to serve a § 18.001(f) 'Counter-Affidavit' from a qualified expert.

Critical Texas Procedural Trap to Watch Out For

In the landmark case In re Allstate Indemnity Co., 622 S.W.3d 870 (Tex. 2021), the Texas Supreme Court held that even if a trial judge strikes a defendant's defective § 18.001 counter-affidavit, the defendant is STILL permitted to cross-examine witnesses and argue at trial that the medical charges were unreasonable!

Recommended Action Plan for Texas Claimants

Order compliant § 18.001 Cost & Necessity Affidavits from every treating provider as soon as treatment concludes and calendar the strict HB 1693 90-day / 120-day filing deadlines.

Detailed Texas Statutory & Case Law Breakdown

Under Tex. Civ. Prac. & Rem. Code § 18.001(b)–(i) (2019 HB 1693 Deadlines) and controlling Texas appellate precedent in In re Allstate Indemnity Co., 622 S.W.3d 870 (Tex. 2021), Texas trial and appellate courts apply strict statutory rules to this exact issue. Unlike generic multi-state legal summaries, Texas tort procedure under the Civil Practice and Remedies Code (CPRC), Insurance Code, Transportation Code, and Labor Code enforces specific statutory formulas—including the 51% proportionate responsibility bar (CPRC § 33.001), paid-or-incurred medical expense admissibility (CPRC § 41.0105 / Haygood), and mandatory statutory lien caps (Prop. Code Ch. 55 & Ins. Code Ch. 140).

Step-by-Step Texas Procedural Checklist

  • Verify the exact statutory text of Tex. Civ. Prac. & Rem. Code § 18.001(b)–(i) (2019 HB 1693 Deadlines) and how Texas courts apply In re Allstate Indemnity Co., 622 S.W.3d 870 (Tex. 2021) in your county's appellate district.
  • Beware of the Texas Procedural Trap: In the landmark case In re Allstate Indemnity Co., 622 S.W.3d 870 (Tex. 2021), the Texas Supreme Court held that even if a trial judge strikes a defendant's defective § 18.001 counter-affidavit, the defendant is STILL permitted to cross-examine witnesses and argue at trial that the medical charges were unreasonable!
  • Execute the Texas Action Plan: Order compliant § 18.001 Cost & Necessity Affidavits from every treating provider as soon as treatment concludes and calendar the strict HB 1693 90-day / 120-day filing deadlines.
  • Preserve all physical, electronic, and medical billing records early so your CPRC § 18.001 affidavits and TRCP 194.2 Initial Disclosures are complete.

Frequently Asked Questions Under Texas Law

What Are CPRC § 18.001 Medical Expense Affidavits & Counter-Affidavits in Texas Lawsuits?

Under Texas Civil Practice and Remedies Code § 18.001, a plaintiff can prove that their medical bills were 'reasonable in amount' and that the treatment was 'necessary' by serving sworn business-records affidavits from each medical provider's custodian of records at least 90 days after the defendant files its answer—saving thousands of dollars in live doctor trial testimony! The defendant then has 30 days (or 120 days from its answer) to serve a § 18.001(f) 'Counter-Affidavit' from a qualified expert. Key Texas Trap to Avoid: In the landmark case In re Allstate Indemnity Co., 622 S.W.3d 870 (Tex. 2021), the Texas Supreme Court held that even if a trial judge strikes a defendant's defective § 18.001 counter-affidavit, the defendant is STILL permitted to cross-examine witnesses and argue at trial that the medical charges were unreasonable!

What Texas statute and Supreme Court / appellate precedent control cprc § 18.001 medical affidavits explained?

This question is governed in Texas by Tex. Civ. Prac. & Rem. Code § 18.001(b)–(i) (2019 HB 1693 Deadlines) and the legal standards articulated in In re Allstate Indemnity Co., 622 S.W.3d 870 (Tex. 2021). Recommended step: Order compliant § 18.001 Cost & Necessity Affidavits from every treating provider as soon as treatment concludes and calendar the strict HB 1693 90-day / 120-day filing deadlines.

Mandatory 6-Point Texas Legal Disclaimer & Notice

  • 1. Not Legal Advice: This website provides general educational and statutory reference information strictly scoped to Texas personal injury law, Texas courts, and Texas statutes. Nothing on this site constitutes legal advice, a legal opinion, or counseling on any specific set of facts.
  • 2. No Attorney-Client Relationship: Viewing this website, reading any statutory or procedural guide, or using any interactive calculator, checklist, or reference tool does not create an attorney-client relationship between you and this publisher or any contributor.
  • 3. Content May Be Inaccurate or Outdated: Although articles reference the Texas Civil Practice and Remedies Code (CPRC), Texas Transportation Code, Texas Insurance Code, Texas Labor Code, Texas Rules of Civil Procedure (TRCP), and published decisions of the Supreme Court of Texas and the 15 Texas Courts of Appeals, legislation and appellate holdings change continually. Information on this website may be incomplete, inaccurate, or superseded by subsequent statutory amendments or judicial opinions.
  • 4. Verify With a Licensed Texas Attorney: Deadlines under Tex. Civ. Prac. & Rem. Code § 16.003, municipal charter notice windows under § 101.101, and comparative fault bars under Chapter 33 are strictly enforced. Always verify your legal rights, filing deadlines, and jurisdictional rules directly with an attorney licensed and in good standing with the State Bar of Texas.
  • 5. No Guarantee of Results: Statutory damage cap formulas, proportionate responsibility illustrations, and medical bill adjustment examples are mathematical and educational illustrations only. They do not predict, warrant, or guarantee any specific verdict, settlement amount, or legal outcome in any Texas court.
  • 6. Independent Reference Portal — Not a Law Firm: Texas Injury Law Reference is an independent legal education publication. We are not a law firm, do not practice law, do not solicit clients, and do not operate as an attorney referral service.