CROSSOVER: Medical Records Are Not Shielded from a Valid Grand-Jury Subpoena—But the State Cannot Use One as a Sham Investigative Tool

Miller v. State, 03-24-00792-CR, October 08, 2026.

On appeal from County Court of Milam County

Synopsis

Hospital blood-alcohol records obtained through a valid grand-jury subpoena were not subject to suppression under article 38.23(a) when the investigation was supported by specific facts indicating DWI, including a single-vehicle crash, the odor of alcohol, and an open container. Although a grand-jury subpoena cannot serve as an arbitrary fishing expedition or a substitute for unauthorized prosecutorial discovery, the subpoena in Miller lawfully required disclosure of records in which the defendant had no Fourth Amendment privacy interest.

Relevance to Family Law

Miller matters to Texas family-law litigators when a divorce or SAPCR overlaps with a criminal investigation involving intoxication, impaired driving, family violence, or conduct affecting a child’s safety. Medical records generated during emergency treatment may become relevant to conservatorship, possession, geographic restrictions, injunctions, or requests for supervised access, particularly when the records document alcohol or drug use close in time to an incident involving a parent or child.

The opinion does not authorize a family-law attorney to use a grand-jury subpoena. That authority belongs to the grand jury and the attorney representing the State under the Code of Criminal Procedure. Nor does Miller eliminate HIPAA, the physician-patient privilege, or the procedural requirements governing medical-record discovery in civil cases. It does, however, underscore that medical confidentiality is not absolute and that records lawfully disclosed in a related criminal investigation may later become significant evidence in family litigation, subject to the Texas Rules of Evidence, discovery rules, authentication requirements, protective orders, and any applicable privileges.

Case Summary

Fact Summary

Ryan David Miller drove his truck off a curve on a rural Milam County road, struck a warning sign, entered a drainage ditch, and came to rest against a tree. He was the vehicle’s sole occupant and was seriously injured, intermittently unconscious, and unable to communicate with investigating officers.

A sheriff’s deputy observed an open alcoholic-beverage container in the passenger compartment and detected the odor of metabolized alcohol coming from Miller or his immediate vicinity. The deputy relayed those observations to the investigating DPS trooper. The trooper also smelled alcohol and saw open and unopened beer bottles in the truck. Emergency personnel transported Miller to a hospital for treatment.

Because the trooper believed Miller might have been driving while intoxicated, he requested a grand-jury subpoena duces tecum for the hospital records associated with the crash. The records disclosed a hospital blood-alcohol test. According to the trooper, the hospital reported a BAC of .173, which he converted to a legally relevant BAC of .149.

Miller was charged with misdemeanor DWI and moved to suppress the blood-alcohol evidence. He argued that the trooper lacked reasonable suspicion of criminal activity and that the State had misused or failed to comply with the statutes governing grand-jury subpoenas. After an evidentiary hearing, the trial court denied suppression. Miller pleaded guilty while reserving his right to appeal that ruling.

Issues Decided

• Whether the grand-jury subpoena for Miller’s hospital blood-alcohol records constituted an arbitrary fishing expedition or sham investigative device because the investigating trooper allegedly lacked reasonable suspicion of DWI.

• Whether the State failed to comply with the Code of Criminal Procedure provisions governing the issuance and service of grand-jury subpoenas.

• Whether article 38.23(a) required suppression of the hospital records because they were allegedly obtained in violation of state or federal law.

Rules Applied

The Third Court applied the following authorities:

• Fourth Amendment treatment of hospital blood tests. When the State draws and tests a suspect’s blood, the extraction and analysis may constitute separate Fourth Amendment searches. State v. Huse, 491 S.W.3d 833, 840 (Tex. Crim. App. 2016).

• No Fourth Amendment privacy interest in hospital blood-alcohol results disclosed under lawful process. Blood drawn and tested by hospital personnel solely for medical purposes does not carry a Fourth Amendment privacy interest sufficient to prevent disclosure through a valid grand-jury subpoena. State v. Hardy, 963 S.W.2d 516, 527 (Tex. Crim. App. 1997).

• HIPAA does not displace Hardy. HIPAA reflects an expectation that protected health information ordinarily will remain private, but it permits disclosure when a healthcare provider is required to respond to qualifying legal process, including a grand-jury subpoena. Huse, 491 S.W.3d at 842; 45 C.F.R. § 164.512.

• Limits on grand-jury subpoenas. Grand juries possess broad investigative authority, but they may not conduct arbitrary fishing expeditions, select investigative targets for impermissible reasons, or issue subpoenas so sweeping that they are unreasonable. United States v. R. Enterprises, Inc., 498 U.S. 292, 299 (1991); United States v. Dionisio, 410 U.S. 1, 11 (1973).

• Reasonable suspicion. Articulable facts support reasonable suspicion when they indicate that unusual activity occurred, connect the person under investigation to that activity, and suggest that the activity was crime-related. Derichsweiler v. State, 348 S.W.3d 906, 916 (Tex. Crim. App. 2011).

• Authority to issue grand-jury subpoenas. The grand-jury foreperson or the attorney representing the State may issue a subpoena on the grand jury’s behalf, including a subpoena directed to an in-county or out-of-county witness. Tex. Code Crim. Proc. arts. 20A.251–.252.

• Subpoenas duces tecum and service. A subpoena may require a witness to appear and produce records or documents and may be served through delivery of a copy to the witness. Tex. Code Crim. Proc. arts. 24.02, 24.04.

• Presumption of regularity. The purported acts of a grand jury receive a presumption of regularity, and the party challenging those acts bears the burden of overcoming that presumption. Huse, 491 S.W.3d at 845, 847.

• Texas exclusionary rule. Article 38.23(a) excludes evidence obtained in violation of the United States Constitution, the Texas Constitution, or Texas law. Tex. Code Crim. Proc. art. 38.23(a). A defect in the subpoena process can potentially trigger the statute, but only if the challenger proves a legally material violation.

Application

The court began with the concrete facts known to law enforcement before the subpoena issued. Miller’s truck had left the roadway at a curve, struck a sign, entered a ditch, and collided with a tree. Miller was identified as the driver and sole occupant. Both responding officers smelled alcohol, and alcoholic-beverage containers—including an open container—were visible in the passenger compartment.

Those circumstances supplied each component of the reasonable-suspicion analysis. The severe single-vehicle crash constituted unusual activity. Miller’s position as the driver connected him to that activity. The odor of alcohol and presence of an open container suggested a relationship between the crash and the offense of DWI. The subpoena therefore was not based merely on Miller’s lawful possession or consumption of alcohol.

The court emphasized that reasonable suspicion is not itself a prerequisite to every valid grand-jury subpoena. A grand jury has broad authority to investigate whether a crime occurred and may act on information that would not independently establish probable cause. Nevertheless, the existence of specific facts supporting reasonable suspicion defeated Miller’s contention that this subpoena was an arbitrary or sham investigative measure.

The court also rejected the statutory challenge to the subpoena process. Texas law permits either the grand-jury foreperson or the attorney representing the State to issue a subpoena on the grand jury’s behalf, and the subpoena may compel production of records. The challenged process carried a presumption of regularity, which Miller did not overcome with evidence establishing a legally material defect.

Because hospital personnel drew and tested Miller’s blood for medical treatment rather than at the State’s direction, Hardy and Huse foreclosed his asserted Fourth Amendment privacy interest in the test results once the hospital was required to disclose them through lawful grand-jury process. HIPAA did not require a different result because its regulatory framework permits disclosure in response to qualifying legal process.

Without an underlying constitutional or statutory violation in obtaining the records, article 38.23(a) provided no basis for exclusion.

Holding

The court held that the subpoena for Miller’s hospital blood-alcohol records was not an arbitrary fishing expedition. The single-vehicle collision, Miller’s identification as the driver, the odor of alcohol, and the open container supplied specific, articulable facts supporting reasonable suspicion that he had committed DWI.

The court further held that Miller did not establish a violation of the statutes governing grand-jury subpoenas. The subpoena was entitled to a presumption of regularity, and the record did not demonstrate a defect requiring exclusion.

Finally, the court held that article 38.23(a) did not require suppression. Miller had no Fourth Amendment privacy interest sufficient to prevent the hospital from disclosing medical blood-alcohol results in response to a valid grand-jury subpoena, and the records were not obtained in violation of state or federal law. The court affirmed the trial court’s judgment.

Practical Application

Family-law practitioners should distinguish between obtaining medical records directly through civil discovery and using records already produced in a related criminal investigation. A family-law subpoena remains subject to Texas civil procedure, HIPAA, applicable privileges, proportionality, and protective-order practice. Miller does not permit civil counsel to invoke grand-jury authority or bypass those safeguards.

In a conservatorship dispute, evidence of intoxication may be relevant to the child’s best interest, possession conditions, supervised visitation, substance-monitoring provisions, or temporary restraints. Counsel should connect the medical evidence to a specific event and a disputed best-interest issue rather than requesting broad categories of medical information untethered to the pleaded controversy.

In divorce litigation, medical blood-alcohol records may also relate to reimbursement claims, characterization disputes involving accident liabilities, contractual indemnity issues, or requests for temporary orders concerning vehicles and insurance. Even then, relevance does not automatically defeat privilege or privacy protections. The requested period, provider, incident, and category of records should be narrowly identified.

When a criminal case is pending, counsel should coordinate discovery strategy with criminal counsel. A civil deposition, request for disclosure, or medical authorization can create Fifth Amendment and waiver consequences. Conversely, criminal-case records may provide authenticated documents, witness identities, body-camera footage, or investigative timelines relevant to the family matter.

Practitioners should also avoid treating article 38.23 as a general civil exclusionary rule. Miller is a criminal suppression decision. Whether evidence is admissible in a divorce or SAPCR will ordinarily turn on the Texas Rules of Evidence, civil discovery law, privilege, authentication, hearsay, and any governing protective order—not on article 38.23 alone.

Checklists

Evaluating Medical Records in a SAPCR

• Identify the specific conservatorship, possession, or child-safety issue to which the records relate.
• Connect the requested records to a defined incident, date range, provider, or diagnosis.
• Determine whether the records concern treatment, laboratory testing, communications with a physician, or another potentially privileged category.
• Analyze the physician-patient privilege and all applicable statutory exceptions.
• Evaluate HIPAA compliance separately from discoverability and admissibility.
• Consider whether redaction can protect irrelevant medical information.
• Request an appropriate protective order when sensitive records must be produced.
• Develop evidence connecting the medical information to the child’s best interest.

Obtaining Records Through Civil Process

• Do not use a civil subpoena as though it carried grand-jury authority.
• Confirm that the subpoena complies with Texas Rule of Civil Procedure 176.
• Address notice requirements for nonparty discovery under Rules 205 and 199, as applicable.
• Serve any required authorization, qualified protective order, or court order.
• Define the records sought with reasonable specificity.
• Avoid requests for a party’s entire medical history when only one incident is at issue.
• Anticipate objections based on relevance, proportionality, privilege, privacy, and undue burden.
• Preserve proof of issuance, service, objections, compliance, and chain of custody.

Handling a Criminal–Family Law Overlap

• Determine whether a criminal investigation, grand-jury proceeding, or prosecution is pending.
• Coordinate with criminal defense counsel before seeking testimony or admissions.
• Evaluate Fifth Amendment implications before noticing a deposition.
• Obtain certified copies of public or lawfully available criminal-case records.
• Confirm whether a criminal protective order or sealing provision restricts use or disclosure.
• Separate preliminary allegations from admissible evidence.
• Preserve body-camera footage, dispatch records, photographs, and witness information promptly.
• Consider whether temporary family-court relief is warranted before the criminal matter concludes.

Preparing to Offer Medical Evidence

• Authenticate the records through a custodian affidavit, stipulation, or sponsoring witness.
• Address hearsay and the business-records exception.
• Distinguish the laboratory result from any later extrapolation or conversion.
• Retain a qualified expert when interpretation, retrograde extrapolation, or impairment is disputed.
• Confirm that the testing methodology and units are accurately presented.
• Redact unrelated diagnoses, medications, and treatment information.
• Prepare a limiting request if the court should consider the evidence only for a defined purpose.
• Ensure that exhibits comply with sealing and sensitive-data requirements.

Challenging Medical-Record Evidence

• Identify the precise constitutional, statutory, privilege, discovery, or evidentiary violation alleged.
• Determine who drew the sample, who ordered the test, and whether the test served a medical or law-enforcement purpose.
• Examine the subpoena’s issuer, scope, date, service, return, and custodian response.
• Develop evidence sufficient to overcome any applicable presumption of regularity.
• Avoid relying solely on generalized privacy arguments.
• Challenge overbreadth by identifying irrelevant categories and proposing narrower alternatives.
• Preserve objections and obtain an express ruling.
• Request findings or create a clear record when appellate review is foreseeable.

Citation

Miller v. State, No. 03-24-00792-CR (Tex. App.—Austin Oct. 8, 2026) (mem. op.).

Full Opinion

Read the full opinion.

Family Law Crossover

The crossover principle is that medical confidentiality does not create an absolute evidentiary shield when records are produced under valid legal process. In Miller, the relevant mechanism was a grand-jury subpoena duces tecum issued under the Code of Criminal Procedure. The subpoena required a healthcare provider to produce records of testing performed for medical treatment, and HIPAA permitted disclosure in response to that qualifying process. Because the defendant did not establish that the subpoena was unlawful, article 38.23(a) did not require suppression.

This mechanism can intersect with a Texas family-law matter when an incident relevant to conservatorship, possession, or child safety also results in a criminal investigation. Records produced to a grand jury may identify evidence relevant to the parallel family proceeding, but family counsel must obtain and use that evidence through an authorized route. The criminal subpoena does not become civil discovery merely because a divorce or SAPCR is pending.

The broader procedural lesson is to identify the legal process responsible for disclosure and analyze its validity under the rules governing that process. In criminal court, that may involve grand-jury authority and article 38.23. In family court, it ordinarily involves Rules 176 and 205, HIPAA-compliant process, privilege law, proportionality, protective orders, and the Rules of Evidence. In either setting, narrowly targeted process tied to specific facts is more defensible than a generalized demand for a litigant’s medical history.

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