The Kate Cox abortion case in Texas was the first time after Roe v. Wade was overturned that a pregnant woman in the United States asked a court for permission to end her pregnancy under a state’s medical exception. In December 2023, Cox, a Dallas mother of two carrying a fetus with a fatal diagnosis and facing risks to her own health and future fertility, won a temporary restraining order from a Travis County judge, lost it three days later when the Texas Supreme Court intervened, and left Texas to obtain the abortion elsewhere. The ruling that followed set the terms physicians still work under today.
Why Cox Sought an Abortion
At about 20 weeks of pregnancy, Cox learned her fetus had full Trisomy 18, a chromosomal condition that causes severe organ and structural abnormalities. Most pregnancies with Trisomy 18 end in miscarriage or stillbirth, and infants who survive delivery rarely live more than a few days. The Texas Supreme Court later acknowledged in its opinion that “any parents would be devastated to learn of their unborn child’s trisomy 18 diagnosis” and that Cox’s pregnancy had been “extremely complicated.”1Texas Courts. In re State of Texas, No. 23-0994
The pregnancy also threatened Cox’s own health. She had already undergone two cesarean sections. Her physicians warned that carrying to term would require a third C-section, raising her risk of uterine rupture and a possible hysterectomy that would permanently end her ability to have more children. Her doctors believed an abortion was medically warranted but were unwilling to perform one under Texas law without a court first saying it was permitted.
The Lawsuit and the Trial Court Order
About a week after the diagnosis, Cox and her husband filed suit in Travis County District Court. Their attorneys asked for a temporary restraining order blocking Texas from enforcing its abortion bans against her physician, Dr. Damla Karsan, so the procedure could go forward without threat of prosecution or civil penalties.1Texas Courts. In re State of Texas, No. 23-0994 They argued Cox’s condition met the medical exception in state law and that continuing the pregnancy would cause irreparable harm.
On December 7, 2023, District Judge Maya Guerra Gamble granted the order. The judge found that without the procedure, Cox stood to lose her ability to become a parent again, and called the alternative a “genuine miscarriage of justice.” The order temporarily shielded Dr. Karsan and her staff from state enforcement, opening a narrow window for the abortion to take place in Texas.
The Attorney General’s Response
Within hours, Attorney General Ken Paxton sent letters to three Houston hospitals where Dr. Karsan held admitting privileges. The letters warned that the judge’s order “does not insulate hospitals, doctors, or anyone else” from criminal prosecution or civil penalties under Texas abortion laws, citing first-degree felony exposure under the Human Life Protection Act and civil penalties of at least $100,000 per violation.2State of Texas. Texas Health and Safety Code 170A.004 – Criminal Offense
Paxton also pointed to Senate Bill 8, which allows any private citizen to sue anyone who performs or aids an abortion and collect at least $10,000 per abortion in statutory damages, with no risk of paying the defendant’s legal fees if the suit fails.3Texas Legislature. 87th Legislature SB 8 – Enrolled Because the trial court’s order only bound state officials, private suits against the doctor, the hospital, and anyone who helped Cox remained possible.
The same day, the Attorney General’s office skipped the normal appellate step and filed directly with the Texas Supreme Court. On December 8, the court stayed the lower court’s order while it reviewed the case, putting the threat of prosecution back in place.1Texas Courts. In re State of Texas, No. 23-0994
What the Texas Supreme Court Ruled
On December 11, 2023, the Texas Supreme Court vacated the restraining order and denied Cox’s request. The court did not hold that her situation could never qualify for the medical exception. It held that the physician’s affidavit lacked the specificity needed for a court to grant pre-emptive legal protection.1Texas Courts. In re State of Texas, No. 23-0994
More importantly, the ruling settled a question about who decides. Under the Human Life Protection Act, the medical exception applies when a physician, exercising reasonable medical judgment, determines the patient has a life-threatening condition made worse by the pregnancy that puts her at risk of death or serious impairment of a major bodily function.4State of Texas. Texas Health and Safety Code 170A.002 – Prohibited Abortion; Exceptions The court held that call belongs to the physician, not to a judge granting advance permission. A doctor’s good-faith judgment that the exception applies works as a defense if prosecution follows. It is not something a court will bless in advance.
For Cox, that answer was no help. The legal risk sat entirely with the doctor, and the “defense” was something to raise at trial, not a shield against being charged in the first place.
Cox Left Texas for the Procedure
With the stay in place and no path to legal protection in Texas, Cox could not obtain the abortion in her home state. While the Supreme Court was finalizing its opinion, she traveled out of state and ended the pregnancy there. By the time the December 11 ruling came down, the case was moot as to her, though the legal principles it established applied to every physician and patient in Texas after her.
She had received the diagnosis at 20 weeks, spent a week pursuing legal relief, and then arranged travel at an advanced stage of pregnancy while her health risks continued to grow, bearing costs that patients in states without bans do not face: transportation, lodging, time away from work and from her two existing children.
What Changed After the Ruling
The Cox opinion directed the Texas Medical Board to issue clearer guidance on when the medical exception applies. In June 2024, the Board adopted Sections 165.7 through 165.9 of its administrative code. The rules clarified that a physician does not need to wait for a threat to become imminent, that medical records can be completed after emergency treatment rather than before, and that ectopic pregnancies fall within the exception. The Board declined to publish a list of qualifying conditions, saying “any list would be incomplete and not necessarily applicable to a given medical situation.”5Texas Medical Board. TMB Provides Clarification on Rules Regarding Exceptions to the Ban on Abortions The Board’s own president conceded that the rules “may not answer the concerns and questions that arise in every single situation.”
A parallel case, Zurawski v. State of Texas, brought by twenty-two women and two physicians, reached the Texas Supreme Court in May 2024. The court ruled that the law “does not require that a woman’s death be imminent” and that a physician may “address the risk that a life-threatening condition poses before a woman suffers the consequences of that risk.” But it also held that the law “does not permit abortion based solely on a diagnosis that an unborn child has an abnormal condition, even a life-limiting one.”6Texas Courts. Zurawski v. State of Texas, No. 23-0629 A fetal diagnosis like Cox’s, standing alone, would not trigger the exception. The patient would also need to show a threat to her own life or major bodily function.
In 2025, the Texas Legislature passed Senate Bill 31 to put those court clarifications into statute. The bill confirmed that a physician may act before the patient suffers any effects of a life-threatening condition and does not have to wait for the risk to become imminent. It defined “life-threatening” as “capable of causing death or potentially fatal,” so a condition does not need to be currently lethal to qualify. It removed the prior requirement that physicians perform the abortion in the manner most likely to allow the fetus to survive. And it stated expressly that reasonable medical judgment includes removing an ectopic pregnancy or a dead fetus after a spontaneous miscarriage.7Texas Legislature. 89th Legislature SB 31 – Enrolled SB 31 also directed that the exception be construed consistently with the Cox and Zurawski opinions, writing those rulings into law.
The underlying structure did not change. The doctor still makes the call, and the doctor still carries the legal risk if a prosecutor later disagrees. What changed is that the statute now describes more clearly the range of situations where a physician can act without waiting for a patient to deteriorate.
The Federal EMTALA Question
One piece of the picture Cox’s case did not settle sits at the federal level. The Emergency Medical Treatment and Labor Act requires hospitals that accept Medicare funds to stabilize patients with emergency medical conditions. In cases where an abortion is the only way to prevent death or serious organ damage, EMTALA may require the procedure even when state law prohibits it. The U.S. Supreme Court took up this conflict in Moyle v. United States but in June 2024 dismissed the case without reaching the merits, leaving the underlying question unresolved.8Supreme Court of the United States. Moyle v. United States, No. 23-726 In June 2025, the Department of Health and Human Services rescinded Biden-era guidance that had reminded hospitals of their EMTALA obligations in emergency abortion care. For a Texas physician weighing a situation like the one Cox presented, the federal backstop is less explicit than it was, and the state-level ambiguity her case first exposed is still the one that governs the decision at the bedside.