To win a birth injury lawsuit against an obstetrician, you must prove four things: that the doctor owed you a duty of care, that the care fell below the professional standard, that the substandard care caused the injury, and that the injury produced compensable losses. A bad outcome by itself proves nothing — the question is whether a reasonably competent obstetrician with similar training would have acted differently in the same circumstances. Birth injury claims are medical malpractice cases, which means they are governed by rules that do not apply to ordinary injury lawsuits: expert testimony is mandatory, pre-suit filings are often required, and the deadlines for an injured child differ from the adult ones. Understanding those four elements and the procedural hurdles around them is what tells you whether your situation is worth a consultation.
Official resources:
- Read the original report from Texas — Use this primary source to review the complete report.
- Explore the official data from CDC — Use this primary source to review the underlying data.
Table of Contents
- The four elements, and why "breach" is the hard one
- Who proves it, and with what documents
- The medical benchmark for linking cerebral palsy to labor
- The defense's two strongest numbers
- Pre-suit filings that can end a strong case
- Deadlines for an injured child
- Frequently Asked Questions
The four elements, and why "breach" is the hard one
Duty is usually the easiest element. Once an OB-GYN accepts you as a patient and takes responsibility for your prenatal care or delivery, the physician-patient relationship exists and the duty follows automatically. Damages — medical costs, lifelong care, lost earning capacity, pain and suffering — are typically documented by records and expert economists rather than contested in principle. Breach is where cases are won and lost.
As Wilson Law's summary of birth injury case elements explains, courts measure breach against what a reasonably competent practitioner of similar training would have done in the same circumstances — not against the outcome. An obstetrician who makes a defensible judgment call that turns out badly has not breached the standard of care. That distinction frustrates many families. A child with a permanent injury is living proof that something went wrong, but it is not proof that the doctor did anything wrong. The law requires you to identify the specific act or omission — a misread fetal heart tracing, a delayed cesarean, excessive traction during a shoulder dystocia — that a competent practitioner would have avoided.
Who proves it, and with what documents
You cannot prove breach or causation with your own testimony. According to Spangenberg Shibley & Liber's January 2024 analysis of malpractice proof, causation is established almost entirely through expert testimony from another physician in the field, who must testify both to what the standard of care required and to whether the defendant departed from it. The documentary backbone is the delivery-room record: fetal monitoring strips, nursing notes, timestamps on orders and interventions, anesthesia records, cord blood gas results, and the neonatal chart.
Nursing notes matter disproportionately because they often record the timing of events — when a nurse paged the physician, how long the physician took to arrive — that the physician's own note omits. Request the complete record early, including the raw fetal monitoring data rather than a summary. An expert reviewing a tracing minute by minute can identify when a non-reassuring pattern appeared and how long it continued before anyone acted. That interval is frequently the whole case.
The medical benchmark for linking cerebral palsy to labor
If your claim is that oxygen deprivation during labor caused your child's cerebral palsy, there is a specific medical standard your experts must satisfy. The ACOG/AAP task force report on neonatal encephalopathy — second edition, 2014, reaffirmed in 2019 — sets out the criteria that point to an intrapartum cause: Encephalopathy here means clinically evident brain dysfunction in the newborn — abnormal consciousness, tone, reflexes, or seizures — appearing in the first hours of life.
The pH and base deficit figures come from blood drawn from the umbilical cord artery at delivery, which is why those results are among the first things a reviewing expert looks for. If those criteria are not met, the case against the obstetrician does not necessarily fail, but the theory has to be something other than intrapartum hypoxia — a medication error, a failure to diagnose and treat an infection, or a physical injury during an instrumented delivery.
- Umbilical artery pH below 7.0 and/or a base deficit of 12 mmol/L or more
- Early-onset moderate-to-severe encephalopathy in an infant at 34 weeks' gestation or later
- Cerebral palsy of the spastic quadriplegic or dyskinetic type
- Exclusion of other causes: trauma, coagulopathy, infection, and genetic disorders
The defense's two strongest numbers
The same ACOG/AAP report that supports plaintiffs also arms the defense, and families should know the thresholds before they spend money. Per the report as published in Pediatrics, a cord arterial pH above 7.20 makes an intrapartum hypoxic cause unlikely, and a 5-minute Apgar score of 7 or higher makes it unlikely that peripartum hypoxia-ischemia played a major role in causing neonatal encephalopathy. Those two values are in your child's chart. If the cord pH was 7.25 and the 5-minute Apgar was 8, a defense expert will build the case around those numbers, and a plaintiff's expert will have difficulty answering them.
The broader epidemiology also cuts against the assumption that delivery caused the injury. CDC data on cerebral palsy put prevalence at roughly 1 in 345 eight-year-olds — about 3 per 1,000 — with network figures falling from 3.5 to 2.9 per 1,000 between 2006 and 2010. Most of that burden is driven by prematurity and prenatal factors, not by events during labor. Defense counsel will cite exactly that.
Pre-suit filings that can end a strong case
Before a malpractice case can proceed, most states require a formal statement that a qualified expert believes the claim has merit. The Expert Institute's 2025 state-by-state survey counts 29 states with such a requirement. A certificate of merit may be signed by the attorney; an affidavit of merit must be sworn by a qualified expert. A missing or defective filing exposes the case to dismissal even when the underlying claim is strong. Texas is the harshest version.
Under Civil Practice and Remedies Code §74.351, the claimant must serve an expert report and the expert's CV no later than the 120th day after each defendant files its original answer. On the defendant's motion, the court shall dismiss with prejudice and award that defendant attorney's fees and costs. Only one 30-day cure period is available for a deficient report. Read that penalty carefully: dismissal with prejudice means the claim is gone permanently, and the family pays the defense's legal bill. This is the single strongest reason not to let a birth injury claim sit while you decide what to do.
Deadlines for an injured child
The filing deadline for a child is not the adult deadline, and it is not uniform across states. California is a useful example. Under Code of Civil Procedure §340.5, a minor has three years from the wrongful act, but a child injured before age six may sue up to the eighth birthday if that period is longer. Tolling is narrow — it applies only where there was fraud, or collusion between a parent or guardian and the provider or insurer.
Late diagnosis is common with birth injuries; developmental delay may not be apparent for a year or more. California addressed that in Young v. Haines (1986), where the state Supreme Court held that §340.5 — not Civil Code §29's six-year birth-injury provision — governs these claims, and that the statute's discovery-rule sentences apply to minors as well. A birth injury diagnosed late can therefore survive the three-year bar. Practical sequence if you are considering a claim: Check your own state's statute rather than assuming California's or Texas's rule applies — the deadline structure for minors varies, and in Texas the 120-day expert report clock starts running on the defendant's answer, not on your injury.
- Request the complete obstetric, delivery, and neonatal records, including raw fetal monitoring strips
- Locate the cord arterial pH, base deficit, and 1- and 5-minute Apgar scores
- Confirm your state's certificate or affidavit of merit requirement and its deadline
- Confirm your child's filing deadline under your state's minor-specific rule
- Consult a malpractice attorney who retains obstetric and neonatology experts, well before the deadline
Frequently Asked Questions
Does a difficult or traumatic delivery by itself support a lawsuit?
No. The standard is whether a reasonably competent obstetrician with similar training would have acted differently in the same circumstances, not whether the delivery was traumatic or the outcome poor.
Can I bring a birth injury claim without a medical expert?
Not realistically. Expert testimony from a physician in the field is required to establish both the standard of care and causation, and 29 states additionally require a merit filing before the case can proceed.
What if my child's cerebral palsy was diagnosed years after birth?
Late diagnosis does not automatically bar a claim. In California, Young v. Haines held that the discovery-rule provisions of §340.5 apply to minors, so a late-diagnosed injury can survive the three-year limit.
Why does the defense focus on the Apgar score?
Because the ACOG/AAP report states that a 5-minute Apgar of 7 or higher makes it unlikely that peripartum hypoxia-ischemia was a major cause of neonatal encephalopathy — a benchmark the defense can cite from your own medical record.