California medical malpractice laws combine short filing deadlines, a mandatory 90-day pre-suit notice, expert testimony requirements, and a cap on non-economic damages set by the Medical Injury Compensation Reform Act (MICRA). For 2026, that cap is $470,000 in injury cases and $650,000 in wrongful death cases, and it rises each year. Economic damages such as medical bills and lost wages are not capped. Missing a deadline or skipping the pre-suit notice can end a claim before it starts, so the rules below matter as much as the underlying negligence.
What You Have to Prove
Every California malpractice case turns on four elements: the provider owed you a duty of care, breached that duty, the breach was a substantial factor in causing your injury, and you suffered actual damages. Falling short on any one ends the case.
The duty exists whenever a provider-patient relationship is established. Breach is measured against what a reasonably competent professional in the same specialty would have done under similar circumstances. A cardiologist is judged against other cardiologists, not against a family physician. A bad outcome is not enough. The provider must have done something, or failed to do something, that a competent peer would not have done.
Actual harm is required. Even careless conduct produces no claim without a demonstrable injury, whether physical, emotional, or financial. A misdiagnosis caught before any harm resulted will not support a malpractice case.
Informed Consent
A separate basis for liability is failure to obtain informed consent. A physician must explain the proposed treatment in terms you can understand, disclose risks a reasonable person would consider significant in deciding whether to proceed, and reveal any personal interests, financial or research-related, that could influence the physician’s judgment.1Justia. CACI No. 532 Informed Consent – Definition Minor, unlikely risks do not have to be disclosed.
The test is objective: would a reasonable person in the patient’s position have refused the procedure if properly informed? You do not have to prove you personally would have declined, only that a prudent person with full information would have made a different choice. The California Supreme Court set this standard in Cobbs v. Grant to prevent hindsight bias from driving these claims.
Causation
Causation is where most malpractice claims fall apart. California uses the “substantial factor” test, adopted by the Supreme Court in Mitchell v. Gonzales to replace the older “but for” standard.2Justia Law. Mitchell v Gonzales (1991) – Supreme Court of California Decisions You do not have to prove negligence was the only cause of your injury, but you do have to show it was a meaningful contributing factor. That distinction matters in cases involving pre-existing conditions or multiple treating providers.
The plaintiff carries the burden by a preponderance of the evidence, meaning it is more likely than not that the provider’s negligence caused the injury.3Justia. CACI No. 200 Obligation to Prove – More Likely True Than Not True
In narrow situations the burden can shift under res ipsa loquitur, where the injury is the kind that ordinarily does not happen without negligence, the instrumentality was under the defendant’s control, and the plaintiff did not contribute to the injury.4Justia. CACI No. 518 Medical Malpractice – Res Ipsa Loquitur The classic example is a surgical instrument left inside a patient.
Deadlines for Filing
California imposes two overlapping time limits. You must file within one year of discovering (or reasonably should have discovered) both the injury and its negligent cause, or within three years of the date the injury actually occurred, whichever hits first.5California Legislative Information. California Code CCP 340.5 Miss either window and the court will almost certainly dismiss the case.
Three narrow exceptions can extend the three-year outer limit: fraud by the provider, intentional concealment of the malpractice, or a foreign object left in the body that serves no therapeutic purpose.5California Legislative Information. California Code CCP 340.5 A surgical sponge qualifies. A pin or stent placed on purpose does not.
Claims Involving Children
Different deadlines apply to minors. A claim on behalf of a child generally must be filed within three years of the negligent act. For children under six, the deadline extends to three years from the injury or the child’s eighth birthday, whichever gives more time.5California Legislative Information. California Code CCP 340.5
The 90-Day Pre-Suit Notice
Before filing, you must send written notice to the healthcare provider at least 90 days in advance, describing the legal basis of the claim and the type of harm suffered.6California Legislative Information. California Code CCP 364 The notice period exists to encourage settlement discussions. If the statute of limitations would otherwise expire during the 90-day window, the filing deadline is extended by 90 days so the notice requirement does not effectively kill the claim. Skip the notice and dismissal is a real risk.
Damages You Can Recover
A successful claim can recover economic and non-economic damages. Only the non-economic side is capped.
Economic Damages
Economic damages cover measurable financial losses: past and future medical bills, lost wages, reduced earning capacity, rehabilitation costs, and any other out-of-pocket expense directly caused by the malpractice. There is no statutory cap. In cases involving permanent disability or lifelong care, this component often dwarfs the non-economic award.
Non-Economic Damages Under MICRA
Non-economic damages compensate for pain, suffering, physical impairment, disfigurement, and diminished quality of life. MICRA caps these amounts, and the caps have been rising each year since January 1, 2023, when California overhauled the long-standing $250,000 limit. For 2026 the cap is $470,000 in injury cases and $650,000 in wrongful death cases.7California Legislative Information. California Civil Code 3333.2 The injury cap increases by $40,000 a year and the wrongful death cap by $50,000 a year until they reach $750,000 and $1 million respectively in 2033. After that, both caps adjust upward by 2 percent annually for inflation. The original $250,000 cap still applies to any case filed before January 1, 2023.
One point that catches people off guard: MICRA applies separate caps to healthcare providers and healthcare institutions.7California Legislative Information. California Civil Code 3333.2 If your case involves both a negligent surgeon and a negligent hospital, each group has its own cap, which can meaningfully increase total non-economic recovery in multi-defendant cases.
Periodic Payments of Future Damages
When future damages equal or exceed $50,000, either party can ask the court to order those damages paid in installments rather than a lump sum.8California Legislative Information. California Code CCP 667.7 Future damages include projected medical treatment, lost future earnings, and future pain and suffering. Defendants and insurers often prefer periodic payments; plaintiffs typically prefer lump sums. If the court orders installments, the debtor must post security guaranteeing the payments.
Attorney Fee Caps
MICRA also limits what your attorney can charge on contingency in a malpractice case:
- 25 percent of the net recovery if the case settles before a lawsuit or arbitration demand is filed.
- 33 percent of the net recovery if the case settles, goes to arbitration, or reaches a verdict after a lawsuit is filed.
Net recovery is the amount remaining after litigation costs. The plaintiff’s own medical expenses and the attorney’s general overhead cannot be subtracted to shrink the base on which the fee is calculated. In cases that go to trial, an attorney may ask the court to approve a higher fee for good cause. The caps apply whether the plaintiff is an adult, a minor, or a person with a legal guardian.9California Legislative Information. California Business and Professions Code 6146
Who Can Be Held Liable
Liability is not limited to the doctor who made the mistake. Claims can be brought against individual providers (physicians, nurses, anesthesiologists, chiropractors, pharmacists), healthcare institutions, and in some cases medical device manufacturers under product liability theories.
Hospitals face two distinct forms of liability. Under vicarious liability, a hospital is responsible for malpractice by its employees acting within the scope of their work. Under the corporate negligence doctrine recognized in Elam v. College Park Hospital, a hospital can be directly liable for systemic failures in how it screens, supervises, or credentials medical staff, even for physicians who are not hospital employees.10Justia Law. Elam v College Park Hospital (1982) A hospital that knows or should know about a physician’s history of malpractice and does not restrict privileges can be independently negligent. Pharmacists can be liable for dispensing incorrect medication or failing to flag dangerous drug interactions.
Expert Testimony Is Almost Always Required
Malpractice cases in California almost always require expert testimony. A medical expert must explain what the standard of care required, how the defendant fell short, and how that failure caused the injury. Without this testimony, the case will not survive summary judgment.
Under California Evidence Code section 801, expert testimony must be based on the kind of information professionals in the field reasonably rely on when forming opinions, and the expert must stay within their area of competence.11California Legislative Information. California Evidence Code 801 An internist generally cannot opine on whether a neurosurgeon met the standard during brain surgery. Trial judges also serve as gatekeepers and can exclude speculative or poorly supported opinions under Sargon Enterprises v. University of Southern California.12Justia Law. Sargon Enters Inc v Univ of S Cal
The narrow exception is the common knowledge doctrine. When the negligence is so obvious that any layperson can recognize it, no expert is needed. Operating on the wrong limb or leaving a sponge inside a patient is the type of situation this covers. These cases are rare, and relying on the exception without legal advice is risky.
Comparative Fault
California follows pure comparative negligence, so a plaintiff’s own fault reduces the award but never eliminates it.13Justia Law. Li v Yellow Cab Co A jury finding you 20 percent responsible reduces your recovery by 20 percent; even a plaintiff found 90 percent at fault recovers 10 percent. In malpractice cases, comparative fault arises when a patient ignores discharge instructions, skips prescribed medication, or conceals relevant history. Documentation of your own compliance with the treatment plan can matter.
How Settlements Are Taxed
Tax treatment depends on what the money compensates. Damages received for physical injuries or physical sickness are generally excluded from federal gross income, including the lost wages component of that physical injury award.14Internal Revenue Service. Tax Implications of Settlements and Judgments The exclusion applies to both lump-sum and periodic payments.
Punitive damages are always taxable, regardless of the underlying injury.14Internal Revenue Service. Tax Implications of Settlements and Judgments Compensation for emotional distress is taxable unless the distress stems directly from a physical injury. If part of a settlement is allocated to emotional distress not tied to physical harm, only the portion reimbursing actual medical expenses for treating the distress can be excluded. Because how the settlement agreement allocates money across these categories drives the tax result, the wording should be negotiated with that in mind.