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California Medical Malpractice Law

Medical Malpractice in California: What Counts as Negligence

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Posted: 26th September 2025
Lawyer Monthly
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Medical Malpractice in California: What Counts as Negligence

Medical malpractice, legally known as professional negligence, occurs when a healthcare provider's actions or inactions deviate from the established standard of care, resulting in injury or harm to a patient.

In California, pursuing a medical malpractice lawsuit is a rigorous process, requiring a deep understanding of the law and the specific elements of negligence. For anyone considering a claim, grasping the foundational legal requirements is crucial.

The Four Essential Elements of Negligence

To succeed in a medical malpractice claim in California, a patient (the plaintiff) must legally prove the presence of four distinct elements.

The absence of any one element will prevent the claim from moving forward.

The California Courts define negligence through their Civil Jury Instructions on Negligence (CACI 400), which outline duty, breach, causation, and damages.

  1. Duty of Care: A legal obligation must have existed. This is typically established the moment a doctor-patient relationship is formed, such as when a patient seeks treatment and the healthcare provider agrees to provide it. This duty requires the provider to treat the patient with the same level of competence and skill as a reasonably competent medical professional in the same field and geographic location.
  2. Breach of Duty (Negligence): This is the core of the negligence claim. It means the healthcare provider failed to meet the standard of care. This breach can be an action (like performing a surgical error) or an omission (like a delayed diagnosis).
  3. Causation: The plaintiff must prove that the breach of the standard of care directly and proximately caused the patient's injury. It is not enough that the provider was negligent and the patient was injured; the negligence must be the direct cause of the injury. For instance, if a patient has a bad outcome that would have occurred even with proper care, causation cannot be proven.
  4. Damages: The patient must have suffered actual, compensable injury or loss as a result of the negligence. This includes both economic damages (medical bills, lost wages) and non-economic damages (pain and suffering).

The Standard of Care: Proving the Breach

The standard of care is the benchmark against which a provider's conduct is measured.

It's defined as the skill, knowledge, and care ordinarily possessed and exercised by other members of the profession under similar circumstances.

See CACI No. 501 – Standard of Care for Health Care Professionals (Judicial Council of California Civil Jury Instructions).

In the vast majority of medical malpractice cases, the standard of care and its breach must be established through expert witness testimony.

Jurors and judges typically lack the medical knowledge necessary to determine what a reasonable physician, specialist, or nurse should have done.

A qualified medical expert, usually a professional with the same specialty and training as the defendant, is required to:

  1. Define the standard of care applicable to the specific situation.
  2. Opine that the defendant's actions or inactions fell below that standard.
  3. Testify that this failure was the direct cause of the patient’s injury.

This reliance on expert witness testimony makes these lawsuits particularly complex and expensive to pursue.

Only in cases where the negligence is obvious to a layperson (e.g., leaving a sponge inside a patient, a concept known as res ipsa loquitur or "the thing speaks for itself") can the requirement for an expert be waived, though this is rare.


Key Areas of Malpractice and Professional Negligence

The breach of duty can manifest in numerous ways across the healthcare spectrum:

1. Misdiagnosis and Delayed Diagnosis Claims

Misdiagnosis and Delayed Diagnosis Claims in California are among the most common professional negligence issues.

A misdiagnosis can lead to a patient receiving unnecessary, harmful treatment (like chemotherapy for a disease they don't have) or no treatment at all for the true illness.

A delayed diagnosis often allows a progressive condition, such as cancer or a stroke, to advance beyond the point where treatment would have been most effective, diminishing the patient's chance of a positive outcome.

2. Surgical Errors and Patient Rights

Surgical Errors represent a grave breach of the standard of care. Examples include operating on the wrong site, performing the wrong procedure, causing damage to nearby nerves or organs, or failing to manage post-operative complications.

When surgical errors occur, patient rights in California entitle the injured party to seek compensation for the resulting harm and the extensive corrective care often required.

The Medical Board of California oversees physician conduct and provides a formal process for patients to file complaints involving surgical negligence.

3. Medication and Pharmacy Error Lawsuits

Medication and Pharmacy Error Lawsuits in California involve negligence throughout the drug administration process.

This can include a doctor prescribing the wrong drug or dosage, a pharmacist filling the prescription incorrectly (e.g., mixing up names or dosages), or a nurse administering the wrong medication or failing to check for known allergies.

These errors can lead to serious injury, hospitalization, or wrongful death.

4. Birth Injury Lawsuits

Birth Injury Lawsuits in California center on negligence that occurs during prenatal care, labor, or delivery.

Common claims involve the negligent failure to recognize and respond to fetal distress, such as a lack of oxygen (hypoxia), or the improper use of delivery tools (like forceps or a vacuum extractor).

Such negligence can lead to severe, lifelong conditions like cerebral palsy or Erb's palsy.

5. Specialized Areas of Malpractice

  • Dental Malpractice Claims in California: Negligence extends to dentists, oral surgeons, and orthodontists. Claims can arise from improper tooth extractions, failure to diagnose serious oral disease (like cancer), or causing nerve damage during procedures.
  • Psychiatric Malpractice and Mental Health Provider Liability: Mental health professionals can be held liable for negligence, particularly in cases involving a failure to prevent suicide or self-harm, improper prescription of psychiatric medication, or breach of professional boundaries.
  • Nursing Home Abuse and Neglect in California: While some claims fall under elder abuse, instances of medical neglect—such as failure to prevent bedsores, failure to treat infections, or inadequate administration of medication—constitute a form of professional negligence against vulnerable residents.
  • Telemedicine Malpractice: Emerging Issues in California: As virtual care expands, so does the potential for negligence. Telemedicine Malpractice claims might involve misdiagnosis due to the limitations of a remote examination, technical failures that impede communication during a critical event, or a provider’s failure to know when a virtual consultation must be converted to an in-person referral.

MICRA and Damage Caps in California

A critical component of medical malpractice litigation in California is the Medical Injury Compensation Reform Act (MICRA).

This legislation, originally enacted in 1975, significantly impacts the amount of compensation a plaintiff can receive.

MICRA and Damage Caps in California Medical Malpractice Cases directly limits the recovery of non-economic damages.

These damages, intended to compensate for subjective losses like physical pain and suffering, emotional distress, and loss of enjoyment of life, were capped at $250,000 for nearly five decades.

However, the law was significantly updated in 2022. The new legislation provides for higher initial caps and annual incremental increases:

  • Non-Death Cases: The cap initially rose to $350,000 in 2023 and increases by $40,000 annually until it reaches $750,000.
  • Wrongful Death Cases: The cap initially rose to $500,000 in 2023 and increases by $50,000 annually until it reaches $1,000,000.

Crucially, the law also now allows for up to three separate caps in a single case, depending on the categories of defendants (e.g., one cap for a negligent physician, and a separate cap for a negligent hospital).

It is vital to remember that economic damages (past and future medical bills, lost earnings) are not capped under MICRA.


The Statute of Limitations: Time is Critical

California law enforces a strict timeline for filing medical malpractice lawsuits, known as the Statute of Limitations. Generally, a claim must be filed within the earlier of two deadlines:

  1. One year after the patient discovers (or should have reasonably discovered) the injury.
  2. Three years from the date the injury occurred, regardless of when it was discovered.

There are limited, complex exceptions to these deadlines, such as cases involving fraud, intentional concealment, or the presence of a foreign object left in the body.

Furthermore, California law requires a plaintiff to provide the healthcare provider with at least 90 days' written notice of the intent to file a lawsuit before the complaint is officially filed in court.

Missing these strict deadlines, particularly the one-year discovery rule, can permanently bar a valid claim.


What Victims of Medical Negligence Should Remember

Successfully navigating a medical malpractice claim in California requires proving that a healthcare provider’s actions constituted professional negligence by breaching the standard of care, and that this breach directly caused compensable injury.

From Birth Injury Lawsuits to the evolving landscape of Telemedicine Malpractice, the legal foundation remains the same: duty, breach, causation, and damages.

Understanding the limitations imposed by MICRA and Damage Caps and the strict deadlines of the Statute of Limitations are necessary first steps for any patient seeking justice and compensation for harm caused by negligent medical care.


People Also Ask (PAA)

What qualifies as medical malpractice in California?
Medical malpractice in California occurs when a healthcare provider breaches the accepted standard of care and directly causes harm to a patient. This includes errors such as misdiagnosis, surgical mistakes, medication errors, and failure to provide appropriate treatment.

What are the four elements of medical negligence in California?
The four elements are duty of care, breach of duty, causation, and damages. Without proving all four, a medical malpractice claim cannot succeed under California law.

What is the statute of limitations for medical malpractice in California?
A medical malpractice lawsuit must generally be filed within one year of discovering the injury, or within three years of when the injury occurred, whichever comes first. Exceptions apply in cases of fraud, concealment, or foreign objects left in the body.

Does California have damage caps for medical malpractice claims?
Yes. Under the Medical Injury Compensation Reform Act (MICRA), non-economic damages are capped. As of 2023, the cap starts at $350,000 for personal injury and $500,000 for wrongful death, with scheduled annual increases until 2033. Economic damages like medical bills and lost wages are not capped.

Can you sue a hospital directly for malpractice in California?
Yes. Patients may sue hospitals for negligence if the harm resulted from systemic failures, negligent hiring, improper supervision, or errors by employees such as nurses, technicians, or hospital-based physicians.

Do you need an expert witness in California medical malpractice cases?
In most cases, yes. Expert testimony is required to establish the applicable standard of care and explain how the provider’s conduct fell below it. Only rare cases of obvious negligence, such as leaving a surgical sponge inside a patient, may not require expert testimony.

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