Wrong-site surgery is classified as a "never event" — a serious, preventable medical error. This page provides educational background on what it is, how often it occurs, and what patients should know.
The term "never event" was introduced by the National Quality Forum (NQF) to describe serious, largely preventable patient safety events that should never occur in a well-functioning healthcare system. Wrong-site surgery is among the most recognized never events.
Examples of surgical never events include:
These terms are often used interchangeably but have distinct meanings:
Surgery performed on the correct body part but on the incorrect side of the body — for example, operating on the left knee when the right knee required surgery.
Surgery performed at an incorrect anatomical location — for example, operating at the wrong spinal level during back surgery.
A procedure performed that was not the one consented to or intended — for example, performing a knee replacement when only a minor procedure was scheduled.
A surgical procedure performed on a different patient than the one for whom it was intended — often due to patient identification failures.
The following figures are derived from publicly available medical studies and government reports. They are estimates and may not reflect the most current data.
Estimated wrong-site surgeries reported in the United States per week, based on available safety data.
Estimated incidence rate across all surgical specialties. Exact figures vary by study and reporting methodology.
Reported average settlement figure from published research. Actual outcomes vary greatly depending on case specifics.
Under-reporting is believed to be significant. Many wrong-site events may go unreported or are settled privately, meaning true prevalence is likely higher than official figures suggest.
Based on published research and voluntary reporting databases, wrong-site surgeries appear most frequently in the following specialties (approximate figures):
The most commonly reported specialty, including knee, hip, and extremity procedures.
Particularly spinal surgery, where operating at the wrong vertebral level is a documented risk.
Errors involving paired organs such as kidneys represent a known risk category.
Including general surgery, thoracic, vascular, and others. No specialty is immune.
Figures are approximate estimates from published research. Sources include voluntary reporting systems which may reflect under-reporting.
Wrong-site surgery most commonly results from failures in the pre-operative verification process — such as incorrect site marking, inadequate patient identification checks, or breakdowns in the surgical team's time-out protocol. The Joint Commission's Universal Protocol was established to prevent these errors.
Yes. Standardized protocols such as surgical site marking, pre-operative checklists, and mandatory team "time-outs" before incision are designed to prevent these errors. When hospitals fail to follow these protocols, they may bear responsibility for resulting harm.
First, address your immediate medical needs. Then collect all relevant medical records and documentation. Consult a licensed medical malpractice attorney in your state — not this website — for advice specific to your situation. Time limits (statutes of limitations) apply.
No. WrongStitches.com is an independent educational resource. We are not affiliated with any law firm, hospital, or government agency. Nothing on this site is legal or medical advice. We may connect you with licensed attorneys, but we do not represent you.