By Milan Chatterjee | Founding Attorney, Milan Legal |
Nevada Requires Expert Evidence, With Five Narrow Exceptions
To prove medical negligence in Nevada, NRS 41A.100 requires evidence showing both that the provider deviated from the accepted standard of care and that the deviation caused the injury. Without that evidence, liability is not imposed, however bad the outcome was.
There are five specific circumstances where the statute presumes negligence instead. They are narrower than most people hope and broader than most people realise, and choosing to rely on them carries a trade-off that is easy to miss.
What the Statute Actually Accepts as Evidence
Most summaries say a medical malpractice case requires expert testimony. NRS 41A.100(1) is wider than that. It accepts three forms of evidence:
- Expert medical testimony
- Material from recognised medical texts or treatises
- The regulations of the licensed medical facility where the alleged negligence occurred
That third item is the one worth noticing. A hospital’s own written protocol, obtained through the records, can establish what the standard of care was in that facility. Where a provider departed from a procedure their own institution had in writing, the deviation is documented by the institution rather than argued by a hired expert.
Whichever route is used, it has to do two jobs: show the deviation, and prove causation. Deviation alone is not enough. Many cases fail on the second half rather than the first.
Who Counts as an Expert
Under NRS 41A.100(2), expert medical testimony may only be given by a provider of health care who practises, or has practised, in an area substantially similar to the type of practice engaged in at the time of the alleged negligence.
Substantially similar, not identical. But a general practitioner opining on a specialist surgical technique is the kind of mismatch that gets challenged, and the challenge usually comes early.
Causation Is Where Most Cases Are Decided
The provider departed from the standard. Everyone can see it. The question the defence then asks is whether the outcome would have been different if they had not, and that is a medical question with a medical answer that often runs against the patient. Establishing what a timely diagnosis or a correct procedure would actually have changed is the harder half of the case.
The Five Circumstances Where Negligence Is Presumed
NRS 41A.100(1) creates a rebuttable presumption that the injury or death was caused by negligence, with no expert evidence required, where it occurred in any of these circumstances:
- A foreign substance, other than medication or a prosthetic device, was unintentionally left inside the patient after surgery
- An explosion or fire originating in a substance used in treatment occurred during treatment
- An unintended burn caused by heat, radiation or chemicals was suffered
- An injury was suffered during treatment to a part of the body not directly involved in the treatment, or close to it
- A surgical procedure was performed on the wrong patient, or the wrong organ, limb or body part
The fourth is the one that reaches furthest. It is not limited to dramatic errors. An injury to an area the procedure had nothing to do with can fall inside it.
Rebuttable means the provider can still put on evidence to defeat the presumption. It shifts who has to explain, which is a substantial advantage, not an automatic win.
The Trade-Off Almost Nobody Mentions
NRS 41A.100(3) says the presumption does not apply in an action where the plaintiff submits an affidavit under NRS 41A.071, or otherwise designates an expert witness to establish that the specific provider deviated from the accepted standard of care.
The two routes are mutually exclusive. Bringing in an expert to strengthen a presumption case removes the presumption. A claimant whose facts fall squarely inside one of the five circumstances has a real decision to make about how the case is pleaded, and it is made at filing rather than later.
The Affidavit That Has to Accompany the Complaint
Separately from the evidence at trial, NRS 41A.071 requires a professional negligence complaint to be filed with a supporting affidavit from a medical expert. Without one, the court must dismiss.
The affidavit has to support the allegations, come from an expert practising or having practised in a substantially similar area, identify each provider alleged to be negligent by name or by conduct, and set out the specific acts of alleged negligence separately as to each defendant.
The dismissal is without prejudice, which sounds recoverable and often is not, because it does not restart the limitation period. Deadlines are covered separately in our guide to how long you have to file a medical malpractice claim in Nevada.
Three Provisions That Shape What a Claim Is Worth Pursuing
Each defendant answers for their own share. NRS 41A.045 abrogates joint and several liability in professional negligence actions. Defendants are severally liable, so a claimant cannot recover the whole award from whichever defendant is most able to pay.
A settlement conference is not optional. NRS 41A.081 requires specified persons to participate in a settlement conference, with consequences for failing to.
Non-economic damages are capped. NRS 41A.035 limits the award for non-economic damages. The figure has been amended and the statute itself provides for the Nevada Supreme Court to publish the current amount, so check the published figure rather than a number quoted in an older article.
What a Nevada Claim Really Turns On
Whether the records show a documented deviation, whether the facility’s own written protocol helps, whether the facts fall inside one of the five presumed circumstances, whether a substantially similar expert can be found, and whether causation can be established rather than assumed.
Milan Legal Perspective
Before founding Milan Legal, Milan Chatterjee served as Associate Compliance Counsel at Las Vegas Sands Corporation, a Fortune 500 hospitality company, advising senior leadership on compliance, governance and risk across global operations. A UCLA School of Law graduate admitted in Nevada (Bar No. 15159) and California, he was appointed to the Nevada Supreme Court Access to Justice Commission and serves as Founding President of the South Asian Bar Association of Las Vegas.
Milan Legal works with patients and families across Las Vegas, Clark County, Reno, Washoe County and the Lake Tahoe region.
Further Nevada Resources
The full chapter is available as NRS Chapter 41A, Actions for Professional Negligence on the Nevada Legislature website, including the definitions, the damages provisions and the settlement conference requirement.
Related reading on this site: How Long Do You Have to File a Medical Malpractice Claim in Nevada? and What Is Medical Malpractice in Nevada.
Frequently Asked Questions
Under NRS 41A.100(1), evidence showing both a deviation from the accepted standard of care and causation. That evidence can be expert medical testimony, material from recognised medical texts or treatises, or the regulations of the facility where the negligence is alleged to have occurred.
For the case itself, not always. Five circumstances under NRS 41A.100(1) raise a rebuttable presumption of negligence without expert evidence. A complaint still has to be filed with a supporting expert affidavit under NRS 41A.071.
Where a foreign substance other than medication or a prosthetic was left inside a patient after surgery; where an explosion or fire originated in a substance used in treatment; where an unintended burn from heat, radiation or chemicals occurred; where a body part not involved in or near the treatment was injured; or where surgery was performed on the wrong patient or the wrong body part.
Yes, and this surprises people. Under NRS 41A.100(3), the presumption does not apply where the plaintiff submits an affidavit under NRS 41A.071 or otherwise designates an expert to establish that the specific provider deviated from the standard. The two routes cannot be combined.
Under NRS 41A.100(2), a provider of health care who practises or has practised in an area substantially similar to the type of practice involved at the time of the alleged negligence.
Yes. NRS 41A.100(1) expressly accepts the regulations of the licensed medical facility where the alleged negligence occurred as evidence of the standard of care in that facility.
No. The statute requires a deviation from the accepted standard of care and proof that the deviation caused the injury. Complications can occur despite appropriate treatment, and causation is frequently the harder element.
Conclusion
Nevada frames medical negligence as an evidence problem rather than a fairness problem. The statute names what will count, who may give it, and the five situations where it is not needed at all.
Two points are worth carrying away. A facility’s own written protocol is admissible evidence of the standard of care and is sitting in the records. And the presumption route and the expert route are alternatives, not additions, so the decision about which to use is made when the case is filed rather than discovered afterwards.
Where to Start
Before anything else, get the records. The complete set for the treatment in question, including nursing notes and any applicable facility protocol. Whether a claim exists, and which route it would take, is almost always answerable from that file.
