Kramer, Dillof, Livingston & Moore (KDLM) represents New York patients and families when a delayed diagnosis may have reduced the chance of a better outcome. New York law can let a jury consider a substantial lost chance, especially in delayed cancer cases. Deadlines are often 2½ years, with Lavern’s Law for many cancer claims. Call (212) 618-6800.

Chest X-ray illustrating a delayed cancer diagnosis and the loss of chance doctrine in New York

What is the loss of chance doctrine in New York?

In a traditional medical malpractice case, a plaintiff must show that a provider’s departure from accepted practice was a substantial factor in causing injury. Cancer and other timing-sensitive cases often present a harder causation picture: the disease may already be present, and the alleged harm is that an avoidable delay made the outcome worse or reduced the odds of a better result.

New York appellate decisions have for decades allowed juries to evaluate whether a delay deprived the patient of a substantial possibility of a better outcome. Early discussion appears in Kallenberg v. Beth Israel Hospital, 45 A.D.2d 177 (1st Dep’t 1974), aff’d 37 N.Y.2d 719 (1975). Later First Department analysis in Mortensen v. Memorial Hospital, 105 A.D.2d 151 (1st Dep’t 1984), treated “substantial factor” and “substantial possibility of avoiding the injury” as closely related concepts in this setting.

How does loss of chance apply to a delayed cancer diagnosis?

When imaging or pathology that should have prompted earlier follow-up is missed, and the cancer is later found at a more advanced stage, plaintiffs often argue that the delay reduced the chance of cure, longer survival, or less invasive treatment. New York cases frequently turn on competing expert opinions about how the disease progresses and what earlier detection would have meant. See, for example, Wager v. Rao, 178 A.D.3d 434 (1st Dep’t 2019), and Polanco v. Reed, 105 A.D.3d 438 (1st Dep’t 2013). Those decisions address whether summary judgment on causation was proper on their own records; they are not predictions about any other case.

What do New York courts mean by a substantial possibility?

The Court of Appeals in Wild v. Catholic Health System, 21 N.Y.3d 951 (2013), reviewed a jury charge that asked whether the defendants’ conduct deprived the patient of a substantial possibility of avoiding a worse outcome. The Court held that a broad challenge to the viability of loss-of-chance theory was unpreserved in that appeal, and it did not find that the charge improperly reduced the plaintiff’s burden when read together with the standard substantial-factor instruction.

Practical takeaway: New York law in this area focuses on whether the chance lost was substantial (more than slight), not on a rigid requirement that the lost chance exceed 50 percent. How a particular Appellate Division department has applied that language can vary, so early attorney review of the medical timeline matters.

What is the statute of limitations for these claims in New York?

Under CPLR 214-a, an action for medical, dental, or podiatric malpractice must generally be commenced within two years and six months of the act, omission, or failure complained of, or of the last treatment where there is continuous treatment for the same illness, injury, or condition.

For alleged negligent failure to diagnose cancer or a malignant tumor, Lavern’s Law (CPLR 214-a(b)) allows commencement within two years and six months of when the person knows or reasonably should have known of the alleged negligence and that it caused injury, generally capped at seven years from the alleged negligent act or omission, with additional continuous-treatment language in the statute. Lavern’s Law took effect January 31, 2018. Courts have limited retroactive discovery tolling; those limits are fact-specific. Official text: CPLR 214-a.

Public hospitals and other governmental defendants can trigger shorter notice-of-claim deadlines that are not covered in depth here. See also KDLM’s failure-to-diagnose practice page and, when published, the companion notice-of-claim explainer.

How are loss of chance damages approached in New York?

New York malpractice verdicts are generally itemized under CPLR 4111 categories such as medical expenses, lost earnings, and pain and suffering (past and future). A reduced chance of a better outcome is typically argued as part of those categories rather than as a separately labeled line on the verdict sheet. This article does not assign percentages or dollar figures to any hypothetical patient.

What should you do if you suspect a delayed cancer diagnosis in New York?

  1. Gather office notes, imaging, labs, pathology, and referral records tied to the symptoms and findings at issue.
  2. Build a dated timeline of visits, tests, results, and communications.
  3. Speak with a qualified New York medical malpractice attorney promptly. Filing and notice deadlines can run while treatment continues.
  4. Do not rely on a blog for your deadline. Only counsel reviewing your records can apply CPLR 214-a and related rules to your facts.

KDLM’s failure-to-diagnose and medical malpractice pages describe how the firm handles these investigations. Published firm results, including verdicts listed on Landmark Verdicts, should be reviewed with counsel; past results do not predict the outcome of another case.

How is a loss-of-chance medical malpractice claim evaluated in New York?

A medical malpractice claim based on loss of chance still has to show a departure from accepted practice. The plaintiff offers expert proof that a provider was negligent, and the defendant usually answers with a competing expert. The dispute is often about causation: whether the delay was a substantial factor in reducing the chance of a better result, not whether a later personal injury would have been avoided in every respect.

Counsel looks at the same records used in other New York medical malpractice cases: office notes, imaging, pathology, and the timeline of follow-up. Families can call (212) 618-6800 for help evaluating whether the facts support a claim.

For a free consultation about a possible New York delayed-diagnosis or loss-of-chance claim, call (212) 618-6800 or contact Kramer, Dillof, Livingston & Moore at 217 Broadway, 10th Floor, New York, NY 10007. For qualifying matters, there is no fee unless we win. This article is general information, not legal advice, and reading it does not create an attorney-client relationship.

What must I prove to bring a loss of chance medical malpractice claim in New York?

A plaintiff in a New York medical malpractice case still has to prove the ordinary elements of medical negligence. Those usually include a duty of care owed by the hospital or other healthcare providers, a departure from the accepted standard of care, and a causal link between that departure and the harm suffered. In loss-of-chance cases, proving causation often focuses on whether the delay was a substantial factor in reducing a better outcome, including questions of proximate cause.

Expert testimony is typically required. The plaintiff must prove the claim by a preponderance of the evidence. The defendant is free to offer a competing expert. A New York injury lawyer or personal injury lawyer who handles these files will usually start with the complete chart, not with a blog post.

How do causation and damages affect a New York medical malpractice claim?

If liability is established, recoverable damages in New York generally include medical expenses, lost earnings, and non-economic harms such as pain and suffering. When a delay reduces the chance of a better result, lawyers often address the cost of future care and, where the proof supports it, projected future needs. This article does not assign dollar figures or percentages to any hypothetical patient.

KDLM’s medical malpractice lawyers evaluate both the liability proof and the damages record. Call (212) 618-6800 if you want that review.

How does comparative fault affect recovery in a New York negligence case?

New York’s comparative-fault rule is statutory. Under CPLR 1411, a plaintiff’s recovery in negligence claims can be reduced by that person’s share of fault; it is not automatically barred. How that rule applies in a delayed-diagnosis or other New York negligence law dispute depends on the facts. Official text: CPLR 1411.

Loss of chance in New York: FAQ

Does loss of chance apply only to cancer?

No. Courts discuss the theory in other timing-sensitive settings, such as delayed treatment of acute conditions. Cancer cases are common examples because staging data can make changes in prognosis easier to explain to a jury.

Do I have to prove I would have been cured?

New York authority in this area focuses on whether a departure more likely than not caused a substantial loss of a better outcome. The chance lost need not be shown as greater than 50 percent, but it must be more than slight, and expert proof is usually required.

How does Lavern’s Law change cancer misdiagnosis deadlines in New York?

For negligent failure to diagnose cancer or a malignant tumor, CPLR 214-a(b) provides a discovery-based period of two years and six months after the patient knew or should have known of the negligence and resulting injury, subject to a seven-year outer limit from the alleged negligent act, with additional continuous-treatment language in the statute. Confirm which timeline applies with counsel.

Can a wrongful death case involve loss of chance issues?

Families sometimes pursue malpractice and wrongful death theories together when a patient dies. Applicable statutes of limitations and damages rules differ from pure injury claims. An attorney should evaluate both tracks on the specific facts.

How do I contact KDLM about a delayed diagnosis in New York?

Call (212) 618-6800 or contact Kramer, Dillof, Livingston & Moore at 217 Broadway, 10th Floor, New York, NY 10007 to schedule a free consultation.

Is medical negligence the same as a loss of chance claim?

Medical negligence is the broader category. A loss of chance theory is one way New York courts sometimes analyze causation when a delay reduced the chance of a better outcome. The plaintiff still has to prove a departure from the standard of care and a substantial lost chance, not merely a bad result.

What evidence can support a loss of chance malpractice claim?

The chart, imaging, pathology, and a dated timeline are usually the starting point. Expert opinion is typically needed to explain the standard of care, the probable course of the disease, and how the delay changed the outlook. Families should not discard records while they look for counsel.

Sources

  • CPLR 214-a official text: https://www.nysenate.gov/legislation/laws/CVP/214-A
  • Kallenberg v. Beth Israel Hosp., 45 A.D.2d 177 (1st Dep’t 1974), aff’d 37 N.Y.2d 719 (1975)
  • Mortensen v. Mem’l Hosp., 105 A.D.2d 151 (1st Dep’t 1984); Wild v. Catholic Health Sys., 21 N.Y.3d 951 (2013); Wager v. Rao, 178 A.D.3d 434 (1st Dep’t 2019); Polanco v. Reed, 105 A.D.3d 438 (1st Dep’t 2013)
  • Mula v. Sasson, 181 A.D.3d 600 (2d Dep’t 2020); Ford v. Lee, 203 A.D.3d 456 (1st Dep’t 2022) (Lavern’s Law retroactivity / revival limits)