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This is what Perl spoke up against
Causation

Delayed Medical Treatment and Causation in New York Serious Injury Cases: The Perl Problem

By Jason Tenenbaum 2 min read

Key Takeaway

Lee v Rodriguez: missing admissible early treatment evidence, later examinations, and Perl's distinction between causation and motion measurements.

This article is part of our ongoing causation coverage, with 51 published articles analyzing causation issues across New York State. Attorney Jason Tenenbaum brings 24+ years of hands-on experience to this analysis, drawing from his work on more than 1,000 appeals, over 100,000 no-fault cases, and recovery of over $100 million for clients throughout Nassau County, Suffolk County, Queens, Brooklyn, Manhattan, and the Bronx. For personalized legal advice about how these principles apply to your specific situation, contact our Long Island office at (516) 750-0595 for a free consultation.

Lee v Rodriguez was not simply a case about waiting too long to see a doctor. The plaintiffs lacked admissible early treatment records to support their claimed causal connection.

Last reviewed: September 2026.

Legal Update (September 2026): Laws of 2026, chapter 58, Part EE sections 1 and 4 removed the 90/180-day serious-injury category for actions and proceedings commenced on or after May 26, 2026; the ruling below applied the earlier statute.

What was missing from the opposition

In Lee v Rodriguez, 150 AD3d 481 (1st Dept 2017), decided May 11, 2017, the First Department affirmed dismissal. Defense specialists found normal motion on recent examinations. The defense also showed that the plaintiffs had not reported injury to police immediately or sought medical treatment shortly after the accident.

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The plaintiffs’ only admissible submissions were reports from an examination some three years later. That doctor recited another doctor’s supposed early findings and referred to MRI reports absent from the record. The court treated those passages as hearsay and found no records, charts or bills supporting the claimed early treatment.

Lee sets no fixed deadline for seeking treatment. Its result depended on the evidence actually submitted.

Early observation versus early measurement

Perl v Meher, 18 NY3d 208 (2011) rejected a requirement for contemporaneous numerical motion measurements. It also explained the importance of early medical observations to causation.

Lee cited Perl; it did not overrule it. The distinction is between delayed numerical measurement and a record that fails to support the claimed early treatment at all. Under CPLR 3212(b), counsel must address both the medical reasoning and the admissibility of the evidence offered to support it. The decision is not a reason to seek medically unnecessary care for litigation.

Jason’s original comment

Jason’s original 2017 reaction follows. Lee’s holding should be read with its evidentiary record and Perl’s distinction explained above.

I cannot say much more.

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See the pre-existing injury and causation encyclopedia hub for the topic’s case directory and statutory update.

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Legal Context

Why This Matters for Your Case

New York law is among the most complex and nuanced in the country, with distinct procedural rules, substantive doctrines, and court systems that differ significantly from other jurisdictions. The Civil Practice Law and Rules (CPLR) governs every stage of civil litigation, from service of process through trial and appeal. The Appellate Division, Appellate Term, and Court of Appeals create a rich and ever-evolving body of case law that practitioners must follow.

Attorney Jason Tenenbaum has practiced across these areas for over 24 years, writing more than 1,000 appellate briefs and publishing over 2,353 legal articles that attorneys and clients rely on for guidance. The analysis in this article reflects real courtroom experience — from motion practice in Civil Court and Supreme Court to oral arguments before the Appellate Division — and a deep understanding of how New York courts actually apply the law in practice.

About This Topic

Causation in New York Personal Injury & No-Fault Law

Causation — proving that the defendant's negligence or the accident caused the plaintiff's injuries — is an essential element of every personal injury and no-fault claim. New York courts distinguish between proximate cause, intervening causes, and pre-existing conditions that may have been aggravated by an accident. The legal standards for establishing causation through medical evidence and the defenses available to challenge causal connection are analyzed in depth across these articles.

51 published articles in Causation

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Disclaimer: This article is published by the Law Office of Jason Tenenbaum, P.C. for informational and educational purposes only. It does not constitute legal advice, and no attorney-client relationship is formed by reading this content. The legal principles discussed may not apply to your specific situation, and the law may have changed since this article was last updated.

New York law varies by jurisdiction — court decisions in one Appellate Division department may not be followed in another, and local court rules in Nassau County Supreme Court differ from those in Suffolk County Supreme Court, Kings County Civil Court, or Queens County Supreme Court. The Appellate Division, Second Department (which covers Long Island, Brooklyn, Queens, and Staten Island) and the Appellate Term (which hears appeals from lower courts) each have distinct procedural requirements and precedents that affect litigation strategy.

If you need legal help with a causation matter, contact our office at (516) 750-0595 for a free consultation. We serve clients throughout Long Island (Huntington, Babylon, Islip, Brookhaven, Smithtown, Riverhead, Southampton, East Hampton), Nassau County (Hempstead, Garden City, Mineola, Great Neck, Manhasset, Freeport, Long Beach, Rockville Centre, Valley Stream, Westbury, Hicksville, Massapequa), Suffolk County (Hauppauge, Deer Park, Bay Shore, Central Islip, Patchogue, Brentwood), Queens, Brooklyn, Manhattan, the Bronx, Staten Island, and Westchester County. Prior results do not guarantee a similar outcome.

Filed under: Causation
Jason Tenenbaum, Personal Injury Attorney serving Long Island, Nassau County and Suffolk County

Reviewed & Verified By

Jason Tenenbaum, Esq.

Jason Tenenbaum is a personal injury attorney serving Long Island, Nassau & Suffolk Counties, and New York City. Admitted to practice in NY, NJ, FL, TX, GA, MI, and Federal courts, Jason is one of the few attorneys who writes his own appeals and tries his own cases. Since 2002, he has authored over 2,353 articles on no-fault insurance law, personal injury, and employment law — a resource other attorneys rely on to stay current on New York appellate decisions.

Education
Syracuse University College of Law
Experience
24+ Years
Articles
2,353+ Published
Licensed In
7 States + Federal

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