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20% deficit is a serious injury
5102(d) issues

20% deficit is a serious injury

By Jason Tenenbaum 2 min read

Why Trust This Analysis

This article is part of our ongoing 5102(d) issues coverage, with 89 published articles analyzing 5102(d) issues 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.

Understanding New York’s Serious Injury Threshold in Personal Injury Cases

In New York’s no-fault insurance system, accident victims must demonstrate they sustained a “serious injury” to pursue a lawsuit against the at-fault driver for pain and suffering damages. This threshold requirement, codified under Insurance Law § 5102(d), often becomes the battleground where cases are won or lost. The definition of serious injury includes various categories, but proving you meet the threshold can be challenging without proper medical documentation.

One crucial category within the serious injury threshold involves demonstrating a significant limitation of use of a body function or system. Medical professionals typically measure this through range of motion testing, comparing a patient’s current mobility to normal standards. Personal injury attorneys frequently rely on these objective measurements to establish their clients meet the statutory requirements.

The question of what percentage of limitation constitutes “significant” has been litigated extensively. While some defendants argue that only substantial deficits qualify, courts have recognized that even seemingly modest percentage losses can represent serious impairments, particularly when they affect daily activities and quality of life.

Jason Tenenbaum’s Analysis:

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Kholdarov v Hyman, 2018 NY Slip Op 07111 (2d Dept. 2018)

“In opposition, the plaintiff submitted the affirmed report of a neurologist who examined the plaintiff on March 16, 2016. The neurologist measured the range of motion of the cervical region of the plaintiff’s spine and compared his results to what would be considered normal range of motion. The neurologist found a 20 percent deficit in the flexion of the plaintiff’s cervical spine, but otherwise found the results to be normal”

Key Takeaway

This case demonstrates that a 20% deficit in cervical spine flexion can satisfy New York’s serious injury threshold. The court’s acceptance of this relatively modest percentage deficit reinforces that plaintiffs don’t need catastrophic limitations to meet the statutory requirements. Objective medical evidence showing measurable deficits in range of motion remains crucial for overcoming summary judgment motions, as hospital records and medical documentation can make or break a case.


Legal Update (February 2026): Since this post’s 2018 publication, New York courts have continued to develop jurisprudence regarding serious injury thresholds under Insurance Law § 5102(d), particularly concerning what percentage limitations constitute “significant” impairment. Practitioners should verify current case law interpretations and any potential legislative or regulatory modifications to the serious injury threshold requirements that may have occurred in the intervening years.

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.

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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 5102(d) issues 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: 5102(d) issues
Jason Tenenbaum, Personal Injury Attorney serving Long Island, Nassau County and Suffolk County

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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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