Key Takeaway
New York court grants severance in no-fault insurance case, separating 198 unrelated claims. Analysis of litigation strategy and costs in High Definition MRI v Mapfre Insurance.
This article is part of our ongoing severence coverage, with 9 published articles analyzing severence 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.
In New York no-fault insurance litigation, healthcare providers frequently consolidate multiple unrelated claims against a single insurance carrier into one lawsuit. This practice, while procedurally efficient for the plaintiff, creates significant joinder and severance issues that implicate fundamental principles of civil procedure. CPLR 603 governs the severance of claims and parties, authorizing courts to order separate trials or sever claims when justice requires.
The standards for severance in no-fault cases have been well-established through decades of Appellate Division jurisprudence. Courts examine whether the consolidated claims share common questions of law or fact sufficient to justify joint adjudication. When claims involve different assignors, different dates of service, different medical treatments, and different factual circumstances, they generally lack the commonality necessary for joinder. The mere fact that all claims are asserted against the same defendant insurance carrier does not create sufficient commonality.
Severance motions present strategic considerations for both parties. Insurance carriers seek severance to transform what appears to be a significant commercial litigation into multiple small-dollar collection actions. This strategy aims to discourage plaintiff’s counsel by increasing the time and expense required to prosecute each claim individually. Conversely, healthcare providers consolidate claims to achieve economies of scale, present a more substantial case to the court, and maintain leverage in potential settlement negotiations.
Case Background
High Definition MRI, P.C. v Mapfre Ins. Co. of N.Y., 2017 NY Slip Op 01800 (1st Dept. 2017) exemplifies the financial and strategic consequences of successful severance motions. High Definition MRI consolidated 198 separate no-fault claims into a single breach of contract action against Mapfre Insurance Company. The consolidated complaint sought to recover for unpaid medical services rendered to different patients on different dates spanning an extended time period.
Mapfre moved to sever the claims, arguing that each represented a distinct cause of action involving different assignors, different medical services, different denial letters, and different factual circumstances. The insurance carrier contended that no common issues of law or fact predominated across the 198 claims. High Definition MRI opposed severance, arguing that Mapfre’s anticipated defense of fraudulent incorporation created a common issue that affected all claims and justified consolidated adjudication.
The trial court granted Mapfre’s severance motion, and High Definition MRI appealed to the First Department seeking reversal of the severance order.
Jason Tenenbaum’s Analysis
“The court properly severed the breach of contract cause of action, since the 198 unrelated no-fault claims asserted therein raise no common issues of fact or law (see CPLR 603; Radiology Resource Network, P.C., v Fireman’s Fund Ins. Co., 12 AD3d 185 ). Plaintiff’s contention that the defense of fraudulent incorporation presents common factual and legal issues that predominate is unavailing, since defendant has made clear that it does not intend to pursue that defense”
So two things are going to happen here. First, Plaintiff walks away because they thought this would be a commercial action as opposed to a no-fault collection action and their shoes are too “white” to get sullied by a collections action. Second, Mapfre gets slaughtered in interest (let alone legal fees from their counsel) because cases in Civil New York go nowhere very slowly. By time these cases are final for trial and there is a judge ready to hear the cases, the interest factor will be at 300%. Add in hourly attorneys fees and who is the winner here? The expression is so true: Win the battle, lose the ____?
Legal Significance
The First Department’s decision reinforces the principle that healthcare providers cannot manufacture commonality through strategic pleading. The court’s rejection of the fraudulent incorporation argument is particularly instructive. Even when a defendant initially asserts a defense that would apply uniformly to all consolidated claims, if the defendant subsequently abandons that defense, it cannot serve as a basis for denying severance.
This holding places the burden on plaintiffs to identify genuine common issues at the time of the severance motion, not merely potential defenses that the defendant might raise. The decision also suggests that courts will scrutinize defendants’ litigation positions to determine whether claimed defenses are genuinely in play or merely hypothetical.
The case further clarifies that claims against the same insurance carrier, standing alone, do not satisfy CPLR 603’s commonality requirement. Each no-fault claim arises from a distinct contractual relationship between the insurer and a specific assignor, involves discrete medical services, and presents individualized questions about medical necessity, causation, and the validity of specific denials. These individualized issues predominate over any common questions about the defendant’s general claims handling practices.
Practical Implications
For insurance carriers defending consolidated no-fault actions, High Definition MRI provides a clear framework for seeking severance. Carriers should identify the distinct factual and legal issues presented by each claim, emphasize the lack of common proof, and clarify which defenses will actually be pursued at trial. Courts are particularly receptive to severance motions when the consolidated action includes dozens or hundreds of unrelated claims.
For healthcare providers, the decision illustrates the risks of over-consolidation. While joining multiple claims in a single action offers procedural efficiency, it exposes the provider to severance motions that can fundamentally alter the litigation landscape. Providers must carefully assess whether the claims truly share sufficient commonality to withstand severance scrutiny.
The decision also highlights the economic realities underlying no-fault litigation strategy. As counsel correctly observes, severed small-dollar claims in New York Civil Court can languish for years due to calendar congestion. During this period, statutory interest continues to accrue at nine percent per annum under CPLR 5004. While this benefits the ultimately successful plaintiff, it also means that the defendant carrier incurs substantial additional exposure, including both mounting interest obligations and ongoing legal fees for defending multiple severed actions. Neither party truly “wins” when litigation extends for years over relatively modest principal amounts.
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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.
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Nov 28, 2015Common Questions
Frequently Asked Questions
What is severance in New York civil litigation?
Severance under CPLR 603 separates claims or parties into independent actions for trial. Courts may order severance when claims involve different factual or legal issues that would confuse the jury, or when trying them together would be prejudicial to one party.
When will a court grant a motion to sever claims?
Courts consider whether the claims share common questions of law or fact, whether severance would promote judicial efficiency, and whether joinder would prejudice any party. In personal injury cases, severance of liability and damages trials is common.
What is the difference between severance and bifurcation?
Severance creates separate independent actions, while bifurcation splits a single action into separate trials (typically liability and damages). Bifurcation under CPLR 603 keeps the case as one action but tries issues separately, which is common in personal injury cases on Long Island.
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About the Author
Jason Tenenbaum, Esq.
Jason Tenenbaum is the founding attorney of the Law Office of Jason Tenenbaum, P.C., headquartered at 326 Walt Whitman Road, Suite C, Huntington Station, New York 11746. With over 24 years of experience since founding the firm in 2002, Jason has written more than 1,000 appeals, handled over 100,000 no-fault insurance cases, and recovered over $100 million for clients across Long Island, Nassau County, Suffolk County, Queens, Brooklyn, Manhattan, the Bronx, and Staten Island. He is one of the few attorneys in the state who both writes his own appellate briefs and tries his own cases.
Jason is admitted to practice in New York, New Jersey, Florida, Texas, Georgia, and Michigan state courts, as well as multiple federal courts. His 2,353+ published legal articles analyzing New York case law, procedural developments, and litigation strategy make him one of the most prolific legal commentators in the state. He earned his Juris Doctor from Syracuse University College of Law.
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.
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