Why “contemporaneous” medical inquiry should not be the loadstar of medical necessity determinations

Understanding Medical Necessity and the Evolution of Injuries Over Time

In New York’s no-fault insurance system, determining medical necessity often hinges on various factors, including the timing of medical examinations and treatments. Insurance companies and defense attorneys frequently argue that medical conditions must be documented immediately after an accident to be considered legitimate. However, a recent First Department decision challenges this rigid approach, recognizing that injuries can develop and change significantly over time.

This principle is particularly important in New York No-Fault Insurance Law cases, where the timing and documentation of medical conditions can make or break a claim. The evolving nature of injuries is a critical consideration that courts must weigh when evaluating medical necessity disputes, especially when medical necessity reversals are at stake.

The medical necessity standard in New York requires that treatment be appropriate and necessary for the diagnosis and treatment of injuries sustained in a covered accident. Insurance carriers often rely heavily on independent medical examinations conducted weeks or months after an accident, then argue that any differences between the contemporaneous findings and later examinations indicate fraud or unrelated conditions. This approach ignores basic medical science: injuries evolve, conditions worsen or improve, and the human body’s response to trauma is not static.

Case Background

In Hayes v Gaceur, plaintiff sought to establish serious injury under New York’s Insurance Law Section 5102(d) following a motor vehicle accident. The defendant insurance company challenged the plaintiff’s claimed injuries to her cervical spine, shoulders, and left knee, arguing that the medical evidence was inconsistent and that delays in treatment undermined the causal connection to the accident.

The procedural posture placed the burden on plaintiff to raise a triable issue of fact as to whether she sustained a serious injury. The defendant had moved for summary judgment, arguing that plaintiff’s injuries did not meet the statutory threshold. The First Department’s analysis focused on whether the medical evidence presented genuine questions requiring trial resolution.

Jason Tenenbaum’s Analysis:

Hayes v Gaceur, 2018 NY Slip Op 04080 (1st Dept. 2018)

“In opposition, however, plaintiff raised an issue of fact as to her claimed cervical spine, shoulder and left knee injuries through the report of her treating orthopedic surgeon. The physician examined plaintiff the day after the accident and on several occasions thereafter. He found limitations in range of motion of her cervical spine the day after the accident and on recent examination; he examined plaintiff’s shoulders and left knee within a month after the accident and found limitations in range of motion at the initial examination and recently (see Perl v Meher, 18 NY3d 208, 218 [“Injuries can become significantly more or less severe as time passes”]“

Legal Significance: The Perl v Meher Principle

The First Department’s citation to Perl v Meher represents a critical acknowledgment of medical reality in personal injury litigation. The Court of Appeals in Perl explicitly recognized that injuries are not frozen in time at the moment of impact. Rather, medical conditions naturally progress, regress, or fluctuate based on numerous factors including the severity of initial trauma, the effectiveness of treatment, patient compliance, and individual physiological responses.

This principle fundamentally challenges the insurance industry’s preference for contemporaneous medical examinations as the sole reliable indicator of injury. While immediate post-accident examinations provide valuable baseline information, they cannot predict or preclude later developments. A patient may appear to have minor injuries in the emergency room, only to develop significant complications days or weeks later as inflammation sets in, soft tissue damage manifests, or biomechanical changes create secondary injuries.

The Hayes decision also addresses the evidentiary weight of treating physician testimony. Unlike independent medical examiners who conduct one-time evaluations, treating physicians have the advantage of longitudinal observation. They witness the injury’s trajectory over time, document treatment responses, and can provide informed opinions about causation based on clinical relationships developed through ongoing care.

Practical Implications for Practitioners

For attorneys representing injured parties, this decision provides critical support when defending against challenges based on timing discrepancies. When insurance companies argue that delayed diagnosis or treatment gaps undermine causation, practitioners can point to the evolving nature of injuries recognized in Hayes and Perl.

However, practitioners must still ensure their medical evidence adequately bridges any temporal gaps. The treating physician’s report should specifically address: (1) the initial findings, (2) the progression or changes observed over time, (3) the clinical reasoning connecting later findings to the original accident, and (4) why the injury’s evolution is consistent with the mechanism of injury and expected medical course.

Defense attorneys, conversely, should focus their challenges on whether the medical evidence actually demonstrates a coherent evolution of injury or whether unexplained gaps, inconsistent complaints, or intervening events suggest alternative explanations for the patient’s current condition.

Key Takeaway

The Hayes decision reinforces that medical conditions are not static and can evolve substantially over time. Courts recognize that the absence of immediate, comprehensive documentation does not automatically invalidate later-discovered or worsening conditions. This principle protects injured parties whose conditions may not manifest fully until days, weeks, or even months after an accident.

Related Articles

• Medical Necessity in No-Fault Insurance, Understanding the First Department’s Victory for Insurance Carriers
• Medical Necessity Determinations, A Landmark Ruling in No-Fault Insurance Litigation
• Date of IME is guidepost for mecical necessity determination

Related Legal Resources

For additional guidance on this topic, see:

• New York no-fault defense
• New York no-fault insurance law

If you have a case involving these issues on Long Island or in the New York City metropolitan area, the Law Office of Jason Tenenbaum, P.C. offers free consultations. Call (516) 750-0595 or contact our office online.