Medical Necessity Trials in New York No-Fault Cases: Burden of Proof and Expert Witness Credibility

When insurance companies challenge the medical necessity of treatment in New York no-fault cases, the matter often proceeds to trial where credible expert testimony becomes crucial. The recent decision in Parkway Hosp., Inc. v Integon Natl. Ins. Co. (2019 NY Slip Op 51187) demonstrates how medical necessity trials can “go awry” when an insurance company’s expert witness lacks credibility. Understanding the burden of proof and evidentiary standards in medical necessity trials is essential for healthcare providers, patients, and attorneys navigating no-fault disputes.

Understanding Medical Necessity in New York No-Fault Law

Medical necessity is a fundamental requirement for coverage under New York’s no-fault insurance system. Treatment must be reasonable and necessary for the diagnosis or treatment of injuries sustained in a motor vehicle accident to qualify for benefits under Insurance Law § 5102(a)(1).

Definition and Standards

Medical necessity in the no-fault context requires that treatment be:

Clinically Appropriate:

• Consistent with accepted medical standards
• Appropriate for the diagnosis and treatment of the injury
• Based on sound medical judgment
• Supported by medical evidence and documentation

Causally Related:

• Connected to injuries sustained in the motor vehicle accident
• Not treatment for pre-existing conditions unrelated to the accident
• Directly addressing accident-related medical issues
• Reasonable in timing relative to the accident

The Parkway Hospital Case: When Defense Strategies Fail

The Parkway Hosp., Inc. v Integon Natl. Ins. Co. decision provides important lessons about medical necessity trials and the critical role of credible expert testimony.

Case Background and Outcome

In this case, Integon National Insurance Company challenged the medical necessity of services provided by Parkway Hospital. However, the Civil Court found in favor of the hospital, awarding judgment of $17,388.68. The key factor in this decision was the court’s assessment that “defendant’s witness was not credible.”

Court’s Analysis of Burden of Proof

The Appellate Term emphasized the fundamental principle governing medical necessity trials: “At a no-fault trial involving a defense of lack of medical necessity, an insurer has an initial burden to rebut the presumption of medical necessity which attaches to a claim form.”

This establishes that:

• Healthcare providers benefit from a presumption of medical necessity
• Insurance companies must affirmatively prove treatments were unnecessary
• The quality and credibility of expert testimony is crucial
• Courts carefully evaluate the strength of evidence presented by both sides

The Credibility Factor

The court’s determination that the insurance company’s expert witness was not credible highlights several important considerations:

Expert Qualifications:

• Appropriate medical specialty and credentials
• Relevant experience with similar cases
• Understanding of applicable treatment standards
• Familiarity with no-fault insurance requirements

Testimony Quality:

• Clear and logical explanations of medical opinions
• Adequate basis for conclusions reached
• Consistency with medical records and evidence
• Ability to withstand cross-examination

Burden of Proof in Medical Necessity Trials

Understanding the allocation of burden of proof is crucial for success in medical necessity trials.

Initial Presumption of Medical Necessity

New York law creates a presumption that properly submitted claims for medical treatment are necessary. This presumption is based on several policy considerations:

Provider Expertise:
Healthcare providers are presumed to have the medical knowledge and judgment necessary to determine appropriate treatment.

Professional Standards:
Licensed medical professionals are expected to follow accepted standards of care and not provide unnecessary treatment.

Administrative Efficiency:
The presumption allows the no-fault system to process legitimate claims efficiently without requiring extensive proof of necessity for routine treatment.

Insurance Company’s Burden to Rebut

To overcome the presumption of medical necessity, insurance companies must present credible evidence that the treatment was unnecessary. This burden requires:

Expert Medical Testimony:
Qualified medical experts must opine that the treatment was not medically necessary based on accepted medical standards.

Adequate Foundation:
Expert opinions must be based on thorough review of medical records, applicable medical literature, and relevant treatment guidelines.

Clear Standards:
Experts must articulate the medical standards against which they are measuring the necessity of treatment.

Expert Witness Requirements in Medical Necessity Cases

The quality and credibility of expert witnesses often determines the outcome of medical necessity trials.

Qualification Standards

Expert witnesses in medical necessity cases must meet specific qualification requirements:

Professional Credentials:

• Board certification in relevant medical specialty
• Active medical license in good standing
• Relevant clinical experience and training
• Familiarity with standard of care issues

Specialized Knowledge:

• Understanding of the specific type of treatment in question
• Knowledge of applicable treatment protocols and guidelines
• Experience with similar cases and conditions
• Familiarity with no-fault insurance requirements

Common Expert Witness Problems

Several issues can undermine the credibility of expert testimony in medical necessity cases:

Inadequate Preparation:

• Insufficient review of medical records
• Lack of familiarity with case-specific facts
• Failure to research applicable medical standards
• Inadequate preparation for cross-examination

Bias and Advocacy:

• Apparent financial interest in the outcome
• History of always testifying for one side
• Advocacy rather than objective analysis
• Predetermined conclusions not supported by facts

Strategic Considerations for Medical Necessity Trials

Success in medical necessity trials requires careful preparation and strategic thinking.

For Healthcare Providers

Pre-Trial Preparation:

• Comprehensive documentation of medical decision-making
• Clear records supporting treatment necessity
• Identification of qualified expert witnesses
• Preparation of medical literature supporting treatment choices

Trial Strategy:

• Presentation of clear, compelling medical evidence
• Expert testimony explaining treatment rationale
• Documentation of positive patient outcomes
• Challenging insurance company expert credibility

For Insurance Companies

Case Evaluation:

• Thorough review of medical records and documentation
• Identification of potential medical necessity issues
• Assessment of available expert witness options
• Cost-benefit analysis of proceeding to trial

Expert Witness Selection:

• Qualified, credible medical professionals
• Experts with relevant specialty knowledge
• Witnesses capable of effective testimony
• Professionals without apparent bias or conflicts

For more information about medical necessity in New York no-fault cases, explore these related topics:

• Understanding New York’s No-Fault Insurance Law
• Challenging No-Fault Benefit Denials
• Expert Witnesses in Personal Injury Cases

Frequently Asked Questions About Medical Necessity Trials

Q: What is the presumption of medical necessity, and how does it work?

A: New York law presumes that properly submitted medical claims are necessary. This means healthcare providers don’t have to prove necessity initially – instead, insurance companies must present credible evidence that treatment was unnecessary. This presumption exists because licensed medical professionals are expected to provide only appropriate care.

Q: Can an insurance company deny coverage just by saying treatment wasn’t necessary?

A: No, insurance companies must present credible medical expert testimony to overcome the presumption of medical necessity. They cannot simply deny claims without providing qualified expert opinions supported by medical evidence and accepted standards of care.

Q: What happens if both sides have expert witnesses who disagree?

A: When expert witnesses disagree, courts evaluate the credibility and qualifications of each expert, the strength of their opinions, and the evidence supporting their conclusions. The court will ultimately decide which expert testimony is more credible and persuasive.

Q: How important is expert witness credibility in these cases?

A: Expert witness credibility is often the deciding factor in medical necessity trials. As the Parkway Hospital case demonstrates, even if an insurance company challenges medical necessity, their expert must be credible to succeed. Courts carefully evaluate expert qualifications, preparation, bias, and the foundation for their opinions.

Q: Can a healthcare provider win a medical necessity trial without expert testimony?

A: While the presumption of medical necessity helps healthcare providers, expert testimony is usually necessary to defend against well-prepared insurance company challenges. Providers need qualified experts to explain why their treatment was appropriate and to counter insurance company expert opinions.

Conclusion

Medical necessity trials in New York no-fault cases require careful attention to burden of proof requirements and expert witness credibility. The Parkway Hosp., Inc. v Integon Natl. Ins. Co. case demonstrates how medical necessity defenses can “go awry” when insurance companies fail to present credible expert testimony to overcome the presumption of medical necessity.

Healthcare providers benefit from the presumption that properly submitted claims are for necessary treatment, but they must be prepared to defend their treatment decisions with qualified expert witnesses and comprehensive documentation. Insurance companies challenging medical necessity bear the burden of presenting credible evidence that treatment was unnecessary.

The credibility of expert witnesses often determines the outcome of these trials, making careful selection and preparation of experts crucial for both sides. Success in medical necessity trials requires understanding the legal standards, preparing compelling expert testimony, and presenting clear evidence supporting treatment decisions.

If you’re facing medical necessity challenges in no-fault cases or need experienced representation for medical necessity trials, don’t leave your case to chance. Call 516-750-0595 for a free consultation with New York no-fault attorneys who understand the complexities of medical necessity law and have experience defending healthcare providers and challenging improper denials.

This article is for informational purposes only and does not constitute legal advice. Each medical necessity case involves unique circumstances, and you should consult with a qualified attorney about your specific situation.

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Legal Update (February 2026): Since this 2019 post, New York’s no-fault medical necessity standards and evidentiary requirements may have been modified through regulatory amendments, updated fee schedules, or changes to Insurance Law § 5102 provisions. Additionally, court decisions since 2019 may have refined the burden of proof standards and expert witness credibility requirements discussed in this analysis. Practitioners should verify current statutory provisions, regulations, and recent case law developments when handling medical necessity disputes.