Unsworn Letters Not Enough: Why Medical Necessity Rebuttals Must Be Sworn and Signed

Key Takeaways

• The Appellate Term, First Department held that two letters of medical necessity that were neither sworn nor signed had no probative value in opposition to the insurer’s summary judgment motion.
• With the rebuttal evidence disregarded, the carrier’s prima facie showing of lack of medical necessity stood unrebutted, and the claim was dismissed.
• Substance cannot save form: even a clinically persuasive necessity letter is worthless in motion practice if it is not properly executed.
• Providers opposing peer-review motions should submit affirmed or sworn statements from the treating or prescribing doctor — at minimum, signed.

In New York no-fault insurance disputes, the quality and format of evidence can make or break a case. Healthcare providers seeking reimbursement from insurance companies must meet specific evidentiary standards when submitting documentation to support their claims. This is particularly crucial when it comes to establishing medical necessity—one of the fundamental requirements for coverage under New York No-Fault Insurance Law.

The Appellate Term’s decision in Innovative MR Imaging, P.C. v Praetorian Ins. Co. serves as a stark reminder that even substantively strong medical evidence can be worthless if it fails to meet basic procedural requirements. When insurance companies challenge the medical necessity of treatment through summary judgment motions, healthcare providers must respond with properly authenticated documentation. The court’s analysis demonstrates how technical deficiencies in evidence submission can undermine an otherwise valid claim for reimbursement.

This case highlights the intersection between evidence law and no-fault insurance litigation, where medical necessity determinations often hinge on the admissibility and weight given to supporting documentation.

The Decision

Jason Tenenbaum’s Analysis:

Innovative MR Imaging, P.C. v Praetorian Ins. Co., 2015 NY Slip Op 51402(U)(App. Term 1st Dept. 2015)

“In opposition to defendant’s motion, plaintiff submitted two letters of medical necessity. However, as neither letter of medical necessity was sworn or even signed, they were of no probative value (see Rivers v Birnbaum, 102 AD3d 26, 45 ). As a result, defendant’s prima facie showing that the services were not medically necessary was unrebutted by plaintiff.”

The Legal Framework: Medical Necessity Motion Practice in No-Fault Cases

Some background puts the holding in context. Lack of medical necessity is one of the core defenses available to a no-fault carrier. The defense is typically built on a peer review report — a doctor’s record review concluding that the billed services departed from generally accepted medical practice — and it must be preserved by a timely denial on that ground. When the carrier moves for summary judgment, a sworn peer review or IME report ordinarily satisfies its prima facie burden.

Once that burden is met, the spotlight shifts to the provider. The classic rebuttal is an affidavit or affirmation from the treating or prescribing doctor that meaningfully refers to and rebuts the peer reviewer’s stated rationale. That is where form becomes decisive. New York motion practice runs on sworn proof: affidavits, and for physicians, CPLR 2106 affirmations. A document that carries no oath — and here, not even a signature — is just paper. Citing Rivers v Birnbaum, the Appellate Term gave the two unsworn, unsigned necessity letters no probative value at all.

The result was mechanical. With the letters disregarded, nothing opposed the carrier’s prima facie showing, and “unrebutted” prima facie proof ends the case at the summary judgment stage.

Why This Matters for Providers and Carriers

For medical providers, the lesson costs nothing to implement and everything to ignore. The treating doctor who writes a letter of medical necessity is usually willing to sign and affirm it — counsel simply has to ask before the opposition is filed, not after the decision comes down. A reimbursement claim that may have been entirely meritorious died here on execution formalities.

For billing companies and collection counsel, this case belongs in the intake checklist: every necessity rebuttal that leaves the office should be checked for a signature and a proper jurat or affirmation language. The same discipline applies to evidence offered in any no-fault posture, from EUO transcripts to medical records.

For carriers, Innovative MR Imaging is a reminder to scrutinize the form of opposition papers before conceding a triable issue. An objection that rebuttal evidence is unsworn or unsigned can win the motion outright, independent of the medical debate.

Practice Pointers

• Providers: have the prescribing or treating doctor sign and swear to (or affirm under CPLR 2106) every letter of medical necessity used in litigation. Unsworn drafts are for the claim file, not the courthouse.
• Providers: the rebuttal should engage the peer review’s specific rationale; a properly sworn but conclusory letter has its own problems.
• Carriers: check opposition papers for execution defects first — they are outcome-determinative and require no expert response.
• Both sides: remember that the necessity fight is framed by the denial. A carrier that did not timely deny on medical necessity grounds may never reach this stage.

Related Resources

• A simple medical necessity decision
• Objected to inadmissible proof spells doom
• No-Fault Insurance Medical Necessity, When Stipulated Evidence Defeats Claims
• Medical necessity and peer review requirements — the firm’s cluster hub
• The firm’s Legal Encyclopedia
• No-Fault Defense practice page

Frequently Asked Questions

What is a letter of medical necessity in a no-fault case?

It is a statement, usually from the treating or prescribing doctor, explaining why the billed treatment or testing was medically appropriate for the patient. In litigation it serves as the provider’s rebuttal to the insurer’s peer review, but it only counts as evidence if it is properly sworn or affirmed.

Can an unsworn doctor’s letter defeat an insurer’s summary judgment motion?

No. As Innovative MR Imaging v Praetorian holds, a letter that is unsworn — there, not even signed — has no probative value. If it is the only opposition, the carrier’s prima facie showing of lack of medical necessity stands unrebutted and the claim is dismissed.

How should a treating doctor’s rebuttal be executed?

As a sworn affidavit before a notary or, for physicians and certain other professionals, an affirmation under CPLR 2106. It should be signed, dated, and should directly address the reasoning in the carrier’s peer review report.