Follow the NF-5

Historical note: Mount Sinai v Dust Transit turned on both the NF-5 submission and the absence of a follow-up to the effective April 15 request. It does not say every early hospital notice must be ignored or that a verification request alone preserves a toll indefinitely.

Last reviewed: September 2026.

The missing follow-up matters as much as the NF-5 in Mount Sinai Hospital v Dust Transit, Inc., decided May 21, 2014. The Second Department upheld summary judgment for the hospital after an earlier interim notice was followed by a completed hospital-facility claim. The self-insured defendant made an effective verification request after that claim arrived, but did not follow it up.

Put the hospital submissions in order

The defendant received an interim notice before receiving the completed NF-5 hospital facility form. A request dated March 15 responded to that earlier notice. The court did not treat it as a request that suspended the payment period for the later NF-5.

The NF-5 was received on April 9. A verification request dated April 15 was therefore effective to toll the claim-determination period. The problem was what happened next: the defendant did not send a follow-up to that request. It could not rely on the earlier correspondence as a substitute.

The form’s label does not explain the whole result. The case requires a reader to match each request to the claim submission and then examine the follow-up sequence. Omitting the April 15 request produces an incomplete account of why the defense failed.

Why the reargument motion mattered

The hospital initially lost its summary-judgment motion. On reargument, the court recognized that it had overlooked or misapprehended the verification material received by the defendant and the significance of the relevant claim dates. It granted the hospital relief, and the Appellate Division affirmed.

Reargument was not a new trial on whether the care was medically necessary. The appeal concerned the procedural basis for treating the benefits as overdue. Nor does this opinion authorize a party to use reargument whenever it dislikes an initial result; the court identified the particular matter that had been overlooked.

The self-insured status of the defendant did not remove the verification issue. Dust Transit was a taxi company defending a claim for assigned first-party benefits. The case should not be described as a general hospital-billing dispute outside the no-fault system.

The signature objection came too late

The defendant also challenged the completeness of the NF-5 because it lacked an original signature. The appellate court rejected that contention because it was raised for the first time on appeal and because the defendant had failed to object within the applicable 10-day period.

That is a preservation and timing ruling, not a holding that signatures on claim forms never matter. A useful account keeps the signature argument separate from the dates governing the verification toll. Winning one procedural point would not automatically resolve the other.

What the case says about hospital forms

Section 65-3.5(f)–(g) addresses prescribed hospital forms and the use of the NF-5. Additional verification and its follow-up have their own requirements. The opinion applied those rules to the submissions before it, rather than announcing that every document bearing a UB-04 label is ineffective for every purpose.

Jason’s original comment below criticizes the form-driven result. That criticism is preserved as part of the archive. The present explanation adds the effective later request and missing follow-up so readers can see the full reason the defendant lost.

Comparing the related timing decisions

The AIG hospital note concerns a different defect: generic investigation language did not amount to the verification request needed to toll the claim. South Nassau Orthopedic concerns when time ran after an EUO had been completed and no other verification remained.

For a working claim chronology, keep the submitted forms, receipt evidence, each request, each follow-up and each response together. This case shows why a single “verification pending” label can hide a missed step. Match each claim to the effective request, then check what the defendant did after that request went unanswered.

Jason’s original commentary

The original comments below are retained as historical commentary. The case-specific corrections and later developments are explained above.

This is the ultimate in form over substance. Strangely, the carrier that receives the UB-04 prior to NF-5 gets penalized for reacting to the UB-04 while implicitly ignoring the NF-5

Connect to the Encyclopedia

Start with the no-fault verification hub and 2026 Chapa update for the governing framework and case directory. Related case notes:

• South Nassau Orthopedic: the clock after a completed EUO.
• Village Medical Supply: a good reason to request manufacturer invoices.
• Recover Medical Services: attorney notice and late EUO requests.
• The recalled AIG opinion and its November replacement.
• Triangle R: provider requests and misaddressed assignor copies.
• St. Barnabas: an insufficient emergency-treatment response.
• Healing Health Products: detailed incoming-mail evidence.

For review of a particular no-fault verification dispute, request a Free Case Review. Keep the requests, responses and relevant claim dates available for that review.