NY Workers’ Comp Rules for 2026-2027: What Changed and What It Means for Documentation

September 23, 2026

By Medi-EHR Clinical Team

Worker's Compensation

Medi-EHR Clinical & Compliance Team

Healthcare provider documenting a patient visit for New York Workers' Compensation

NY Workers’ Comp Rules for 2026-2027: What Changed and What It Means for Documentation

In this article:

The Rate Change Itself Is the Easy Part
Section 21-a: What “Paid Without Liability” Means for Your Documentation
PAR and Medical Treatment Guideline Documentation
The New Resident and Fellow Physician Billing Rule
Key Takeaways
FAQ

The 2026-2027 NY workers’ comp rules change three things a practice has to document or code differently. There’s a new maximum weekly benefit rate tied to the date of injury. There’s a formal process for claims paid “without liability” under Section 21-a. And residents and fellow physicians who treat injured workers now bill under new rules. Getting any of these wrong in the chart or on the bill is a common, avoidable reason a claim stalls.

The Rate Change Itself Is the Easy Part

Effective July 1, 2026 through June 30, 2027, New York’s maximum weekly workers’ compensation benefit rate is $1,281.50, and the minimum is $384.45. The state calculates both from the 2025 New York State Average Weekly Wage of $1,922.25 (two-thirds of NYSAWW for the maximum, one-fifth for the minimum). The detail practices most often get wrong isn’t the dollar figure. The applicable rate is locked to the claimant’s date of injury, not the date the claim is processed or paid. New York still pays a 2024 injury at the 2024-2025 rate today, even though a new claim opened this week uses the new figure. Recording the date of injury accurately in the chart from day one determines which rate schedule actually applies.

Section 21-a: What “Paid Without Liability” Means for Your Documentation

Under Section 21-a, an insurer can extend its investigation period up to 365 days before formally accepting or denying a claim. In the meantime, it marks payments “without liability” (W) rather than “with liability” (L) on the required Electronic Data Interchange filing. A “W” designation is not a denial, and it is not an admission. It simply reserves the insurer’s right to contest the claim later, while the injured worker still gets paid and treated in the interim.

For practices, the documentation obligation doesn’t change based on which letter is on the filing. Keep documenting treatment, medical necessity, and work status exactly as you would for any other NY workers’ comp claim. A payer cannot use the 21-a “without liability” status as grounds to object to a medically necessary bill. A practice shouldn’t treat it as a reason to loosen its own chart notes, either. If the claim is later contested, the record built during the 21-a window decides the case.

PAR and Medical Treatment Guideline Documentation, Where Claims Actually Get Denied

New York’s Medical Treatment Guidelines (MTGs) are mandatory for any work-related condition with a final effective guideline, regardless of payer. Most avoidable denials trace back to a documentation gap here, not to the rate change or the 21-a designation. Three Prior Authorization Request (PAR) types apply:

MTG Confirmation PAR — optional, used to confirm the practice is interpreting a guideline correctly before proceeding.
Variance PAR — required any time proposed treatment falls outside the guideline’s own parameters.
Special Services PAR — always required for complex procedures such as spinal fusion, joint replacement, or nerve stimulator implantation. This applies whether or not the guideline is being followed.

Practices must submit a PAR before providing non-guideline care, not after the fact. The documentation behind it needs to show real substance. Include patient history and physical exam findings specific to the diagnosis and treatment plan, plus a medical opinion establishing necessity. For a request to extend existing treatment, add objective evidence of functional improvement. Explain why the treatment hasn’t yet produced its maximum effect. A chart note often just states a diagnosis and a treatment plan without tying the two together with guideline-specific findings. That gap is the single most common reason a variance request comes back denied.

The New Resident and Fellow Physician Billing Rule

Since May 9, 2025, resident and fellow physicians enrolled in ACGME-accredited programs can treat injured workers in New York. The change affects roughly 20,000 residents and fellows across more than 1,400 training programs at nearly 70 teaching hospitals statewide. The resident or fellow doesn’t need separate Board authorization. Their supervising, Board-authorized faculty physician’s authorization covers the encounter, but the supervision itself must meet standard graduate medical education requirements.

Two things have to show up correctly for these encounters to bill and process cleanly:

The clinical note must name the treating resident or fellow, name their supervising physician, and state whether the condition is work-caused, the patient’s current work status, and any percentage of temporary disability — the same elements any workers’ comp note needs, just with the resident/fellow and supervisor both identified by name.
The bill for non-surgical services goes out under the supervising physician using modifier 1R at the standard fee schedule rate (the modifier flags resident/fellow involvement; it does not reduce payment). Practices bill surgical assistance by a resident or fellow separately, using modifier 84, reimbursed at 16% of the applicable physician fee.

Missing either modifier is enough to bounce an otherwise valid bill. So is filing the claim under the resident’s own name instead of the supervising physician’s.

Key Takeaways

The 2026-2027 maximum/minimum weekly rates ($1,281.50 / $384.45) apply based on the claimant’s date of injury, not the date the claim is processed.
A Section 21-a “paid without liability” designation changes the insurer’s investigation timeline, not a practice’s documentation obligations — keep charting exactly as usual.
A Variance or Special Services PAR must be submitted before non-guideline or complex-procedure treatment is provided, with findings tied specifically to the diagnosis and treatment plan.
Resident and fellow physicians can treat injured workers under their supervising physician’s authorization as of May 9, 2025, but the chart note must name both, and bills must carry modifier 1R (non-surgical) or 84 (surgical assist).

Frequently Asked Questions

Section 21-a lets an insurer extend its investigation of a claim up to 365 days before formally accepting or denying it. In the meantime, the insurer pays benefits “without liability.” This status doesn’t change a practice’s documentation or billing obligations. Chart treatment, medical necessity, and work status the same way regardless of whether the claim is “with liability” or “without liability.”

Under Section 21-a, an insurer can take up to 365 days to investigate a claim. It pays benefits “without liability” in the interim, rather than immediately accepting or denying compensability.

Modifier 1R identifies non-surgical services provided by a resident or fellow physician treating an injured worker under a supervising physician’s authorization. Practices bill it under the supervising physician at the standard fee schedule rate, and it does not reduce payment. Surgical assistance by a resident or fellow uses modifier 84 instead, reimbursed at 16% of the applicable fee.

Not for treatment that follows the applicable Medical Treatment Guideline exactly; an MTG Confirmation PAR is optional in that case. A Variance PAR is required whenever proposed treatment falls outside the guideline’s parameters. A Special Services PAR is always required for complex procedures like spinal fusion, joint replacement, or nerve stimulator implantation, whether or not the guideline is being followed.

$1,281.50 per week (minimum $384.45), effective July 1, 2026 through June 30, 2027, calculated from the 2025 New York State Average Weekly Wage. The rate that applies to a given claim is determined by the claimant’s date of injury, not the date the claim is processed.

Documenting NY Workers’ Comp and No-Fault Claims Correctly, Every Time

Rate changes, Section 21-a filings, PAR documentation, and resident/fellow billing modifiers all come down to the same requirement. The chart and the claim have to agree, every time, without relying on staff to remember which rule applies to which case. Medi-EHR’s Workers Comp/No-Fault module handles exactly this for NY workers’ comp and no-fault claims alike. It includes specialized documentation templates and coding checked against claim type before submission. It also adds IME scheduling and reporting support, plus NY NF-3-style no-fault verification form generation. All of this lives inside the same platform as billing and e-prescribing. Contact Medi-EHR to see how it handles the 2026-2027 rule changes without extra manual tracking.