What is a Treatment Variance Under NY's Medical Treatment Guidelines?

The New York Medical Treatment Guidelines (MTGs) are body-part-specific clinical protocols that govern most workers’ compensation medical care — neck, mid back, low back, knee, shoulder, carpal tunnel, hand and wrist, ankle and foot, hip and groin, occupational asthma, PTSD/anxiety/depression, traumatic brain injury, and more. Treatment that falls within the MTGs typically does not require prior authorization — the treating physician proceeds and the carrier pays. Treatment that exceeds, extends, or falls outside the MTGs requires a variance — submitted by the treating physician on Form MG-2, addressing why the proposed treatment is medically necessary and why the MTGs’ standard approach is insufficient for this patient. The carrier has a statutory window to respond (and a default-grant rule if they miss it); denied variances can be appealed to a Medical Director’s Office review or to the Workers’ Compensation Law Judge.

Within the MTGs, no auth needed. Outside the MTGs, MG-2 variance — and the appeal path matters.

TL;DR

• The Medical Treatment Guidelines (MTGs) govern most NY WC care for the major body parts and conditions.
• In-MTG treatment generally does not require pre-authorization.
• Out-of-MTG treatment requires a Form MG-2 variance filed by the treating physician.
• The carrier has a statutory response window, and missing it can default-grant the variance.
• Denied variances go to Medical Director’s Office review and can be litigated at hearing.

How the MTGs structure care

The MTGs are clinical protocols developed and maintained by the WCB. Each guideline addresses initial assessment, diagnostic testing, conservative care, advanced treatment, surgical indications, and post-operative care for the body part or condition.

Treatment within the MTGs — first-line conservative care, in-range physical therapy, indicated injections, surgery when criteria are met — typically requires no pre-authorization from the carrier. The physician treats, the carrier pays.

Treatment outside the MTGs requires a variance.

When a variance is needed

A variance request is needed when proposed treatment:

• Exceeds the frequency or duration specified in the MTG (more visits, longer course)
• Falls outside the MTG’s recommended treatments for the condition
• Is not addressed by any MTG (some less common conditions)
• Is contraindicated under the MTG but medically necessary for this patient given specific circumstances

Common examples: extended physical therapy beyond the guideline limit, certain injection protocols, certain surgical techniques, post-operative care that exceeds the standard course.

The MG-2 variance process

The treating physician files Form MG-2, attaching the medical rationale. The submission needs to address:

• The patient’s specific clinical situation
• Why the standard MTG approach is insufficient
• The medical necessity and expected outcome of the proposed treatment
• Supporting literature, prior treatment results, or other evidence

Filing requires both the WCB and the carrier to receive copies, and the carrier has a statutory window to respond. The default-grant rule — if the carrier doesn’t respond in time, the variance is deemed granted — is structural protection for the worker.

The carrier’s response options

The carrier can:

• Grant the variance — treatment proceeds, payment follows.
• Deny based on the carrier’s medical review — often citing a peer review opinion that the proposed treatment isn’t medically necessary or doesn’t conform to evidence-based standards.
• Request additional information — extending the timeline (with limits).

A denial triggers the appeal path.

Appealing a denied variance

A denied MG-2 variance can be:

• Submitted for Medical Director’s Office (MDO) review — an internal medical review by WCB staff, paper-based, relatively fast.
• Litigated at a hearing before the Workers’ Compensation Law Judge if the issue is unresolved or if the MDO sustains denial.

The MDO review is often the more efficient path for medical-necessity disputes. Hearing litigation is appropriate when there are issues beyond pure medical necessity (causation, applicability, prior denials).

What I see go wrong

• Treating physician doesn’t know about the MTGs. Care is delivered, the carrier denies payment, and the patient is caught in the middle. Physicians treating NY WC patients regularly need to be MTG-literate.
• MG-2 filed without sufficient medical rationale. A bare-bones MG-2 invites denial. The form needs substantive narrative.
• Missed appeal deadlines. Denials have response windows.
• Denial accepted without challenge. Many denied variances would have been granted on MDO review or at hearing — but the variance dies because no one pushed it.

In-MTG care that’s still denied

Sometimes the carrier denies treatment that is within the MTGs, claiming it falls outside. That’s a different argument — not a variance, but a dispute over whether the proposed treatment is in-MTG in the first place. Same appeal paths apply.

What to do next

If treatment has been denied — pre-authorization withheld, payment refused, MG-2 sustained — there’s usually an appeal path that works. Don’t delay it; some clinical opportunities (post-operative windows, escalating symptoms) are time-sensitive. Contact me directly.

Related pages

• Where Am I? — I’m receiving weekly checks
• Where Am I? — My checks stopped or got reduced
• Will workers’ comp pay for my surgery?
• Can I choose my own doctor?
• What is an IME and can I refuse one?
• Denied claims