Wisconsin lets you choose the reviewer yourself

Open now, and a deadline extension runs to October 2, 2026

The federal process was unavailable for part of this summer. CMS closed the HHS-administered Federal External Review Process between July 1 and August 3, 2026 and reopened it on July 31, 2026, and it has extended the filing deadline for people the closure shut out.

• If you could not request external review between July 1, 2026 and August 3, 2026, you may be eligible — and if you are, you have until October 2, 2026 to request it.
• The extension also reaches any state: it covers a self-insured non-Federal governmental health plan that uses the federal process, wherever the plan is.
• If you submitted a request before July 1, 2026, you do not need to resubmit or send anything further now.
• If you already received a final decision through the federal process, the extension does not apply to you.

What the reviewer has to be

Wisconsin specifies the reviewer's credentials rather than leaving them to the organization. A clinical peer reviewer conducting an independent review must be a provider who is expert in treating the medical condition at issue and knowledgeable about the treatment under review through current, actual clinical experience. A physician reviewer must hold current certification by a recognised American medical specialty board in the area appropriate to the subject of the review, and must have no history of disciplinary sanctions.

You name the reviewer in the request itself

In most states the request asks for a review and someone else assigns the reviewer. Wisconsin's statute puts the selection in the request: the insured or authorised representative gives timely written notice of the request for independent review, and of the independent review organization selected, to the insurer that made the coverage denial. The insurer then immediately notifies the commissioner and the organization the insured picked.

• The commissioner keeps an up-to-date list of certified independent review organizations.
• The insured selects from that list; the insurer is notified of the choice rather than making it.
• The written request goes to the address given in the company's final written decision.

Four months from the grievance decision

The written request must reach the address in the company's final written decision within four months — 120 days — of the date that grievance decision was provided. As elsewhere, the clock runs from the decision rather than from the date of service or the original denial.

Binding — with one deliberate asymmetry

A decision of an independent review organization binds the insured and the insurer. Wisconsin then carves out an exception that runs one way only: a decision on a pre-existing-condition exclusion denial, or on a rescission, is not binding on the insured. On those two questions an adverse review closes nothing, because the legislature treated coverage-destroying determinations differently from ordinary coverage disputes.

• Ordinary coverage denials: the determination binds both parties.
• Pre-existing-condition exclusion denials: not binding on the insured.
• Rescissions: not binding on the insured.

Two systems, and reading which one applies

Wisconsin runs a genuine, binding independent-review programme of its own — and, for ACA external review, CCIIO lists the state among those using the HHS-administered federal process. Both descriptions are accurate for different coverage, which makes the final internal denial notice the document that settles it. It has to explain how to request external review, and that instruction is the one to follow.

If your plan takes the federal route

Where the denial routes to the HHS-administered federal process rather than the state one, the mechanics change and so do the numbers. The federal standard under 45 CFR 147.136 gives four months from the final internal denial to request review, a standard decision arrives within 45 days, and an urgent one within 72 hours. The reviewer is independent of the plan and the determination binds it — but you do not choose the organization, and the request follows the instructions printed on the denial rather than Wisconsin's certified list.

• Four months from the final internal adverse determination to request it.
• A standard federal external review is decided within 45 days.
• An expedited review is decided within 72 hours.
• The reviewer is assigned, not selected by you — the one real difference from the state track.

For Wisconsin practices

Two habits follow from the statute. Keep the commissioner's certified-IRO list to hand, since the choice is yours to make and is exercised in the request itself. And treat a pre-existing-condition or rescission determination as a different animal from a medical-necessity one: an adverse decision on those grounds does not bind the insured, so it is not the end of the matter in the way an upheld necessity denial would be.