External review in Oregon: the independent review (IRO) process

How Oregon's external review works

Oregon's external review is handled by the Division of Financial Regulation (DFR). It covers four kinds of dispute: medical necessity, experimental or investigational treatment, the appropriate setting or level of care, and prescription-drug formulary exceptions. The defining Oregon feature is neutrality by design — the DFR randomly assigns your case to an independent review organization it contracts with, so the health plan has no hand in choosing the reviewer.

• Eligible disputes: medical necessity, experimental/investigational, appropriate level of care, and drug-formulary exceptions.
• The DFR randomly assigns the IRO — the plan cannot select it.
• The IRO's decision binds the insurer; an overturn means the plan must cover the service.
• No Surprises Act payment disputes are handled through the separate federal process, not this one.

The 180-day deadline

You have 180 calendar days after receiving the plan's final adverse determination to request external review — a notably longer window than the federal four-month standard. The request is routed through the plan, which by law must forward it to the DFR for IRO assignment (within two days for standard cases, immediately for expedited ones).

How to file

1. 1

   Finish the internal appeal

   Complete the plan's internal appeal first, except in urgent situations, which can move immediately.

2. 2

   Request external review

   Submit the referral request; the insurer is required to forward it to the Division of Financial Regulation ([email protected]) for assignment.

3. 3

   The DFR assigns an IRO at random

   The Division emails you the name and contact of the randomly chosen independent review organization.

4. 4

   The IRO decides on the record

   The reviewer evaluates the denial and the medical documentation; the decision binds the plan.

How fast — and who pays

• Standard external review: decided within 30 calendar days.
• Expedited (urgent): within 3 calendar days — for emergencies, admissions/continued stays, or when a provider certifies the normal timeline would seriously jeopardize the patient.
• The IRO's cost is borne by the insurer, not you.
• The IRO's decision is binding on the plan.

What Oregon's published outcomes show

Oregon is one of the few states that publishes its external-review results — the DFR posts an IRO case-detail report, updated quarterly. Recent years tell a consistent story: reviewers overturn or partially overturn the plan in roughly a third of cases (about 34% of 555 cases in 2024, with similar shares in 2021–2023) and uphold it in the rest. A denial isn't a formality to accept — but it isn't a coin flip either, and the requests that win are the ones that tie the record to the coverage criterion.

For Oregon providers and billers

Two Oregon rules give a practice leverage before a case ever reaches an IRO. A prior authorization for coverage or medical necessity is binding on the insurer if obtained within 60 days before the service (ORS 743B.420) — useful against a retroactive denial. And Oregon's step-therapy override (ORS 743B.602) requires the plan to rule on an exception within 72 hours (two business days), with the request deemed granted if the plan misses the deadline.