Aetna · Iort · US health-plan appeal rights

Iort denied for failing step therapy by Aetna?

Q: How long do I have to appeal a Aetna Iort denial?

Internal appeal window: Typically 180 days from the denial date. External review window: Typically 60–120 days after the final internal denial. The clock starts from the date on the denial letter.

Step-therapy denials usually flip when the appeal documents that prior alternatives were tried and failed, or were contraindicated, or aren't safe for the patient.

By Michael John Ryan, Founder & Privacy Officer, DenialHelp, LLC

Last reviewed 2026-05-09

Policy data current as of 2026-05-01

US health-plan appeal rights

Cite: Most US health plans have appeal rights under either the ACA, ERISA, or Medicare/Medicaid rules

Most US health plans are required by federal law to give you both an internal appeal (where the insurer reconsiders) and an external review (where an independent reviewer decides). The exact timelines and processes depend on what kind of plan you have — marketplace / employer group, self-funded, Medicare Advantage, or Medicaid MCO — but in every case there's a window after the denial during which you have the right to fight it.

Internal appeal window

Typically 180 days from the denial date

External review window

Typically 60–120 days after the final internal denial

What Aetna typically requires

Aetna considers IORT medically necessary for select early-stage breast cancer patients meeting TARGIT-A inclusion criteria: age ≥50, unifocal invasive ductal carcinoma, T1 (≤2cm), node-negative, hormone-receptor positive, HER2-negative, no extensive intraductal component. IORT may be delivered as single-fraction at lumpectomy (boost) or as primary partial-breast irradiation. Aetna considers IORT investigational/experimental for most non-breast indications (rectal, glioblastoma, sarcoma, recurrent rectal/pelvic) absent specific guideline support.

Source policy: Aetna CPB 0721 — Intraoperative Radiation Therapy (IORT) — read the policy

What works in the appeal

TARGIT-A 5-yr long-term (Vaidya BMJ 2020;370:m2836) — non-inferior local control vs WBRT for selected patients meeting TARGIT-A criteria, sustained at 12-yr follow-up (Vaidya 2024). ELIOT 5-yr + 10-yr (Veronesi Lancet Oncol 2013;14:1269; Orecchia 2021) — Italian electron IORT outcomes for selected low-risk profile. GEC-ESTRO consensus on partial-breast irradiation 2010/2024 update (Strnad). ASTRO APBI Consensus Statement 2017/update — IORT category eligibility table. NCCN Breast Cancer v2.2024 lists IORT as APBI option meeting selection criteria. For rectal IORT cite NCCN Rectal Cancer v3.2024 (locally advanced + R0 close margin) and Calvo et al EJC 2014 IORT outcomes. Document staging completion (sentinel node, IHC), final pathology with margins, multidisciplinary tumor board recommendation. Submit ABS / ASTRO / ASCO position statements where applicable.

The Aetna angle on Iort

## Why Aetna Requires Step Therapy Before Approving Intraoperative Radiation Therapy — and How to Appeal

A step-therapy denial for Intraoperative Radiation Therapy (IORT) from Aetna means the plan has determined that standard external-beam radiation therapy or another prior-line treatment must be attempted before IORT will be authorized. This denial pattern is clinically significant because IORT is an intraoperative procedure — it is delivered during surgery, at a specific moment in the care sequence that cannot be replicated after the fact. A step-therapy requirement that demands a post-operative radiation course before IORT is authorized misunderstands the nature of IORT and is a strong basis for appeal.

## Why This Denial Is Appealable

IORT's defining clinical feature is that it is delivered to the open surgical field at the time of resection. If Aetna's step-therapy protocol requires the patient to first complete a course of external-beam whole-breast or other radiation, that sequence is clinically impossible for IORT — the surgical window has passed. The treating radiation oncologist can make a compelling clinical argument that the step-therapy requirement is inapplicable by definition, and that applying it amounts to a constructive denial of the benefit. This argument, supported by the radiation oncology literature and applicable professional society guidelines, frequently succeeds on external review.

## Federal Appeal Framework

Internal appeal: File under ERISA §503 or applicable state law within the deadline on the denial notice. Frame the argument not just as a medical-necessity appeal but as a challenge to the applicability of the step-therapy requirement to an intraoperative procedure.
Step-therapy exception: Submit a formal step-therapy exception request alongside or prior to the appeal, citing the clinical impossibility of completing the required step before the planned surgery date.
External review: After exhausting internal appeals, escalate under ACA §2719 to an independent IRO within four months of the final adverse determination. IRO reviewers — who are independent oncologists — are well positioned to recognize the clinical logic of this argument.
Expedited review: If surgery is scheduled, request expedited review — decisions are typically required within 72 hours.

## Documentation to Gather

Surgical timeline: Documentation of the planned surgical date and the clinical reasons it cannot be postponed while a prior step is completed.
Treating oncologist's letter: A detailed letter from the radiation oncologist explaining that IORT is inherently intraoperative, why the step-therapy sequence is clinically inapplicable, and why IORT is the appropriate radiation modality for this patient's diagnosis and surgical plan.
Diagnosis and staging: Full pathology, staging, and surgical plan documentation.
Prior treatment history: If any prior-line radiation or other treatment has already been completed, document that history with dates and outcomes.
Professional society guideline support: Reference to the applicable ASTRO, NCCN, or SSO guidance supporting IORT as a primary or alternative radiation technique in this clinical scenario.

## Criteria-Mapping Structure

Obtain the specific step-therapy provision Aetna applied. Map each step requirement to the clinical timeline and explain — for each — why it has been met, why it is inapplicable, or why it is clinically contraindicated. The step-therapy inapplicability argument is the strongest available here; lead with it, support it with the oncologist's letter and guideline citations, and request that Aetna grant a step-therapy exception or reverse the denial on the merits.

Next steps

Find the date on the denial letter — your appeal window starts there.
Read your plan's Summary of Benefits and Coverage (SBC) for the specific deadlines.
Request the insurer's claim file in writing — they must provide it.
Submit your appeal in writing with new clinical evidence and a physician statement.

Get the letter drafted

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Related appeal guides

Other Aetna appeals

Other denial reasons for Aetna Iort

denied as not medically necessary denied as non-formulary denied for missing prior authorization denied as experimental or investigational denied as not FDA-approved for this use

This guide describes general US federal appeal rights based on Most US health plans have appeal rights under either the ACA, ERISA, or Medicare/Medicaid rules. Your specific plan documents (Summary of Benefits and Coverage, Evidence of Coverage) override anything here. DenialHelp is not your lawyer and not your physician — we draft appeal letters that your physician signs. Outcomes depend on your insurer's decision and factors outside our control. Reviewed by Michael John Ryan on 2026-05-09. Editorial standards: denialhelp.com/authors.