TMS denied for failing step therapy by Aetna?

Aetna's specific coverage criteria for tms are defined in its own published medical/coverage policy and the FDA-approved prescribing label. A successful appeal documents that your medical records satisfy each criterion those sources list — confirmed diagnosis, any required prior treatments (with dates and outcomes), and clinical severity. If the exact criteria weren't included with your denial, request them in writing; your appeal then maps each requirement to the matching fact in your chart.

## Why Aetna Requires Step Therapy Before TMS — and How to Appeal

Aetna's coverage policy for transcranial magnetic stimulation (TMS) typically requires documentation that a patient has tried and not adequately responded to a specified number of antidepressant medication trials and, in many cases, a course of psychotherapy, before TMS will be authorized. This step-therapy ("fail-first") requirement is designed to ensure TMS is used after conservative treatments have been attempted — but it becomes an improper barrier when your records already document an adequate trial history that was not included in the original submission, or when required steps are clinically inappropriate for your situation.

## Why This Denial Is Appealable

Step-therapy denials for TMS are overturned when: (a) your chart already documents the required number and type of prior treatment trials — with adequate duration and dose escalation — and that evidence was missing from or unclear in the original submission, (b) one or more required prior steps are contraindicated or clinically inappropriate given your specific history, or (c) you have a documented intolerance or adverse reaction to required prior treatments that made adequate trials impossible. Your treating clinician's structured letter, paired with the actual chart records, is the core of the appeal.

## Federal Appeal Framework

• Internal appeal: File within 180 days of the denial. Aetna must decide within 30 days (pre-service) or 60 days (post-service).
• State step-therapy exception laws: If your plan is a fully-insured state-regulated plan, check your state's step-therapy exception statute — many require exceptions when prior steps have been tried, are contraindicated, or would cause irreversible harm.
• External review (ACA §2719 / ERISA §503): After exhausting internal review, request independent external review within approximately four months. Step-therapy denials are frequently reversed at external review when the trial history is well-documented.
• Expedited review: Available when delay would seriously jeopardize health.

## Documentation to Gather

1. Prior medication trial records: For every antidepressant or other medication Aetna's policy requires, provide: the medication name, start and end dates, prescriber, dose-escalation history, and documented reason for discontinuation (inadequate response, intolerance, or adverse effect). Pull this from pharmacy records and clinical notes. 2. Psychotherapy records (if required): Documentation of any required psychotherapy trial, including modality, number of sessions, dates, and clinical outcome. 3. Step-bypass justification (if applicable): If a required step is contraindicated or clinically inappropriate, obtain a letter from your treating clinician explaining the clinical basis — specific to your history, not based on general population data. 4. Prescriber medical-necessity letter: A structured letter addressing Aetna's step-therapy criteria sequentially, confirming each required prior step has been completed or is not appropriate, and recommending TMS with reference to the applicable specialty guideline organization. 5. Diagnosis and severity records: Current clinical documentation confirming diagnosis and severity.

## Criteria-Mapping Structure

Download Aetna's Clinical Policy Bulletin for TMS from Aetna.com. Identify every step-therapy criterion — including the number and type of required prior trials and any duration or dose-escalation requirements. Build a table: (1) Aetna Step-Therapy Requirement, (2) How Your Record Satisfies It, (3) Supporting Document/Date. Attach the pharmacy records and clinical notes directly as exhibits. Reviewers can then verify completion of each required step without searching unstructured records.