PSG In Lab denied for failing step therapy by Aetna?

Aetna's specific coverage criteria for psg in lab 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 Applies Step Therapy to In-Lab PSG

Step-therapy denials for in-lab polysomnography typically reflect Aetna's requirement that a less resource-intensive diagnostic pathway — most commonly a home sleep apnea test (HSAT) — be attempted before an attended in-lab study is authorized. The insurer's clinical policy generally requires that a home study either be completed or be documented as clinically inappropriate before in-lab PSG will be covered. Denials in this category are very frequently overturned when the clinical record shows either that a home study was already attempted, or that a home study is clinically contraindicated or likely to be inadequate for the patient's specific situation.

## Your Federal Appeal Rights

• Internal appeal: ACA §2719 and ERISA §503 guarantee a full-and-fair review. Aetna must identify the specific step-therapy criterion that was not met and allow you to respond.
• Step-therapy exception statutes: Many states have enacted step-therapy exception laws requiring insurers to grant exceptions when the required step is clinically inappropriate. Check whether your state's law applies to your plan.
• External review: Independent external review is available after internal exhaustion, typically within approximately four months of final denial.
• Expedited track: Available for urgent clinical situations.

## Documentation to Gather

1. Home sleep test records — if a home study was already performed, include the full report, date, and outcome. If it was inconclusive or technically inadequate, document that specifically. 2. Clinical contraindication documentation — if a home study was not performed because it is clinically inappropriate for your condition, your physician must document why. Common accepted reasons include significant comorbidities that make unattended home testing unreliable. 3. Prescriber letter addressing the step-therapy requirement — your physician should explicitly state either (a) the required step was completed, or (b) the required step is clinically inappropriate and explain why, citing the applicable AASM guideline. 4. Applicable guideline reference — cite the relevant American Academy of Sleep Medicine criteria that support bypassing home testing in your clinical scenario.

## Criteria-Mapping Structure

Obtain Aetna's step-therapy policy for sleep testing and map each step:

| Aetna Step-Therapy Requirement | Your Chart Evidence or Exception Basis | |---|---| | Prior home sleep test required | [Date of home test or documented clinical contraindication] | | [Additional criteria] | [Chart note, date, and clinician] |

## Next Step

If a home study was already done, gather that report immediately — this is often sufficient to resolve the denial at the internal appeal stage without further escalation. If no home study was done, your physician's clinical justification for bypassing that step is the centerpiece of your appeal.