Npwt denied for missing prior authorization by Aetna?

Aetna's specific coverage criteria for npwt 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 Denied NPWT for "Prior Authorization Required" — and How to Appeal

Negative pressure wound therapy (NPWT) is on Aetna's prior authorization list for most outpatient and home settings. A denial for "prior authorization required" typically means the service was rendered or ordered before authorization was obtained, or the authorization request was submitted but lacked the clinical information Aetna requires to approve it. This is one of the most commonly appealed and overturned denial types because the underlying medical need is often unambiguous — it is primarily a process issue.

## Your Federal Appeal Rights

• Internal appeal (ACA §2719 / ERISA §503): You have a full-and-fair review right. File within the deadline printed on your denial notice.
• Retrospective / concurrent authorization appeal: If NPWT is ongoing, request concurrent authorization while the retrospective appeal is pending.
• External review: Available after the internal process is exhausted, generally within approximately four months of a final adverse determination.
• Expedited track: Available when wound deterioration or clinical urgency makes the standard timeline inappropriate.

## Concrete Appeal Steps

1. Obtain Aetna's current NPWT prior authorization criteria from their provider portal or by calling the number on your denial letter. 2. Identify exactly which clinical criteria were not met or not submitted in the original request. 3. Have the prescribing wound care provider complete a detailed prior-auth appeal letter addressing each criterion explicitly. 4. Attach all supporting clinical documentation and resubmit as a formal internal appeal.

## Documentation to Gather

• Diagnosis confirmation: Wound type, etiology, and ICD-10 code confirmed in the medical record.
• Prior treatment history: All conservative wound care tried before NPWT, including dates and documented outcomes.
• Clinical severity: Chart notes describing wound characteristics, progression, and risk of complications without NPWT.
• Order and clinical notes: The treating provider's order for NPWT with clinical rationale.
• Prescriber medical-necessity letter: A detailed letter explaining why NPWT is the appropriate intervention for this patient at this time.

## Criteria-Mapping Structure

Obtain Aetna's published prior-authorization criteria for NPWT. Create a table with each requirement in the left column and the specific chart evidence satisfying it in the right column — wound type documented on [date], failed conservative treatment documented on [date], etc. Attach this mapping as the cover page of your appeal. This format forces a line-by-line review and leaves no criterion unaddressed.