Hyperbaric Oxygen denied for failing step therapy by Aetna?

Aetna's specific coverage criteria for hyperbaric oxygen 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 for Hyperbaric Oxygen — and Why You Can Appeal

Aetna's step-therapy (also called "fail-first") denials for hyperbaric oxygen therapy (HBOT) reflect a coverage policy requirement that patients must first attempt, and fail to achieve adequate benefit from, one or more conventional wound-care or condition-specific treatments before HBOT will be authorized. This approach is common for procedures with significant per-session cost. The denial is not a permanent bar — it is a documentation hurdle. If your prescriber believes conventional treatments have already failed or are contraindicated for your specific situation, that clinical history is the foundation of a strong appeal.

## Your Federal Appeal Rights

Under ACA §2719, fully-insured plan members have a right to external review by an independent organization after exhausting internal appeals — generally within four months of a final internal denial. ERISA §503 provides self-funded plan members with a full-and-fair review right and access to federal courts if the plan's process is exhausted. Expedited (urgent) review is available when standard timelines would seriously jeopardize your health.

## Concrete Appeal Process

1. Obtain the denial in writing with the specific step-therapy criteria cited. 2. Pull Aetna's published HBOT coverage policy from Aetna's website and identify the exact prior-treatment steps required. 3. File a Level 1 internal appeal, submitting documentation of prior treatments tried (with dates and outcomes). 4. If denied, escalate to Level 2 (if available), then external review. 5. Ask your state insurance commissioner's office whether your state has a step-therapy override law — many states require exceptions when a patient has already tried and failed the required therapies or when the required therapy is clinically contraindicated.

## Documentation to Gather

• Prior treatment records: complete records of every conventional wound-care modality, antibiotic course, surgical debridement, or other required first-line treatment — with start dates, end dates, and documented clinical outcomes.
• Failure documentation: chart notes explicitly stating that a prior treatment did not achieve the expected response, wound measurements pre- and post-treatment, and any adverse events.
• Diagnosis confirmation: imaging, pathology, or specialist notes establishing the underlying condition requiring HBOT.
• Prescriber medical-necessity letter: a detailed letter explaining why the step-therapy sequence has been completed or why a specific step is clinically inappropriate for this patient, referencing the relevant guideline organization (e.g., the Undersea and Hyperbaric Medical Society) without fabricating specific numeric thresholds.

## Criteria-Mapping Structure

Copy each step-therapy requirement from Aetna's policy verbatim, then provide the corresponding record evidence:

| Step Required by Aetna Policy | Patient's Prior Treatment History | |---|---| | [Paste step from Aetna's policy] | [Dates tried, outcomes, relevant chart note reference] |

A well-structured criteria map compels the reviewing clinician to engage with the actual evidence rather than relying on the initial algorithmic denial.