Coverage Exception denied for missing prior authorization by Blue Cross Blue Shield?

Blue Cross Blue Shield's specific coverage criteria for coverage exception 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 BCBS Denied Your Coverage Exception: Prior Authorization Required

A prior-authorization (PA) denial means BCBS requires advance approval before covering the requested treatment, and that approval was either not sought before the treatment was prescribed or administered, or was sought and denied. PA requirements exist because BCBS has identified certain treatments as warranting clinical review before coverage is confirmed.

If the PA was denied on clinical grounds, the denial is fully appealable and the process below applies directly. If the PA was simply not obtained in advance (administrative miss), you may still have appeal options, particularly if you can demonstrate that delay would have harmed your health or that you lacked adequate notice of the requirement.

## Your Federal Appeal Rights

• Internal appeal (ACA §2719 / ERISA §503): You are entitled to a full-and-fair internal review. Submit a written appeal within the timeframe on your denial notice — typically 180 days.
• External review: After exhausting the internal appeal, or if BCBS misses a decision deadline, you may request independent external review. The window is generally approximately four months from the final internal denial. The IRO decision binds the plan.
• Expedited review: For urgent clinical situations, expedited internal review (typically 72-hour turnaround) and concurrent expedited external review are available.

## How to Build Your Appeal

1. Obtain the specific PA criteria BCBS applied. Request the published medical or coverage policy that governs prior authorization for this treatment. You are entitled to receive it on request. Every criterion in that policy is a potential argument point.

2. Build a criterion-by-criterion response. Copy each PA criterion into your appeal document. For each, provide the exact supporting fact from your medical record. This structure directly mirrors the plan's review process.

3. Get a prescriber medical-necessity letter keyed to the PA criteria. The letter should address: confirmed diagnosis with objective supporting documentation; treatment history and prior step-therapy with dates and outcomes; clinical severity as documented in the chart; and why the requested treatment is the appropriate clinical choice. Generic letters are far less effective than ones that speak directly to each PA criterion.

4. Compile supporting documentation. Include relevant visit notes, specialist consultations, labs or imaging, pharmacy records, and any prior PA submissions or clinical notes related to the denial.

5. Reference applicable clinical guidelines by organization. Where the treatment is supported by specialty society guidance (e.g., applicable NCCN, ADA, ACC guideline), your prescriber's letter should note this, referencing the organization without asserting specific numerical thresholds.

## Timeline

• File the internal appeal promptly — the window is stated on your denial notice.
• After a final internal denial (or a missed plan deadline), request external review within approximately four months.

DenialHelp can help you structure a PA appeal that maps your chart documentation directly against BCBS's authorization criteria.