Crenessity CAH denied as not medically necessary by Blue Cross Blue Shield?

Blue Cross Blue Shield's specific coverage criteria for crenessity cah 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 Denies Crenessity for CAH as Not Medically Necessary — and Why You Can Appeal

Blue Cross Blue Shield's medical-necessity denial for Crenessity (tildacerfont) in congenital adrenal hyperplasia typically means the plan's reviewer found that the submitted documentation did not establish that the patient meets all of the plan's coverage criteria — which may include requirements around diagnosis confirmation, disease severity, prior treatment history, and specialist involvement. This denial is not a judgment that the drug never works; it is a documentation gap that can often be remedied on appeal.

CAH is a rare, lifelong condition. Inadequate disease control carries significant clinical consequences. An appeal that presents a complete, well-organized clinical record — mapping every plan criterion to a specific chart finding — has a genuine chance of success.

## Federal Appeal Rights

• ACA §2719 external review: After exhausting internal appeals, you may request independent external review by a specialist reviewer. The window is approximately four months from the final internal denial — confirm the exact date on your denial letter. Expedited review is available for urgent cases.
• ERISA §503: Employer-plan members are entitled to a full-and-fair review with a written explanation of each specific reason the documentation was found insufficient.

## Concrete Appeal Steps

1. Obtain BCBS's medical policy for Crenessity. This document lists every criterion the plan requires. Build your appeal around it. 2. Confirm and document the diagnosis. Include the genetic or biochemical confirmation of CAH (classic or non-classic), the diagnosing provider's notes, and the endocrinologist's current assessment. 3. Document treatment history with dates and outcomes. List all prior and current therapies, with start dates, doses as prescribed (from the chart), and the clinical response or lack thereof. Objective markers from the chart — not invented — matter here. 4. Assess and document disease severity. Include the most recent relevant lab results and clinical notes describing disease burden, symptoms, and functional impact. 5. Obtain a detailed prescriber medical-necessity letter that references each BCBS criterion by name and answers it with a specific chart fact. 6. File the internal appeal with a criteria-mapping table as the cover page.

## Criteria-Mapping Structure

For each requirement in BCBS's CAH/Crenessity policy, complete one row:

| BCBS Coverage Criterion | Supporting Documentation | |---|---| | Confirmed CAH diagnosis | Genetic/biochemical confirmation, endocrinology notes | | Specialist management | Endocrinologist name, practice, and clinical notes | | Prior therapy trial(s) with outcomes | Medication list with dates and chart-documented response | | Disease not adequately controlled | Most recent relevant lab results and clinical notes | | Prescriber attestation of medical necessity | Prescriber letter addressing each criterion |

Verify the exact current criteria in BCBS's published medical policy for Crenessity before drafting your appeal letter — policy criteria are updated periodically and the submitted version must match the current document.