How to appeal a Premera Blue Cross myasthenia gravis & cidp denial

The framework that applies to your appeal

Federal law gives you the right to a full and fair internal appeal, then an external review by an independent third party.

Premera Blue Cross-specific note: BCBS licensee for Washington and Alaska (~2.4M members). Express Scripts PBM. WA OIC oversight. WA has strong mental health parity enforcement and surprise-billing protections that pre-date federal NSA.

What Premera Blue Cross's policy requires for myasthenia gravis & cidp

Cited policy: BCBS Vyvgart Hytrulo (efgartigimod alfa + hyaluronidase) SC for CIDP

Diagnosis of CIDP per EAN/PNS 2021 criteria (definite or probable) confirmed by neuromuscular specialist. ICD-10 G61.81. Documented inadequate response, intolerance, or chronic dependence on standard CIDP therapy (IVIG, corticosteroids, or PLEX). INCAT or I-RODS disability documented. Reauth at 6 mo with disability scoring response.

How Premera Blue Cross denies myasthenia gravis & cidp — and how to counter it

Where Premera Blue Cross pushes back: 1) Must fail IVIG, steroids, AND PLEX before Vyvgart; 2) IVIG-responsive patients should continue IVIG indefinitely; 3) CIDP diagnosis questioned without nerve biopsy.

Counter-arguments that hold up: ADHERE (Allen Lancet Neurol 2024) — Phase 3 Vyvgart Hytrulo SC in CIDP enrolled BOTH IVIG-refractory AND IVIG-responsive patients on chronic IVIG dependence; significant relapse-risk reduction. Supported FDA approval Jun 21, 2024 — label is CIDP, no step-therapy requirement. EAN/PNS 2021 (Van den Bergh JPNS 2021) lists IVIG/steroids/PLEX as PARALLEL first-line, NOT sequential. Chronic IVIG dependence is itself an indication. EAN/PNS 2021 diagnostic criteria do NOT require nerve biopsy — definite/probable based on clinical + electrodiagnostic features (NCS demyelinating: prolonged distal motor latency, conduction velocity slowing, partial conduction block, prolonged F-waves) with supportive CSF cytoalbuminologic dissociation.

What Premera Blue Cross typically denies for myasthenia gravis & cidp

Across Premera Blue Cross's commercial and Medicare books, denials cluster around a small number of patterns. For myasthenia gravis & cidp, expect:

• WA-specific mental health parity violations
• Step therapy via Express Scripts
• Out-of-network reductions
• Specialty drug prior auth

Treatments most often denied in this category

These are the myasthenia gravis & cidp treatments most often flagged for prior auth, step therapy, or medical necessity review:

• Soliris (MG)
• Ultomiris (MG)
• Vyvgart IV (MG)
• Vyvgart Hytrulo (MG)
• Rystiggo (MG)
• Zilbrysq (MG)

How to submit the appeal to Premera Blue Cross

1. Read the denial letter — note the exact denial reason code and the appeal deadline (180 days from the date on the letter).
2. Gather supporting documentation: physician letter of medical necessity, relevant clinical notes, peer-reviewed citations supporting the treatment for your indication, and the policy or coverage document Premera Blue Cross cited in the denial.
3. File the appeal through Premera Blue Cross's portal (members: https://www.premera.com ; providers: https://www.premera.com/wa/provider). Standard decision returns within 30 days; expedited urgent appeals return within 72 hours.
4. If denied again, request external review by an independent reviewer within 4 months of the final internal denial. In WA, the state insurance department coordinates external review for fully-insured plans; ERISA self-funded plans use a federal external review through DOL/EBSA.

Clinician or prior-auth team handling this on the practice side? See Premera Blue Cross's prior-authorization criteria by drug: Premera Blue Cross PA criteria on ApprovalHelp.