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Anthem Blue Cross Blue Shield (Elevance) Letter of Medical Necessity Guide

How to write an LMN and overturn a prior authorization denial with Anthem Blue Cross Blue Shield (Elevance). Includes denial reasons, turnaround times, appeals address, and clinician tips.

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Quick Facts

  • Avg Turnaround: 30 days standard
  • Appeals Address: Anthem Grievance and Appeals, PO Box 27401, Richmond, VA 23279
  • Provider Portal: https://www.availity.com/

Why Anthem Denies Prior Authorizations

  1. 1. Not medically necessary per clinical UM guideline
  2. 2. Experimental/investigational
  3. 3. Failure to meet criteria

Clinician Tips for Anthem

  • ✓ Anthem uses AIM Specialty Health for high-cost specialty
  • ✓ Reference Clinical UM Guideline (CG-) number
  • ✓ Submit via Availity portal

Anthem operates in 14 states under the Elevance umbrella.

Anthem Prior Authorization FAQ

Why does Anthem deny prior authorizations?

The most common Anthem denial reasons are: Not medically necessary per clinical UM guideline; Experimental/investigational; Failure to meet criteria.

How long does Anthem take to review a prior authorization?

Anthem typically responds in 30 days standard.

What should a Letter of Medical Necessity for Anthem include?

An LMN for Anthem Blue Cross Blue Shield (Elevance) should reference the specific medical policy or coverage bulletin, document failed first-line therapies with dates, include current labs and ICD-10 codes, and cite supporting clinical guidelines. Anthem operates in 14 states under the Elevance umbrella.