Anthem Blue Cross Blue Shield is one of the largest health insurers in the country, covering millions of members across more than a dozen states. If Anthem has denied your claim, you are not alone, and you are not out of options. Understanding how do I appeal an Anthem denied claim is the first step toward getting the coverage you paid for and the care you need.
Anthem denies claims for many reasons, from missing prior authorization to disputes over medical necessity. Whatever the reason, federal and state laws guarantee your right to challenge that decision. This guide covers the entire process specific to Anthem, from reviewing your denial to filing an external review.
Understanding Your Anthem Denial Letter
When Anthem denies a claim, it sends an Explanation of Benefits (EOB) or a formal denial letter that outlines the reason, the plan provision it relied on, and instructions for how to appeal. Read this document word by word. The denial code and narrative explanation tell you exactly what went wrong and what evidence you need to build your appeal.
Common Anthem denial reasons include services not covered under your plan, lack of prior authorization or referral, determination that a service was not medically necessary, use of an out-of-network provider without authorization, and billing or coding errors. Each category requires a different appeal strategy.
Note the deadline printed on your denial letter. Anthem typically provides 180 days to file an internal appeal, but the window may be shorter for certain plan types. Mark this date on your calendar immediately.
Step 1: Contact Anthem Member Services
Before drafting a formal appeal, call the member services number on the back of your Anthem ID card. Ask the representative to explain the denial in plain language and confirm the appeal deadline and filing instructions. Sometimes a denial is the result of a simple administrative error, such as a wrong code or missing information, and can be resolved with a corrected claim submission rather than a formal appeal.
During the call, ask whether Anthem offers a peer-to-peer review option for your claim. A peer-to-peer review allows your treating physician to speak directly with Anthem’s medical reviewer, and it can sometimes resolve medical necessity disputes without a written appeal. Document the call by noting the date, time, representative’s name, and reference number.
Step 2: File an Internal Appeal With Anthem
If a phone call does not resolve the issue, your next move is a formal written internal appeal. You can submit your appeal by mail, fax, or through the Anthem member portal online. Submitting in writing ensures a clear record and is strongly recommended.
Your appeal letter should include your full name, member ID, group number if applicable, claim number, date of service, and a clear statement that you are appealing the denial. Address each denial reason individually and present supporting evidence for each point.
Attach your physician’s letter of medical necessity, relevant medical records, clinical guidelines supporting the treatment, and any other documentation that demonstrates the service should be covered. If the denial was based on a coding error, include the corrected codes and a note from your provider’s billing department.
Anthem must acknowledge receipt of your appeal and issue a decision within 30 days for pre-service claims and 60 days for post-service claims. For urgent pre-service appeals, Anthem must respond within 72 hours.
Step 3: Second-Level Internal Appeal
Some Anthem plans offer a second level of internal appeal if the first is denied. Check your plan documents or call member services to confirm whether this option is available. If it is, the second-level review must be conducted by a different reviewer who was not involved in the original denial or the first appeal.
Use the second appeal to submit any additional evidence you have gathered since the first appeal. Updated medical records, new test results, or a revised letter of medical necessity from a specialist can strengthen your case significantly.
Step 4: Request an External Review
If Anthem upholds the denial after your internal appeal or appeals, you have the right to an external review. Under the ACA, this is a mandatory process for all non-grandfathered health plans. The external review is conducted by an Independent Review Organization (IRO) that has no affiliation with Anthem.
You typically have four months from the date of Anthem’s final internal appeal denial to request an external review. The IRO reviews the medical evidence independently and issues a binding decision. If the IRO overturns the denial, Anthem must cover the claim.
According to data from state insurance departments, external reviews overturn insurer denials in a significant percentage of cases, particularly for medical necessity disputes. This step is well worth pursuing. Your state insurance department can assist you with the external review process and may have an online portal for filing.
Anthem-Specific Tips for a Stronger Appeal
Knowing how do I appeal an Anthem denied claim effectively means understanding Anthem’s internal processes. Anthem uses clinical guidelines from organizations like MCG (formerly Milliman Care Guidelines) and Hayes to evaluate medical necessity. If you can identify which guideline Anthem applied and demonstrate that your situation meets or exceeds the criteria, your appeal becomes much harder for Anthem to deny.
Request a copy of the specific clinical guideline Anthem used. You are entitled to this information under ACA regulations. Have your physician review the guideline and explain in writing how your medical situation satisfies the criteria, or why the guideline does not apply to your unique clinical circumstances.
Anthem also has special procedures for certain categories of care, including behavioral health, substance use treatment, and pharmacy benefits. If your denial falls into one of these categories, make sure you are following the correct appeal pathway, as it may differ from the standard medical appeal process.
State-Specific Protections for Anthem Members
Because Anthem operates in multiple states under various Blue Cross Blue Shield affiliates, the consumer protections available to you depend on your state of residence. States like California, New York, Georgia, and Virginia each have their own insurance regulations that may provide additional appeal rights beyond the federal minimum.
For example, California’s Department of Managed Health Care (DMHC) offers an independent medical review process for HMO members that can be faster than the standard external review. New York’s Department of Financial Services has a robust consumer assistance program that actively helps residents with insurance disputes.
Contact your state insurance department or visit the NAIC website to find your state’s consumer protection resources. Filing a complaint with your state regulator, in addition to pursuing your formal appeal, can add regulatory pressure on Anthem to reconsider.
Frequently Asked Questions
How do I file an appeal with Anthem online?
Log in to your Anthem member account at anthem.com. Navigate to the Claims section, find the denied claim, and look for the appeal option. You can submit your appeal letter and supporting documents electronically. You can also submit by mail or fax using the address on your denial letter.
How long does Anthem take to process an appeal?
Anthem must decide on pre-service appeals within 30 days and post-service appeals within 60 days. Urgent pre-service appeals require a response within 72 hours. If Anthem needs more time, it must notify you in writing and explain the reason for the extension.
What if Anthem denies my appeal twice?
After exhausting internal appeals, request an external review by an Independent Review Organization. The external review decision is binding on Anthem. You can also file a complaint with your state insurance department for additional regulatory scrutiny.
Can I appeal an Anthem denial for an out-of-network provider?
Yes. If you believe the out-of-network services should have been covered, such as when no in-network provider was available or in an emergency, you have the right to appeal. Include evidence of the circumstances that required out-of-network care.
Do Not Accept a Denial Without a Fight
Understanding how do I appeal an Anthem denied claim gives you the tools to challenge unfair denials and hold your insurer accountable. Gather your evidence, meet your deadlines, and escalate through every available level of review. For related guidance, see our articles on how to write an appeal letter, what to do when your insurance claim is denied, and our comprehensive healthcare policy guide.