Anthem Denied Chiropractic Care? Here's How to Appeal

iropractic-claims">Why Anthem Denies Chiropractic Claims

Anthem, the Elevance Health subsidiary administering Blue Cross Blue Shield plans in 14 states, is one of the most commonly cited insurers in chiropractic care denial complaints. Whether Anthem cut off your visits mid-treatment, denied a referral entirely, or classified your ongoing care as "maintenance" rather than medically necessary, you have real options to fight back. Understanding exactly how Anthem evaluates chiropractic claims is the critical first step.

Anthem applies a two-part test when evaluating chiropractic claims: whether the treatment is medically necessary and whether it is therapeutic (covered) rather than maintenance (not covered). These two criteria are the source of most chiropractic denials.

Under Anthem's Clinical Criteria — evaluated through its IndiGO review system — chiropractic care is considered medically necessary only when there is documented evidence of a condition expected to meaningfully improve with skilled chiropractic treatment over a defined period. Anthem looks for objective functional improvement: measurable changes in range of motion, pain scores using validated tools, or documented functional status changes at regular intervals. If your chiropractor's notes don't document this improvement clearly, Anthem's utilization reviewers will classify your care as plateau-level and deny further coverage.

The maintenance vs. therapeutic distinction is particularly aggressive in Anthem's policies. Anthem's medical policies define maintenance care as treatment designed to prevent deterioration or preserve function that has already been achieved — and Anthem explicitly excludes maintenance care from coverage under most plans. After a set number of visits (often as few as 12–20 per year, depending on your specific plan), Anthem requests additional documentation. If your provider cannot demonstrate continued measurable progress toward specific functional goals, Anthem will reclassify remaining visits as maintenance and deny coverage — often leaving members with unexpected bills for visits they believed were covered.

Your Legal Rights

• ACA Essential Health Benefits — Chiropractic care for musculoskeletal conditions falls under ambulatory patient services EHBs on ACA-compliant plans. Plans cannot exclude all chiropractic coverage.
• ERISA — For employer-sponsored plans, ERISA requires Anthem to provide a specific written explanation of the denial, the clinical criteria applied, and access to the complete claims file. You have the right to a full and fair review on appeal with federal court access if internal remedies fail.
• IndiGO criteria access — Request Anthem's Clinical Criteria Document for chiropractic care (or the MCG guidelines Anthem cites for your specific diagnosis). This document specifies exactly what documentation Anthem requires, enabling a targeted appeal.
• External Independent Review: Complete Guide" class="auto-link">External review rights — After exhausting internal appeals, you are entitled to free external review. Chiropractic denials on "not medically necessary" grounds are frequently overturned when supporting documentation is strong.
• State law protections — Connecticut and New York have state laws providing additional consumer protections for chiropractic access. California members can use the DMHC's Independent Medical Review process.

Step-by-Step Appeal Process

Step 1: Obtain the Denial Letter and Clinical Basis

Your denial letter must state the specific clinical reason and the Anthem Clinical Criteria or MCG guideline cited. Request a copy of the relevant Clinical Criteria Document from Anthem. Note whether the denial is for "not medically necessary" or specifically for "maintenance care."

Step 2: File a First-Level Internal Appeal (Within 180 Days)

Write a formal appeal letter. Include a detailed letter of medical necessity from your chiropractor that documents:

• Your specific diagnosis (ICD-10 code, e.g., M54.5 for low back pain, M54.2 for cervicalgia, M51.1 for lumbar disc herniation)
• Objective functional limitations you're experiencing at baseline
• A treatment plan with concrete, time-limited goals
• Objective progress measurements at each visit (ROM measurements, pain scale scores, functional outcome tools such as the Oswestry Disability Index or NDI)
• Why maximum therapeutic benefit has not yet been reached

Subjective notes like "patient reports improvement" are not sufficient — Anthem needs objective, measurable data.

Step 3: Expedite if Your Condition Is Acute or Worsening

If delaying care could cause serious harm or significant functional decline, request an expedited appeal. Anthem must respond within 72 hours.

Step 4: File a Second-Level Internal Appeal

If the first appeal is denied, escalate to a second-level review. Request that the review be conducted by a physician with musculoskeletal specialty experience — not a general internist.

Step 5: Request External IRO Review

Once internal appeals are exhausted, request external review. The independent reviewer evaluates whether Anthem's criteria were applied appropriately to your clinical facts. Chiropractic denials overturned at this stage when the provider's documentation demonstrates objective, ongoing therapeutic benefit.

Step 6: File a State Insurance Department Complaint

File a complaint with your state Department of Insurance if Anthem failed to follow proper timelines or applied criteria that conflict with accepted clinical standards.

Documentation Checklist

• ICD-10 diagnosis code with clinical documentation (e.g., M54.5, M51.1, M54.2)
• Initial evaluation documenting baseline ROM measurements, pain scores (NRS or VAS), and functional status
• Progress notes at each visit with objective measurements — ROM, pain scale, functional outcome tools
• Oswestry Disability Index (ODI) or Neck Disability Index (NDI) scores at baseline and current
• Treatment plan with specific, time-limited goals and an anticipated end date
• Documentation that maximum therapeutic benefit has not been reached and why
• Imaging (X-ray or MRI) corroborating the diagnosis if available
• Peer-reviewed literature or clinical guidelines (ACA, CCGPP, Cochrane reviews) supporting chiropractic for this specific condition
• Anthem's Clinical Criteria Document — to build a point-by-point rebuttal

State-Specific Notes

Anthem's chiropractic coverage varies significantly by state and plan type:

• California: Anthem Blue Cross members have access to the DMHC's Independent Medical Review, which has historically overturned chiropractic denials at a significant rate
• Connecticut and New York: State laws provide additional consumer protections for chiropractic access and external review rights
• Indiana and Ohio: Large employer group plan markets with predominantly ERISA self-funded plans — state law protections are limited, but federal IRO rights remain
• Plan type matters: Fully insured plans are subject to state law; self-funded ERISA plans are governed by federal law. Knowing your plan type affects your escalation options.

Fight Back With ClaimBack

Anthem's chiropractic denials often succeed simply because members don't know how to document their cases in the clinical language Anthem's reviewers require. A denial based on "maintenance care" or "lack of medical necessity" is highly appealable — but only if your appeal directly addresses the specific criteria Anthem applied. The difference between a successful and unsuccessful appeal is often the presence of objective functional measurements (ROM, ODI scores) versus subjective provider notes. ClaimBack generates a professional appeal letter in 3 minutes, building the case in the clinical language that Anthem's IndiGO reviewers expect to see.

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Related Reading

• How to Write an Insurance Appeal Letter
• What Is Medical Necessity?
• Internal vs External Insurance Appeal