Aetna (CVS Health) Medicare appeal guide

Why Aetna (CVS Health) denies medicare

Aetna, owned by CVS Health since 2018, runs commercial group plans, Medicare Advantage, and a large pharmacy benefit footprint via Caremark. GLP-1, specialty drug, and behavioral health denials are the highest-volume categories.

For medicare specifically: Medicare denials follow a federally-defined 5-level appeal process. Most beneficiaries stop at level 1. The higher levels — particularly the Independent Review Entity and ALJ — reverse a meaningful share of cases.

The Aetna (CVS Health) appeal process

Appeal levels: Internal level 1 (30 days standard / 72h urgent), then external IRO review (45 days standard).

Timing: 180 days from denial for internal appeal; 60 days from final internal denial for external review.

What we know about Aetna (CVS Health): Aetna's internal appeals respond well to peer-to-peer review requests filed alongside the written appeal.

Common Aetna (CVS Health) denial patterns for medicare

GLP-1 / Wegovy denials citing BMI. Aetna denies most weight-loss GLP-1 prescriptions citing BMI thresholds or 'lifestyle modification first' criteria. Switching the prescription path to a T2D-approved molecule (Ozempic, Mounjaro) when comorbidities exist often produces a same-week reversal.
Caremark formulary denials. Aetna's pharmacy benefit (Caremark) issues formulary denials separate from medical benefit denials. Each requires its own appeal track — confusing the two costs weeks.
Internal appeal then external review. Aetna's first appeal is internal and must be filed within 180 days. After internal denial, an external review by an Independent Review Organization (IRO) is available within 60 days — a separately strong reversal lane.

The reversal pathway for medicare appeals

Successful medicare appeals against Aetna (CVS Health) typically require:

Procedural-rights anchor. Every Aetna (CVS Health) denial triggers ERISA § 503 or 45 C.F.R. § 147.136 procedural rights. The cover letter must invoke these in the opening paragraph to lock the timeline and force criteria disclosure.
Criteria-disclosure demand. Aetna (CVS Health) (like all major insurers) frequently denies on "not medically necessary" without disclosing the clinical criteria applied. Federal law requires they disclose on request — and once they do, the criteria become the rebuttal map.
Treating-provider attestation. A letter from the treating physician explaining medical necessity in the specific terms the carrier's policy uses. This is the single strongest evidentiary element.
Peer-reviewed citations. At least two journal citations (NEJM, JAMA, Lancet, etc.) or specialty-society guidelines (NCCN, AASM, ACR Appropriateness Criteria) supporting the requested service for the patient's clinical profile.
Plan-language anchor. The specific policy section that controls the determination, quoted verbatim with policy section number.
Requested action. Clear, specific request for reversal — not a general "please reconsider."

What Apellica does for Aetna (CVS Health) medicare appeals

We file appeals against Aetna (CVS Health) specifically configured to its internal review process. Every appeal includes the criteria-disclosure demand, the procedural-rights anchor, treating-provider attestation language, and the specific peer-reviewed citations relevant to the denied service.

Cost: $0 upfront. We work on contingency for Aetna (CVS Health) appeals — if the appeal succeeds, we collect a percentage of the recovered claim value. If it fails, you owe nothing.

Start your Aetna (CVS Health) medicare appeal

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How to appeal a Aetna (CVS Health) medicare denial