Does Aetna Cover Farxiga?
The verdict
Covered on most plans
Yes — Aetna covers Farxiga for type 2 diabetes, heart failure, and CKD across commercial, ACA, Medicare, and Medicaid, managed through CVS Caremark. On Aetna's 2025 Medicare formulary, Farxiga is placed on Tier 2 (preferred brand) with a 30-tablet-per-month quantity cap — a notably favorable tier placement. The 2026 IRA negotiated Maximum Fair Price is $178.50 per 30-day supply. On commercial plans, a metformin-first step therapy is common (nationally 45.8% of commercial plans require step therapy — MMIT, Sept 11, 2025). Generic dapagliflozin is now available as a lower-cost alternative.
Coverage is set by your specific plan and formulary. This is a research summary — always confirm with Aetna using your member ID.
Key facts
On Aetna's Medicare formulary, Farxiga is placed on Tier 2 (preferred brand) with a 30-tablet-per-month quantity limit — a more favorable tier than the Tier 3 placement common at many other Part D sponsors.
Aetna Medicare Drug Formulary 2025
The 2026 IRA Maximum Fair Price for Farxiga is $178.50 per 30-day supply — a 68% reduction from the prior list price of approximately $556; all Aetna Part D plans must apply this price.
CMS Medicare Drug Price Negotiation Program, 2026 MFP
Nationally 45.8% of commercial plans require step therapy (metformin-first) for Farxiga — the highest commercial step-therapy rate among SGLT2 inhibitors in this drug class (MMIT, as of Sept 11, 2025).
MMIT via GoodRx (as of Sept 11, 2025)
Medicare vs. commercial coverage
Whether Aetna covers Farxiga depends heavily on which kind of plan you hold. They follow completely different rules — here's each one, side by side.
Medicare
Part D & Advantage plans
On Aetna's 2025 Medicare formulary, Farxiga is a Tier 2 preferred brand with a 30-tablet-per-month quantity limit. This is a more favorable tier than the Tier 3 placement common at other Part D sponsors, but the 30-tablet-per-month quantity cap is important: if your prescription is for more than 30 tablets (for example, for a split-dose schedule or a 90-day supply fill), you may need to coordinate with your prescriber to stay within the limit. Prior authorization for Farxiga on Medicare is essentially nil — nationally only 0.2% of Medicare plans require PA and 0.3% require step therapy (MMIT, as of Sept 11, 2025). As a Part D sponsor, Aetna must apply the IRA negotiated Maximum Fair Price of $178.50 per 30-day supply, effective January 1, 2026 — a 68% reduction from the prior list price of approximately $556. The 2026 Part D $2,100 annual out-of-pocket cap limits total exposure. Medicare beneficiaries cannot use the AstraZeneca commercial copay card; LIS/Extra Help enrollees pay $0–$12.65 per month.
Commercial / Employer
Group & marketplace plans
Aetna's commercial and ACA plans, managed through CVS Caremark, cover Farxiga for its on-label indications — nationally 92.1% of commercial plans and 96.6% of ACA plans cover it (MMIT, Sept 11, 2025). Commercial step therapy is the key nuance: nationally 45.8% of commercial plans require a metformin-first step for Farxiga and 17.1% require prior authorization (MMIT, Sept 11, 2025). Aetna's commercial plans run on the CVS Caremark formulary; verify your specific plan's tier and whether step therapy applies. If step therapy is required, your prescriber should document prior metformin use at the maximum tolerated dose or a clinical contraindication (for example, renal impairment or intolerance). AstraZeneca's average commercial copay is approximately $26 per fill (manufacturer-reported, commercially insured only — not for government-insured). ACA plan coverage is also broadly available (MMIT ACA 96.6%). Aetna Better Health Medicaid covers Farxiga; metformin-first step therapy is common (nationally 25.4% step, 30.6% PA — MMIT, Sept 11, 2025). Generic dapagliflozin is available and may appear on a lower Caremark tier.
The 3 boxes you must tick to get approved
Commercial plans that will consider Farxiga require prior authorization. Check off what applies to you to see how close you are — this is a guide, not a guarantee of approval.
Meet all 3 and you have a documented case for approval. Missing any one is the most common reason requests are denied.
Your cost, three ways
What Farxiga actually costs you swings enormously depending on how it's covered. Here's the realistic range.
Paying cash
Approximately $400–$600 or more per 30-day supply at retail pharmacy for brand Farxiga (pharmacy-variable estimate). Generic dapagliflozin is available at substantially lower cash prices.
List price with no coverage — before any manufacturer savings card.
With coverage
Medicare Part D (Aetna Tier 2, 30-tablet/month cap): IRA Maximum Fair Price $178.50 per 30-day supply effective January 1, 2026; $2,100 annual out-of-pocket cap; LIS/Extra Help $0–$12.65 per month. Commercial: AstraZeneca average commercial copay approximately $26 per fill (manufacturer-reported, commercially insured only). Medicaid: $0–$10 typical. All figures are estimates — verify with your specific Aetna plan.
Typical monthly copay once prior authorization is approved.
All dollar figures are estimates. Your actual cost depends on your Aetna plan's tier structure, deductible status, and benefit phase. The AstraZeneca $26 figure is a manufacturer-reported average — not a guarantee. The MFP is a payer-side ceiling; your actual copay depends on whether your Aetna plan uses a fixed copay or coinsurance. The 30-tablet-per-month Medicare quantity limit is plan-specific — verify on the CVS Caremark or Aetna formulary. Medicare beneficiaries cannot use the AstraZeneca savings card. Confirm your cost-share on the Aetna drug list.
Check YOUR exact coverage in 3 steps
General answers only get you so far. Here's how to confirm your own plan's decision in a few minutes.
- 1
Look up Farxiga on the Aetna or CVS Caremark formulary tool
Visit Aetna.com or the CVS Caremark formulary search for your 2026 plan. Search for Farxiga or dapagliflozin to confirm the tier, any quantity limits (particularly the 30-tablet-per-month Medicare limit), step-therapy requirements, and estimated cost-share. Also check whether generic dapagliflozin is on a lower tier.
- 2
Have your prescriber document metformin history if on commercial or Medicaid
If you have an Aetna commercial or Medicaid plan, a metformin-first step-therapy requirement is common for Farxiga. Ask your prescriber to include documentation of prior metformin use (dose, duration, and reason for discontinuation or contraindication) with the prescription. This is the standard evidence needed to resolve most step-therapy coverage requests.
- 3
Call Aetna member services to confirm your tier, quantity limit, and deductible
Call the number on the back of your Aetna ID card. Ask: (1) Which tier is Farxiga or generic dapagliflozin on my plan? (2) Does a 30-tablet-per-month quantity limit apply to my Medicare plan? (3) Is prior authorization or step therapy required? (4) Has my annual deductible been met? Have your plan ID and Farxiga dosage ready to speed up the lookup.
Options if Aetna won't cover Farxiga
A denial isn't the end of the road. These are the paths people commonly explore next — discuss any of them with your prescriber.
Generic dapagliflozin
Generic dapagliflozin is now available and may appear on a lower CVS Caremark formulary tier than brand Farxiga, reducing your cost-share. Discuss with your prescriber whether switching to the generic is clinically appropriate for your indication.
Jardiance (empagliflozin)
Another SGLT2 inhibitor for T2D, heart failure, and CKD. No generic is currently available. The 2026 IRA negotiated price is $197 per 30-day supply. Aetna's tier placement for Jardiance may differ from Farxiga; verify on the Aetna formulary.
Metformin (generic)
First-line oral diabetes medication; Tier 1 at approximately $4 per month cash price. If Aetna's step therapy requires metformin first, your prescriber will document this before approving Farxiga.
These options are listed for information only — your own clinician decides what is appropriate for you.
❓Frequently Asked Questions
Yes — Aetna covers Farxiga for type 2 diabetes, heart failure, and CKD across commercial, ACA, Medicare, and Medicaid via CVS Caremark. On Aetna's Medicare formulary, Farxiga is placed on Tier 2 (preferred brand) with a 30-tablet-per-month quantity cap. On commercial plans, a metformin-first step therapy is common (45.8% of commercial plans nationally — MMIT, Sept 11, 2025). The 2026 IRA negotiated price is $178.50 per 30-day supply.
On Aetna's 2025 Medicare formulary, Farxiga is a Tier 2 preferred brand — a more favorable placement than the Tier 3 common at many other Part D sponsors. A 30-tablet-per-month quantity cap applies. Prior authorization is not expected on Medicare (nationally 0.2% of Medicare plans require PA for Farxiga — MMIT, Sept 11, 2025). The 2026 IRA negotiated Maximum Fair Price is $178.50 per 30-day supply. Confirm tier placement on the current Aetna formulary, as tiers may change year to year.
CMS negotiated a Farxiga Maximum Fair Price of $178.50 per 30-day supply, effective January 1, 2026 — a 68% reduction from the prior list price of approximately $556. All Aetna Part D plans must apply this price. However, the MFP is a payer-side ceiling — your actual copay depends on your Aetna plan's tier structure and whether the plan uses a fixed copay or coinsurance. The $2,100 annual Part D out-of-pocket cap protects against the highest costs.
On Aetna Medicare Part D, a metformin-first step is not expected — nationally 0.3% of Medicare plans require step therapy for Farxiga (MMIT, Sept 11, 2025). On Aetna commercial plans via CVS Caremark, metformin-first step therapy is common (45.8% of commercial plans nationally). Your prescriber can resolve this by documenting prior metformin use or a clinical contraindication. Verify your specific plan on the Aetna or Caremark formulary.
Yes — generic dapagliflozin is now available and should appear on Aetna's CVS Caremark formularies. Generics are typically placed on a lower tier than the brand, which can reduce your cost-share. Check whether generic dapagliflozin appears on your specific Aetna plan's formulary using the CVS Caremark drug lookup tool or by calling Aetna member services.
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Read moreThis content is for informational purposes only and does not constitute medical, financial, or insurance advice. Coverage rules, prior-authorization criteria, and copay amounts change frequently and vary by plan, formulary tier, and effective date — always verify current benefits directly with Aetna before making any decision. Consult a licensed healthcare provider and your plan administrator for guidance specific to your situation.