Aetna health insurance is medical coverage sold by Aetna, a CVS Health company, through four channels: individual and family plans on the Health Insurance Marketplace, employer-sponsored group plans, Medicare Advantage, and Medicaid. Every non-grandfathered Aetna plan on the individual and small-group market must meet federal minimum standards under the Affordable Care Act, which controls what’s covered, how much you can be asked to pay in a year, and the rights you have when a claim is denied.
How to Enroll in an Aetna Plan
The path to coverage depends on where you’re getting it.
Individual and Marketplace Plans
Individual and family plans bought through the Marketplace require enrollment during Open Enrollment, which runs November 1 through January 15.1HealthCare.gov. When Can You Get Health Insurance Outside that window you can only enroll if you have a qualifying life event such as marriage, a birth, or loss of other coverage, and you generally have 60 days from the event to pick a plan.2HealthCare.gov. Getting Health Coverage Outside Open Enrollment
Employer Plans
Employer-sponsored Aetna plans follow the employer’s own benefits cycle, typically in the fall. If you’re a new hire, your employer can impose a waiting period before coverage starts, but federal law caps that wait at 90 days.3eCFR. 45 CFR 147.116 – Prohibition on Waiting Periods That Exceed 90 Days
Medicare Advantage and Medicaid
To join an Aetna Medicare Advantage plan, you must already be enrolled in Medicare Part A and Part B and live in the plan’s service area.4Centers for Medicare & Medicaid Services. Medicare Advantage Fact Sheet Most people become Medicare-eligible at 65, though certain disabilities or end-stage renal disease can qualify you earlier.5U.S. Department of Health and Human Services. Whos Eligible for Medicare Medicaid eligibility is set by each state and turns on income and household size.
Keeping Aetna After You Leave a Job
If you lose employer Aetna coverage because of a layoff, resignation, or reduced hours, COBRA lets you stay on the same group plan for 18 months in most cases, or up to 36 months for events like divorce or a spouse’s death. The bill is steep: employers can charge up to 102% of the full group premium, meaning the employer’s share plus yours plus a 2% administrative fee. You have 60 days after coverage ends to elect COBRA, and dependents can enroll even if the former employee doesn’t.6U.S. Department of Labor. An Employees Guide to Health Benefits Under COBRA
What Aetna Plans Have to Cover
Every non-grandfathered individual and small-group Aetna plan covers ten categories of essential health benefits: doctor visits, hospital care, prescription drugs, pregnancy and newborn care, mental health and substance use treatment, rehabilitative services, lab work, preventive care, pediatric services including dental, and emergency care.7HealthCare.gov. Essential Health Benefits Large employer plans aren’t strictly bound to the same ten-category list but generally cover the same ground because of other federal rules.
Free Preventive Care
In-network preventive care is covered at zero cost-sharing. No copay, no coinsurance, no deductible for annual wellness visits, immunizations, cancer screenings, blood pressure checks, and cholesterol tests.8HealthCare.gov. Preventive Care Benefits for Adults Certain preventive medications are also $0, including generic statins for adults aged 40 to 75, all FDA-approved contraceptive methods, tobacco cessation drugs, and HIV pre-exposure prophylaxis. One catch worth knowing: the free-visit rule applies only when the visit is coded as preventive. If your doctor spots a problem and orders diagnostic tests, those tests can be billed under your plan’s regular cost-sharing.
Mental Health and Substance Use
Because these services are essential health benefits, every individual and small-group Aetna plan includes them. Federal parity rules mean the copays, visit limits, and prior authorization requirements for behavioral health can be no stricter than what the plan applies to comparable medical and surgical care.9Centers for Medicare & Medicaid Services. The Mental Health Parity and Addiction Equity Act
Prior Authorization
Some services need Aetna’s approval before the plan will pay. This usually applies to MRIs, CT scans, non-emergency surgeries, and specialty medications. Skip the approval when it’s required and Aetna can deny the claim entirely, leaving you responsible for the full bill. Your doctor’s office typically handles the request, but it’s worth confirming approval before any scheduled procedure. Emergency care never requires prior authorization.
What You Pay
Marketplace Aetna plans are sold in four metal tiers based on how costs are split between you and the insurer on average:
- Bronze plans pay about 60% of costs. Lowest premiums, highest deductibles.
- Silver plans pay about 70%. The only tier eligible for cost-sharing reductions if your income qualifies.
- Gold plans pay about 80%. Higher premiums, lower deductibles.
- Platinum plans pay about 90%. Highest premiums, lowest out-of-pocket costs when you use care.
Those percentages are averages across all covered services, not a promise for any single visit.10HealthCare.gov. Health Plan Categories Bronze, Silver, Gold, and Platinum
Most plans have a deductible you pay first, then split costs with Aetna through coinsurance, often 80/20. Many plans also use flat copays for routine services like office visits and generic drugs.11Aetna. Understanding Premiums, Deductibles, Coinsurance and Copays
Your Annual Cost Ceiling
Every ACA-compliant Aetna plan caps what you can be required to spend in a plan year. For 2026, the federal maximum out-of-pocket limit is $10,600 for individual coverage and $21,200 for a family plan.12HealthCare.gov. Out-of-Pocket Maximum Limit After you hit that ceiling, the plan covers 100% of covered services for the rest of the year. Premiums and out-of-network costs generally don’t count toward it.
HSA-Eligible Plans
Some Aetna plans are high-deductible health plans that pair higher deductibles with lower premiums and let you contribute to a Health Savings Account. For 2026, an HDHP must have an annual deductible of at least $1,700 for individual coverage or $3,400 for family, with out-of-pocket expenses capped at $8,500 individual and $17,000 family. HSA contribution limits for 2026 are $4,400 for self-only coverage and $8,750 for family coverage.13Internal Revenue Service. Rev. Proc. 2025-19 Contributions are tax-deductible, funds grow tax-free, and withdrawals for qualified medical expenses are tax-free. Balances roll over year to year.
A change worth knowing for 2026: under the One, Big, Beautiful Bill Act, bronze and catastrophic marketplace plans are now treated as HSA-compatible regardless of whether they hit the traditional HDHP deductible thresholds. The law also allows people enrolled in direct primary care arrangements to contribute to an HSA and use HSA funds for their membership fees.14Internal Revenue Service. Treasury, IRS Provide Guidance on New Tax Benefits for Health Savings Account Participants Under the One Big Beautiful Bill
Networks and Surprise Bills
Aetna contracts with providers who accept negotiated rates. In-network care is cheaper because the pricing is settled in advance. Out-of-network care costs more, and in some plan designs isn’t covered at all except in emergencies.
HMO plans generally limit coverage to in-network providers and require a primary care physician who coordinates specialist referrals. PPO plans allow direct access to specialists and cover out-of-network care at a higher cost to you.15HealthCare.gov. Health Insurance Plan and Network Types Network breadth varies by location, and rural areas tend to have fewer in-network options.
No Surprises Act Protections
You can’t be charged more than your in-network cost-sharing for emergency services, even if the hospital or doctor is out of network. The same protection applies when you receive care at an in-network facility from an out-of-network provider you didn’t choose, such as an anesthesiologist or radiologist assigned during a procedure.16U.S. Department of Labor. Avoid Surprise Healthcare Expenses How the No Surprises Act Can Help Any cost-sharing you pay for these protected services counts toward your in-network deductible and out-of-pocket maximum, and providers cannot ask you to waive these protections for ancillary services like pathology, radiology, or neonatology.
The CVS Connection
Because CVS Health owns Aetna, prescription benefits flow through CVS Caremark for both retail and mail-order fulfillment, and members can manage refills and home delivery through the Aetna Health app.17Aetna. Rx CVS Caremark Mail Service Pharmacy Many Aetna members can also visit MinuteClinic locations at reduced or zero cost-sharing for select covered services, seven days a week including evenings and weekends.18Aetna. MinuteClinic Services If you’re on a high-deductible plan, you’ll still need to meet your deductible before non-preventive MinuteClinic visits are covered at no cost, but the visit is billed at the negotiated contract rate instead of retail.
Appealing a Denied Claim
When Aetna processes a claim, you get an Explanation of Benefits showing what the plan paid, what you owe, and, if the claim was denied, why. You have the right to challenge any denial.
Internal Appeal
File within 180 days of the denial notice. Aetna must decide within 30 days for services you haven’t received yet and within 60 days for services already provided. For urgent situations, the answer must come within 72 hours.19HealthCare.gov. Internal Appeals You can add documentation, including physician statements and medical records.
Individual marketplace Aetna plans offer one level of internal appeal before you can escalate to external review.20eCFR. 45 CFR 147.136 – Internal Claims and Appeals and External Review Processes Employer group plans may offer a second internal level first.
External Review
If the internal appeal fails, you can ask an independent organization with no ties to Aetna to review the decision. You have four months from the final internal denial to file a written request. Standard reviews get a decision within 45 days; urgent ones within 72 hours.21HealthCare.gov. External Review Federal external reviews are free; state or contracted reviewers may charge a fee, capped at $25. You can appoint someone, including your doctor, to handle the review for you. An external reviewer can overturn Aetna’s decision outright.
When Coverage Can End
Aetna can’t drop you arbitrarily, but coverage can end in a few defined situations.
Missed Premiums
Marketplace members receiving Advance Premium Tax Credits get a 90-day grace period. In the first 30 days, Aetna keeps paying claims normally. In months two and three, the insurer can hold claims unpaid. Pay everything owed before the 90 days end and those held claims get processed. Don’t pay, and the policy terminates and providers can bill you directly for care received during those final two months.22eCFR. 45 CFR 156.270 – Termination of Coverage or Enrollment for Qualified Individuals Members without tax credits usually have a shorter grace period, often 30 days, set by state law.
Plan Discontinued
If Aetna decides to discontinue a plan product, it must give at least 90 calendar days’ written notice before coverage ends, and members losing coverage this way qualify for a Special Enrollment Period.23Centers for Medicare & Medicaid Services. Insurance Standards Bulletin Series – Form and Manner of Notices When Discontinuing or Renewing a Product
Fraud and Pre-Existing Conditions
Aetna can retroactively cancel a policy only for fraud or intentional misrepresentation of a material fact during enrollment, such as deliberately underreporting income to qualify for larger subsidies.24eCFR. 45 CFR 147.128 – Rules Regarding Rescissions Federal law bars insurers from canceling coverage or charging more because of a pre-existing condition, health status, or claims history.25U.S. Department of Health and Human Services. Pre-Existing Conditions Employer plans can end if the employer drops coverage entirely, and Medicare Advantage and Medicaid enrollees must keep meeting their program’s eligibility rules to stay covered.