15.1 ACA Essential Health Benefits and Metal Levels

The Affordable Care Act (ACA), enacted in 2010, reshaped the individual and small-group health markets. The exam tests the ACA's core consumer mandates, the standardized benefit package, and the metal-tier system used to compare plans. Memorize the lists exactly, because the test rewards precise recall.

Essential Health Benefits (EHB)

Every non-grandfathered individual and small-group plan must cover ten categories of essential health benefits. No annual or lifetime dollar limits may apply to these benefits. The ten categories are:

A reliable memory aid groups them: outpatient, emergency, hospital, maternity, mental health, drugs, rehab, labs, preventive, pediatric. If a question lists "adult dental" or "long-term custodial care" as an EHB, it is wrong — those are excluded.

Preventive Services With No Cost-Sharing

The ACA requires that recommended preventive care be covered at 100% with no deductible, copay, or coinsurance when delivered in-network. This includes immunizations, many cancer screenings (mammograms, colonoscopies), blood-pressure and cholesterol checks, and well-woman visits. The exam likes the trap that preventive care "applies to the deductible" — it does not, when in-network and on the recommended list.

The Metal Levels

Marketplace plans are sorted into four metal tiers by actuarial value (AV) — the percentage of total covered medical costs the plan pays on average for a standard population. The member pays the remainder through deductibles, copays, and coinsurance.

Higher metal levels carry higher premiums but lower out-of-pocket costs at the time of care. A useful exam phrase: "Bronze trades a low premium for high cost-sharing; Platinum trades a high premium for low cost-sharing." Silver is the pivotal tier because cost-sharing reduction subsidies (covered in 15.3) attach only to Silver plans.

Worked Example: Actuarial Value

Suppose a standard population incurs $10,000 of covered medical expenses in a year. Under a Gold plan (80% AV), the plan is designed to pay about $8,000 and the enrollee about $2,000 across the population on average. AV is a population average, not a promise for any single person; a heavy utilizer may still hit the out-of-pocket maximum, while a healthy member pays far less. The exam tests the definition of AV as an average, not an individual guarantee.

Catastrophic Plans

A fifth, limited option — the catastrophic plan — is available only to people under 30 or those with a hardship/affordability exemption. It covers the three primary-care visits and all EHBs after a high deductible (set at the out-of-pocket maximum), but premium tax credits cannot be applied to it. Treat catastrophic as a special-case answer reserved for young or exempt enrollees.

Annual Out-of-Pocket Maximum

Every ACA-compliant plan caps the enrollee's annual out-of-pocket spending on essential health benefits. Once the member reaches the out-of-pocket maximum (deductible + copays + coinsurance for in-network EHBs), the plan pays 100% of covered care for the rest of the year. Premiums do not count toward this cap, and out-of-network charges generally do not count either. The cap is adjusted annually for inflation and is the same dollar limit applied across all metal tiers, though lower metal tiers reach it more often because their cost-sharing is steeper.

A frequent exam distinction: the deductible is the amount paid before coinsurance begins, while the out-of-pocket maximum is the ceiling on total member spending.

No Annual or Lifetime Dollar Limits

A defining ACA reform is the prohibition on annual and lifetime dollar limits for essential health benefits. Before the ACA, a plan might cap lifetime payouts at, say, $1 million, leaving catastrophically ill members uninsured once they exhausted it. Today no such dollar caps may apply to EHBs, although plans may still impose non-dollar limits such as visit counts for certain therapies. The exam pairs this rule with guaranteed renewability: a compliant plan cannot run out of coverage for a high-cost member.

Dependent Coverage to Age 26

The ACA requires plans offering dependent coverage to allow adult children to remain on a parent's plan until age 26, regardless of marital status, residence, financial dependency, or student status. This is among the most heavily tested ACA mandates because it is a clean, memorizable number. After age 26 the dependent must obtain other coverage, often through the Marketplace or an employer.

Grandfathered Plans

A grandfathered plan is one that existed on March 23, 2010, and has not made significant benefit cuts or cost-sharing increases since. Such plans are exempt from some ACA mandates (for example, the full preventive-care and EHB rules) but must still honor core protections like the prohibition on lifetime limits and dependent coverage to age 26. The exam contrast: a grandfathered plan loses its status — and must comply fully — the moment the employer materially reduces benefits or raises the member's cost-sharing beyond allowed thresholds.