Preventive Care Requirements Under the ACA

The Affordable Care Act mandates that most health plans cover a defined set of preventive services without charging a copayment, coinsurance, or deductible — even when a patient has not met their plan's deductible. This requirement applies to non-grandfathered plans in the individual, small group, and large group markets, making it one of the broadest coverage mandates in the law. Understanding the scope and enforcement of this requirement is essential for employers, plan administrators, and insurers operating under ACA-compliant plan designs, which are part of the broader regulatory context for the ACA.

Definition and Scope

Under Section 2713 of the Public Health Service Act, as incorporated by the ACA, non-grandfathered health plans must cover preventive services with no cost sharing at the point of service. The statute delegates authority to three distinct bodies to define which services qualify:

  1. United States Preventive Services Task Force (USPSTF) — recommendations graded A or B apply to adults and children for general preventive screenings and counseling.
  2. Advisory Committee on Immunization Practices (ACIP) — recommended immunizations for children, adolescents, and adults.
  3. Health Resources and Services Administration (HRSA) — preventive care and screenings for women and comprehensive guidelines for children and adolescents under the Bright Futures program.

The mandate covers services rated A or B by USPSTF, all ACIP-recommended vaccines, and HRSA-designated services. A plan may not impose any cost-sharing requirement — copay, coinsurance, or deductible — for in-network delivery of these services (45 CFR § 147.130).

Grandfathered plans are explicitly exempt from this requirement, which is one of the most consequential distinctions between grandfathered and non-grandfathered status. Plans that retain grandfathered status under the ACA are not required to provide zero-cost-share preventive services.

How It Works

When a covered individual receives a preventive service from an in-network provider, the plan must pay its contracted rate without applying cost sharing to the patient. The operational sequence functions as follows:

  1. Service classification — The plan or its third-party administrator confirms the billed service maps to a USPSTF A/B recommendation, an ACIP-recommended vaccine, or an HRSA-designated service.
  2. Network status confirmation — The provider must be in-network for the zero-cost-share requirement to apply. Out-of-network preventive care may be subject to normal cost-sharing terms.
  3. Coding and billing — The service must be coded correctly by the provider. Routine visits billed as diagnostic rather than preventive are not automatically covered at zero cost share.
  4. Plan adjudication — The plan processes the claim without applying deductible or copay obligations to the patient for the covered preventive component.
  5. Explanation of Benefits — The member receives an EOB showing $0 patient responsibility for the qualifying preventive service.

A critical operational boundary exists when a preventive visit includes additional diagnostic services. Under federal guidance from the Departments of Health and Human Services (HHS), Labor (DOL), and Treasury, if a patient presents for a covered preventive screening and the provider also addresses a separate, non-preventive condition during the same visit, the plan may apply cost sharing to the non-preventive portion of that visit (FAQ guidance from the tri-agency FAQ Part XII).

Common Scenarios

Scenario 1: Annual well-woman exam
A plan member receives an annual well-woman visit including blood pressure screening, cervical cancer screening, and contraceptive counseling. All three services fall under HRSA women's preventive services guidelines, so the plan applies zero cost sharing. If the member also requests treatment for a sinus infection during that visit, the plan may charge the applicable copay for that separate service only.

Scenario 2: Colorectal cancer screening
USPSTF assigns an A rating to colorectal cancer screening for adults aged 45 to 75 (USPSTF recommendation). A colonoscopy ordered purely as a preventive screening for an eligible patient must be covered with no cost sharing. If a polyp is removed during the same procedure, whether that constitutes a diagnostic or preventive service remains a subject of regulatory debate; federal agencies have issued guidance specifying that plans may not impose cost sharing on a colonoscopy that began as a preventive screening and incidentally resulted in a polyp removal.

Scenario 3: Childhood immunizations
ACIP recommends specific vaccine schedules for children from birth through adolescence. A pediatric plan must cover all ACIP-recommended vaccines for children at zero cost share when administered in-network, covering as many as 16 or more distinct vaccine antigens depending on the schedule year.

Scenario 4: Statin prescriptions for cardiovascular prevention
USPSTF issued a B-grade recommendation for statin use for primary prevention of cardiovascular events in adults aged 40 to 75 meeting specific risk criteria. This recommendation extended the preventive coverage mandate into pharmaceutical coverage, requiring plans to cover qualifying statin prescriptions at zero cost share — a provision that generated significant litigation discussed below.

Decision Boundaries

Grandfathered vs. non-grandfathered plans
Non-grandfathered plans are subject to the full preventive services mandate. Grandfathered plans, which have maintained continuous enrollment since March 23, 2010, without crossing specific benefit or cost-sharing change thresholds, are not required to comply. The distinction is binary: a plan either qualifies as grandfathered or it does not.

USPSTF litigation and Braidwood Management, Inc. v. Becerra
The Fifth Circuit Court of Appeals held in Braidwood Management, Inc. v. Becerra that USPSTF recommendations issued after the ACA's 2010 enactment may be constitutionally infirm because the task force members were not appointed through the constitutionally required process. The Supreme Court took up the case, and the legal status of post-2010 USPSTF recommendations was in active dispute as of the court proceedings. Plans and administrators monitoring compliance obligations should track agency guidance from HHS and DOL, which has been issued to clarify enforcement posture during the litigation period (HHS.gov ACA preventive care overview).

Preventive vs. diagnostic service determination
The boundary between a preventive and a diagnostic service is not determined solely by the patient's intent. Coding by the provider, the clinical reason for the encounter, and the plan's administrative classification rules all factor in. A service coded as diagnostic — for example, a colonoscopy ordered because of symptoms rather than age-based screening — may not qualify for the zero-cost-share protection even if the underlying test is identical.

Self-funded plan obligations
Self-funded plans sponsored by private employers are subject to the preventive services mandate through the Employee Retirement Income Security Act (ERISA) and the ACA's amendments to it. Fully insured plans in the individual and small group markets must additionally comply with state insurance regulations, which may expand but not contract the federal floor. The ACA's coverage structure for plan design, including how preventive care interacts with essential health benefit requirements, governs the full scope of coverage obligations across market segments. For a broader overview of how these requirements fit within the ACA's structure, the acaauthority.com resource center provides structured reference material across the law's major provisions.

References

The law belongs to the people. Georgia v. Public.Resource.Org, 590 U.S. (2020)