Free Preventive Care: What the ACA Covers and When You Still Pay

Most health plans have to cover a set of preventive services, such as screening tests, vaccines and certain counseling, without charging you a copayment or coinsurance, even if you have not met your deductible. For many families this is one of the most valuable parts of their coverage, and one of the most misunderstood.

The catch is in the details. A "free" checkup can still produce a bill if the doctor was out of network, if the visit turned into a conversation about a new problem, or if a test was ordered to diagnose symptoms rather than to screen for disease. HealthCare.gov itself now notes that coverage may vary and that "$0 cost isn't guaranteed in all cases."

This guide explains where the preventive services list comes from, why surprise charges happen, and what to do about them. It is general information, not medical, insurance or legal advice. Your plan documents and your insurer have the final word on what your specific plan covers.

Which plans have to follow the rule

As of October 2026, HealthCare.gov says all Marketplace health plans and "many other plans" must cover the listed preventive services without charging a copayment or coinsurance. The federal regulation behind this, 45 CFR 147.130, applies to group health plans (most job-based coverage) and to insurers selling group or individual coverage.

The main exception is a grandfathered plan. HealthCare.gov defines a grandfathered individual policy as one purchased on or before March 23, 2010, and warns that these plans may not include some Affordable Care Act protections. A plan must disclose whether it considers itself grandfathered, so if you are unsure, check your plan materials or ask the insurer or your employer's benefits office.

Where the list comes from

The regulation ties no-cost coverage to four sources rather than to a fixed list written into law:

• Screenings and services rated A or B by the U.S. Preventive Services Task Force for the person involved.
• Routine immunizations recommended by the CDC's Advisory Committee on Immunization Practices and adopted by the CDC director.
• Preventive care and screenings for infants, children and adolescents in guidelines supported by the Health Resources and Services Administration (HRSA).
• Additional preventive care for women in HRSA-supported guidelines.

Because the list follows these recommendations, it changes over time. Under the regulation, a plan generally must start covering a new recommendation for plan years that begin at least one year after it is issued. If a recommendation changes during a plan year, the plan generally must keep covering the service until the end of that plan year, unless the service is downgraded to a "D" rating or found to pose a significant safety concern.

HealthCare.gov keeps plain-language lists for adults, women and children. As of October 2026, examples include blood pressure screening, colorectal cancer screening for adults 45 to 75 years, depression screening, hepatitis C screening for adults 18 to 79 years, mammograms every one to two years for women 40 and older, autism screening for children at 18 and 24 months, and fluoride varnish for children once teeth are present. Many items apply only to certain ages or to people at higher risk, so a service on the list is not automatically free for everyone.

Why you might still get a bill

Most unexpected charges for "free" care come from one of these situations.

1. The provider was out of network. The regulation lets a plan with a network charge cost sharing, or decline to pay, for preventive services from out-of-network providers. If the plan has no in-network provider who can deliver the service, though, it must cover it out of network with no cost sharing.
2. The office visit was billed separately. If a preventive service is billed separately from the office visit, the plan may charge cost sharing for the visit itself. If it is not billed separately, the plan may charge for the visit when the visit's primary purpose was something other than preventive care.
3. The visit became a problem visit. One example in the regulation describes a patient who sees a doctor about recurring abdominal pain and gets a blood pressure screening during the visit. Because prevention was not the primary purpose, the plan may charge cost sharing for the visit.
4. The care was treatment, not screening. A plan may charge cost sharing for treatment that results from a preventive service. One notable exception: federal agencies said in their January 10, 2022 FAQs that a follow-up colonoscopy after a positive non-invasive stool-based test or direct visualization screening test for colorectal cancer is part of the screening and must be covered without cost sharing, for plan or policy years beginning on or after May 31, 2022.
5. The plan used "reasonable medical management." Where a recommendation does not specify frequency, method or setting, plans may set those limits, for example how often a screening is covered.

How to keep a preventive visit preventive

A few habits make it more likely your visit is billed the way you expect:

• Confirm the doctor, lab and facility are all in your plan's network before the appointment. Lab work is sometimes sent to a separate lab.
• When you schedule, say you are booking a preventive visit or annual physical.
• If you want to discuss a new or ongoing health problem, ask whether that will be billed as a separate visit, and consider whether to schedule it separately.
• When a test is ordered, ask whether it is being ordered as a screening or to diagnose a symptom, and whether your plan treats it as preventive.
• Afterward, compare the Explanation of Benefits from your insurer with the bill from the provider before you pay.

For example, imagine a 50-year-old who books an annual physical and, during the visit, asks about knee pain that started last month. The screening portion may be covered in full, while the knee discussion may be billed as a regular office visit subject to the deductible. Neither result is a mistake; they are two different kinds of care.

If you are charged for something you think should be free

Start with the provider's billing office. Ask what billing codes were used and whether the service was coded as preventive; coding errors do happen. Then call your insurer, explain why you believe the service is a covered preventive service, and ask them to reprocess the claim.

If the insurer still says you owe cost sharing, you can file an internal appeal and, in many cases, request an independent external review. Our guide "Appealing a Denied Health Claim: Internal Appeals and External Review" walks through those steps and deadlines.

For personal help, contact your state's Consumer Assistance Program if your state has one, or your state insurance department; CMS keeps a state-by-state map of these programs. If your coverage comes from a private employer, the U.S. Department of Labor's Employee Benefits Security Administration can answer questions about plan rules. Medicare has its own preventive benefits and rules; people with Medicare can get one-on-one counseling from their State Health Insurance Assistance Program (SHIP).

Key takeaways

• Most non-grandfathered plans must cover listed preventive services in network with no copayment, coinsurance or deductible.
• The list follows USPSTF A and B ratings, ACIP vaccine recommendations and HRSA guidelines, so it changes over time and depends on your age and risk.
• Bills usually come from out-of-network providers, separately billed office visits, visits focused on a new problem, or treatment that follows a screening.
• A follow-up colonoscopy after a positive stool-based or direct visualization colorectal screening test must be covered without cost sharing, according to federal agencies' January 10, 2022 FAQs.
• If you are billed for preventive care, check the coding, ask the insurer to reprocess, then appeal if needed.

Sources

• HealthCare.gov, Preventive health services
• HealthCare.gov, Preventive care benefits for adults
• HealthCare.gov, Preventive care benefits for women
• HealthCare.gov, Preventive care benefits for children
• Electronic Code of Federal Regulations, 45 CFR 147.130 Coverage of preventive health services
• U.S. Departments of Labor, HHS and the Treasury, FAQs About Affordable Care Act Implementation Part 51 (January 10, 2022)
• HealthCare.gov, Grandfathered Health Plan (glossary)
• CMS, Consumer Assistance Grants (state Consumer Assistance Programs)