Lung
Low-dose CT lung screening: who qualifies for free
Last reviewed July 1, 2026
Low-dose CT (LDCT) is the only lung cancer screening tool proven to reduce mortality. It’s covered at 100% under ACA and Medicare for people who meet the specific USPSTF criteria. Those criteria matter, because if you fall within them, this is free, and if you don’t, it might be a hard sell to your insurance.
The steps
The USPSTF 2021 criteria for free annual LDCT: age 50-80, 20+ pack-year smoking history, current smoker or quit within the last 15 years. A pack-year is one pack a day for one year (or two packs a day for six months — same thing). If you fit all three criteria, this is a covered preventive service. Book it as "lung cancer screening" and confirm coverage in advance.
If you don’t meet criteria, because you’ve been quit longer, because you were a lighter smoker, or because you never smoked — LDCT can still be ordered by your doctor if there’s clinical justification (persistent cough, family history, exposure history). It won’t be free, but retail price is typically $200-$400. And a diagnostic chest CT for a specific symptom is a different pathway that’s often covered.
Never-smokers with concerning symptoms (cough, weight loss, hemoptysis): a chest CT ordered as diagnostic (not screening) is your route. The screening pathway is not for you, but the diagnostic pathway is available and appropriate.
This applies when
- You’re 50-80, have 20+ pack-years of smoking, and currently smoke or quit within 15 years
- You have ACA-compliant insurance or Medicare
- You get screened annually (once per year, following abnormal findings protocol if applicable)
This doesn't apply when
- You don’t meet the age/smoking criteria (may still get diagnostic imaging with symptoms)
- You quit smoking more than 15 years ago
- You’ve never smoked (unless there’s a specific occupational or clinical trigger)
Resources
American Lung Association Lung Cancer Screening Initiative: Directory of accredited screening centers plus financial assistance info. Lung.org or 1-800-586-4872.
Free to Breathe (a program of LUNGevity): Financial assistance for lung cancer patients (not screening, but valuable if diagnosed). lungevity.org.
Community LDCT programs: Some hospital systems offer $99 self-pay LDCT for people who don’t qualify. Ask locally.
If you're denied
If you meet all USPSTF criteria and are denied — that’s incorrect application of ACA rules. Cite Section 2713 and the USPSTF Grade B recommendation for lung cancer screening. If you’re denied for not meeting criteria, work with your doctor to document the clinical justification for a diagnostic chest CT instead — different pathway, but often covered when symptoms warrant.
