Breast
Dense breasts — do you qualify for free supplemental imaging?
Last reviewed July 1, 2026
About 40% of women over 40 have dense breast tissue, which is common, but it also raises breast cancer risk AND makes mammograms harder to read. Dense tissue looks white on a mammogram, and so does cancer. Supplemental imaging (ultrasound, MRI, contrast-enhanced mammography) catches cancers that mammograms miss in dense breasts. As of 2024, all women in the US receive notification of their breast density after a mammogram. And in more than 30 states, supplemental imaging for dense breasts is covered at no cost.
The steps
Step 1: Know your density. As of March 2024, federal rules require all mammogram facilities to notify women of their breast density. If you’ve had a mammogram since then, your notification is in your patient portal or your last mammogram report. Categories: A (almost entirely fatty — low density), B (scattered), C (heterogeneously dense), D (extremely dense). C and D count as "dense" for coverage purposes.
Step 2: Check your state’s law. States with laws requiring insurance coverage of supplemental imaging for dense breasts as of 2026 include (partial list) Connecticut, Illinois, New Jersey, New York, Pennsylvania, Texas, and more than 25 others. Full current list: densebreast-info.org/legislation.
Step 3: Ask your provider to order supplemental imaging. Options include: whole-breast ultrasound (most commonly ordered, covered in most states with dense breast laws), breast MRI (higher sensitivity but more expensive, usually reserved for high-risk women), contrast-enhanced mammography (newer, growing coverage).
This applies when
- You have category C or D breast density (heterogeneously or extremely dense)
- You live in a state with a supplemental imaging coverage law
- You have ACA-compliant insurance
- You have additional risk factors that push you into high-risk category (which qualifies you for MRI in most plans regardless of state law)
This doesn't apply when
- Your mammogram shows fatty or scattered breast tissue (categories A or B)
- You're under 40 without high-risk factors that qualify you for supplemental imaging
- You already receive annual supplemental imaging covered by your plan
- You need diagnostic imaging for a lump or symptom. See the diagnostic mammogram appeals guide instead
Resources
DenseBreast-info.org: The comprehensive resource on breast density, state laws, and screening recommendations.
AreYouDense.org: Advocacy organization founded by a woman whose invasive cancer was missed on multiple mammograms due to dense breasts.
Susan G. Komen State Advocacy: komen.org/what-we-do/public-policy.
National Breast Cancer Foundation: nationalbreastcancer.org.
If you're denied
If you’re in a state with a supplemental imaging law and denied coverage, cite that specific state statute in your appeal. Include your breast density notification and your provider’s order. If you’re not in a state with a law but meet high-risk criteria (family history, prior chest radiation, personal history, BRCA), request coverage under high-risk screening rules — most plans cover MRI for women with 20%+ lifetime breast cancer risk (via IBIS or Tyrer-Cuzick risk calculators).
