Health insurer Cigna has told its members that it won't pay for digital breast tomosynthesis (DBT) screening exams, according to a report from television station WCVB in Boston.
Most Boston hospitals offer the technology routinely to all women, WCVB said. But in a letter to policyholders, Cigna stated there's not enough evidence to support using DBT for breast cancer screening, and that it uses twice the radiation of conventional 2D mammography.
"Cigna does not cover digital breast tomosynthesis (DBT) ... for screening either as a standalone test or as an adjunct to screening mammography because it is considered experimental, investigational, or unproven," the company wrote in a coverage brief dated November 15.













![A normal mammogram confirmed by three-year radiologic follow-up illustrates reader-marked regions of interest (ROIs) during (A) unaided (round 1) and (B) artificial intelligence (AI)–assisted (round 2) reading. Each colored dot represents an ROI for recall by a human reader. Readers could mark more than one ROI per case, represented by multiple dots of the same color. During AI-assisted reading, the AI system displayed three visible prompts: two with suspicion of malignancy scores of 35% (left mediolateral oblique [L MLO] and craniocaudal [L CC]) and one with a suspicion of malignancy score of 10% (right craniocaudal [R CC]), shown as polygonal overlays. Without AI, six of 10 readers (60%) marked a false-positive ROI. With AI assistance, this fell to two of 10 (20%). R MLO = right mediolateral oblique.](https://img.auntminnie.com/mindful/smg/workspaces/default/uploads/2026/07/2026-07-14-radiology-mammogram-ai-auto-bias.H0bYO8QlWs.jpg?auto=format%2Ccompress&fit=crop&h=112&q=70&w=112)





