Medicare CT Angiography Utilization Grew Since 2017
Yale University researchers analyzed over 8.7 million Medicare claims to track trends in head and neck imaging.
Updated on Sept. 21, 2026 in Stroke
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Between 2017 and 2024, Medicare Fee-for-Service claims for head and neck CT angiography surged by 206% per beneficiary. A study conducted by Yale University researchers evaluated data from over 8.7 million services performed by 19,143 physicians.
Why it matters
The analysis sought to understand the rapid expansion of advanced diagnostic imaging and the evolving roles of neuroradiologists versus other specialists in interpreting these essential stroke-related scans.
Researchers identified 8,712,757 total CT angiography services billed by 19,143 unique physicians. Neuroradiologists accounted for 36.3% of interpretations in 2024 and comprised 57.5% of the top-decile providers by volume.
The players
Yale University
This private Ivy League research university is based in New Haven, Connecticut, and is a world-renowned center for medical and scientific research.
The details
The study utilized paired Wilcoxon signed-rank testing to evaluate physician performance, categorizing providers as neuroradiologists, other radiologists, or other specialty physicians. Findings showed that while the number of providers performing scans rose to 13,021 by 2024, the interpretation share for neuroradiologists shifted slightly from 37.7% in 2017.
Timeline
The analysis covered Medicare claims data from 2017 to 2024.
The Big Picture
This analysis utilizes Medicare Fee-for-Service Part B claims processing as a diagnostic tool for measuring national medical service trends. The results update figures previously established regarding the rapid integration of advanced imaging into standard stroke-related diagnostic protocols.
The increased frequency of CT angiography scans means patients may encounter these diagnostic tools more often during routine stroke screening and neurological assessment. Patients should consult with their providers to understand the specific necessity and diagnostic intent of advanced imaging orders.
The takeaway
The surge in scan volume suggests a significant shift in how diagnostic imaging is incorporated into routine Medicare-covered neurological care. Understanding these utilization patterns can help patients and providers navigate the evolving landscape of diagnostic medicine.
Further reading
For more information on current diagnostic trends and clinical standards, visit the United States Stroke section.
Source note: This article includes information reported by InsuranceNewsNet.
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