Adult Cancer Incidence
According to the American Cancer Society, cancer affects one in three Americans in their lifetime. We aimed to trend how cancer screenings and diagnoses have changed over time, and how they were influenced by the pandemic. Our data tracker shows the quarterly rates of overall and advanced cancer diagnoses over the past five years to understand overall trends in cancer, including breakdowns for specific cancer types.
Trends Over Time
Breast cancer is the second most common cancer diagnosed in women in the U.S and breast cancer screening remains an important way to identify potential malignancies early.
Breast Cancer Cases
Q2 2026
Quarterly rates of new cancer diagnoses per 100,000 patients.
Advanced Breast Cancer Cases
Q2 2026
Quarterly rates of new advanced cancer diagnoses per 100,000 patients.
Breast Cancer Screenings
Q2 2026
Quarterly rates of screenings per 100,000 patients.
Metric Definitions
- Numerator (Female)
- The number of distinct female patients identified in that quarter having the event of interest (Cancer Diagnosis, Cancer Screening, Pre-Cancer Diagnosis, or Advanced Cancer). Patients are excluded if they have previously had a Cancer Diagnosis of that type. Departments must contribute data for the entire study period to be included.
- Denominator (Female)
- The number of distinct female patients identified in that quarter having an in-person encounter. Departments must contribute data for the entire study period to be included.
- Breast Cancer Diagnosis
- A diagnosis with ICD-10-CM code of C50*.
- Advanced Cancer
- Advanced cancer cases are defined as either a Metastatic Diagnosis within 3 months after an initial Cancer Diagnosis, or the cancer classified as Stage 4 within 3 months after an initial Cancer Diagnosis of the same type.
- Breast Cancer Screening
- A procedure with CPT code of 77067, 77063, 77065, 77066, 76641, 76642, 76981, 76982, 76983, 77046, 77047, 77048, 77049 or a procedure with HCPCS code of G0279.
- Metastatic Diagnosis
- A diagnosis with ICD-10-CM code of C7B*, C78*, C79*, C77*.
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