Preventive vs Diagnostic Services Fact SheetHealth insurance will cover the cost of colorectal cancer screening depending on whether it is considered a preventive test or a test to diagnose a health condition. This fact sheet helps explain the differences between preventive and diagnostic tests. FOR PATIENTS or for distribution by HCPs, EMPLOYERS, PAYERS and/or HEALTH SYSTEMS. Custom Logo Upload More informationFiles must be less than 2 MB. Allowed file types: gif jpg jpeg png. Back to Resources Download PDF