The Departments of Labor, Health & Human Services, and the Treasury issued guidance in 2022 that plans and insurers “must cover and may not impose cost sharing with respect to a colonoscopy conducted after a positive non-invasive stool-based screening test” for plan or policy years1 beginning on or after May 31, 2022, and, further, “may not impose cost-sharing with respect to a polyp removal during a colonoscopy performed as a screening procedure.”2 So why are so many patients still being charged fees for these screening services? In many cases, the answer comes down to missing code modifiers.
Commercial insurers want you to use modifier 33
AGA spoke to Elevance (formerly Anthem), Cigna, Aetna, and Blue Cross Blue Shield Association about how physicians should report colorectal cancer screening procedures and tests. They said using the 33 modifier (preventive service) is essential for their systems to trigger the screening benefits for beneficiaries. Without the 33 modifier, the claim will be processed as a diagnostic service, and coinsurance may apply.
According to the CPT manual, modifier 33 should be used “when the primary purpose of the service is the delivery of an evidence-based service in accordance with a U.S. Preventive Services Task Force A or B rating in effect and other preventive services identified in preventive mandates (legislative or regulatory) ...” Use modifier 33 with colonoscopies that start out as screening procedures and with colonoscopies following a positive non-invasive stool-based test, like fecal immunochemical test (FIT) or Cologuard™ multi-target stool DNA test.
It is important to note that modifier 33 won’t ensure all screening colonoscopy claims are paid, because not all commercial plans are required to cover 100 percent of the costs of CRC screening tests and procedures. For example, employer-sponsored insurance plans and legacy plans can choose not to adopt the expanded CRC benefits. Patients who are covered under these plans may not be aware that their CRC test or procedure will not be fully covered. These patients may still receive a “surprise” bill if their screening colonoscopy requires removal of polyps or if they have a colonoscopy following a positive non-invasive CRC test.
