Based on evidence collected from a National Oncologic PET Registry (NOPR) observational study, the Centers for Medicare & Medicaid Services (CMS) has issued a national coverage determination (NCD) that expands Medicare coverage for positron-emission tomography (PET) scans used to support initial diagnosis and treatment for most types of solid tumor cancers. The NCD also expands coverage for follow-up testing for certain cancers. The NCD removes a requirement that providers report data to the NOPR for these cancers, but does not remove the requirement that providers report data to the NOPR when using PET scans to monitor treatment progress or remission of cancer in certain cases. More information on the NCD can be found here.