Improving Diagnostic Innovations Act of 2012 - Sets forth additional factors for the Secretary of Health and Human Services (HHS) to consider in determining the payment amount for new clinical diagnostic laboratory tests under gap filling procedures which are used when no comparable existing test is available.
Directs the Secretary to convene an independent advisory panel to inform and make recommendations to the Secretary regarding any new test.
Directs the Secretary to: (1) establish a process for application for the assignment of a temporary national HCPCS (Healthcare Common Procedure Coding System) code to uniquely identify a diagnostic test until a permanent national HCPCS code is available for assignment to that test, (2) analyze the process used for the gapfilling procedures used in determining payment amounts for new clinical diagnostic laboratory tests, and (3) implement improvements in the process after public notice and opportunity for comment.