AIF for Calendar Year (CY) 2024 and Productivity Adjustment - Rescinded

Related CR Release Date: December 19, 2023
Effective Date: January 1, 2024
Implementation Date: January 2, 2024
Related Change Request (CR) Number: CR 13400
Related CR Transmittal Number: R12414CP

Note: Transmittal 12268 issued September 28, 2023, is being rescinded and replaced by Transmittal12414, dated December 19, 2023, to remove business requirement 13400.3, which read, "Upon successful receipt of each file, the contractor shall send notification of receipt via email to, stating the name of the file received and the entity for which it was received (e.g., contractor name and number)". All other information remains the same.

CR 13400 manualizes the Ambulance Inflation Factor (AIF) so that Medicare contractors can accurately determine payment amounts for ambulance services. This recurring update notification applies to publication 100-04, Medicare Claims Processing Manual, chapter 15, section 20.4.

Make sure your billing staff are aware of these changes.

View the complete CMS Change Request (CR)13400.

Last Updated Jan 11 , 2024