CMS Announces 2019 Ambulance Inflation Factor

On November 30, 2018, CMS issued Transmittal 4172 (Change Request 11031), which announced the Medicare Ambulance Inflation Factor (AIF) for calendar year 2019.

The AIF is calculated by measuring the increase in the consumer price index for all urban consumers (CPI-U) for the 12-month period ending with June of the previous year. Starting in calendar year 2011, the change in the CPI-U is now reduced by a so-called “productivity adjustment”, which is equal to the 10-year moving average of changes in the economy-wide private nonfarm business multi-factor productivity index (MFP). The MFP reduction may result in a negative AIF for any calendar year. The resulting AIF is then added to the conversion factor used to calculate Medicare payments under the Ambulance Fee Schedule.

For the 12-month period ending in June 2018, the federal Bureau of Labor Statistics (BLS) has calculated that the CPI-U has increased 2.9%. CMS further indicated that the CY 2019 MFP will be 0.6%. Accordingly, CMS indicated that the Ambulance Inflation Factor for calendar year 2019 will be 2.3%.

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2018, 2019, Ambulance Fee Schedule, Ambulance Inflation Factor, Bureau of Labor Statistics (BLS), Centers for Medicare and Medicaid Services (CMS), multi-factor productivity index (MFP)


Brian Werfel

Brian S. Werfel, Esq. is a partner in Werfel & Werfel, PLLC, a New York based law firm specializing in Medicare issues related to the ambulance industry. Brian is a Medicare Consultant to the American Ambulance Association, and has authored numerous articles on Medicare reimbursement, most recently on issues such as the beneficiary signature requirement, repeat admissions and interrupted stays. He is a frequent lecturer on issues of ambulance coverage and reimbursement. Brian is co-author of the AAA’s Medicare Reference Manual for Ambulance, as well as the author of the AAA’s HIPAA Reference Manual. Brian is a graduate of the University of Pennsylvania and the Columbia School of Law. Prior to joining the firm in 2005, he specialized in mergers & acquisitions and commercial real estate at a prominent New York law firm. Werfel & Werfel, PLLC was founded by David M. Werfel, who has been the Medicare Consultant to the American Ambulance Association for over 20 years.

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