Conversion Factor (CF)
The Conversion Factor (CF) is the dollar multiplier Medicare applies to relative value units to calculate a procedure's payment under the Physician Fee Schedule. Updated annually, it converts abstract resource weights into actual reimbursement amounts affecting ASC-affiliated billing.
What is the conversion factor (CF)?
The conversion factor (CF) is the dollar multiplier Medicare applies to a procedure's relative value units to calculate its payment under the Physician Fee Schedule. Relative value units express the relative resource intensity of a service, and the conversion factor turns that abstract weight into an actual dollar amount.
Medicare updates the conversion factor each year, so the same relative value units can translate into different payment amounts from one year to the next.
Why does the conversion factor matter?
Because the conversion factor scales every fee-schedule payment, even small annual changes shift reimbursement across a wide range of services at once. Providers and their financial teams watch it closely as a signal of how Medicare payment is trending.
While the conversion factor governs physician fee schedule payment rather than the facility payment system an ASC bills under, it directly affects the professional billing of the physicians associated with surgery center cases. Understanding it helps the broader care team anticipate how annual Medicare updates will ripple through their related reimbursement.
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