Modifier FX

20.6.14 - Modifier FX (Rev. 11937; Issued: 03-31-23; Effective: 04-01-23; Implementation: 04-03-23) FX: X-ray taken using film A. General Consistent with the requirements set forth in section 1833(t)(16)(F)(i), and in accordance with provisions allowed under section 1833(t)(16)(F)(iv) of the Act, CMS established modifier FX to identify imaging services that are x-rays taken using film. As stated in the CY 2017 OPPS/ASC final rule (81 FR 79729 through 79730), hospitals are required to use this modifier to report imaging services that are X-rays taken using film effective January 1, 2017. B. Effect on Payment Payment for x-ray services taken using film reported with modifier FX will be reduced by 20 percent effective January 1, 2017. We note that when payment for an x-ray service taken using film is packaged into the payment for another item or service under the OPPS, no separate payment for the x-ray service taken using film is made. Accordingly, the payment reduction in this instance would be 0 percent (that is, 20 percent of $0). All imaging services that are x-rays are listed in the OPPS Addendum B, which is available via the Internet on the CMS Web site.