CAR-T: What is the effective date for the requirement of the KX modifier for administration of CAR-T?
CR 12177 was implemented on 9/20/2021, specifying that HCPCS 0540T requires a KX modifier on Part B claims for CAR-T, to acknowledge that the service is being performed in an FDA REMS facility. For Part B claims, the logic that was created will accept modifier KX on code 0540T with an effective date of 8/7/19.
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