L1 Modifier

thomas7331

True Blue
Messages
3,339
Best answers
10
The L1 modifier is only used on facility UB claims. It's to indicate that a lab service should not be packaged with other services billed on the same UB claim because the lab is clinically unrelated to those other services due to being ordered by a different provider and for a different diagnosis. It's sort of like a 59 modifier for separating out labs from other outpatient hospital services for payment purposes.
 
Top