Modifier
From the Top Navigational Menu, select “Set Up”, and then “Modifier”.
In the Code field, enter the actual Modifier Code numbers or letters (letters must be in UPPER CASE text). Do not include a dash in front of the entry made (For example: Modifier Code -59 should be entered as 59 only).
In the Description field, enter the description of the Modifier Code (up to 55 characters in length).
In the +/- Units field, enter the number of units the Modifier Code adds to or takes away from the Procedure Code it is modifying. If it takes away from, then enter a negative in front of the unit (i.e.: -5 would be entered if it takes away 5 units). (This may not apply to your type of medical practice and may be left blank.)
In the Adjust Units by % field, enter the percentage amount that the Modifier Code is adjusting the number of Procedure Code units by. (This may not apply to your type of medical practice and may be left blank.)