1 2 3 4 5 7 8 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
S. S2 Sa Sb Sc Sd Se Sf Sg Sh Si Sj Sk Sl Sm Sn So Sp Sq Sr Ss St Su Sv Sw Sy

SD

HCPCS Level II modifier that may be used with CPT or HCPCS Level II codes indicating services provided by a registered nurse with specialized, highly technical home infusion training.