1 4 5 7 A B C D E F G H I J K L M P Q R S T U V W X Y Z
A/ A2 A3 A4 A5 A6 A7 A8 A9 Aa Ab Ac Ad Ae Af Ag Ah Ai Aj Ak Al Am An Ao Ap Aq Ar As At Au Av Aw Ax

A9

HCPCS Level II modifier for CPT or HCPCS Level II codes indicating wound dressing for nine or more wounds. The use of this modifier has an impact on Medicare payment.