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
A. A/ A1 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

A4

HCPCS Level II modifier for dressing four wounds that can be used with CPT or HCPCS Level II codes. The use of this modifier has an impact on Medicare payment.