If the abdominal wound is from the result of a traumatic penetration, then you could use code 20102 for exploration of a penetrating would of the abdomen, flank, or back.
cpt code for abdominal hernia
767000
44147
47480
CPT code; 43135
scar revision
50500 pg 185 CPT 2012
Exploration of spinal fusion
96110
13160
58150
44150