I need help coding this operation please.

1. Resection lower abdominal wall desmoid tumor full thickness fascia muscle, peritoneum approx 6 x 8 cm.
2. Exploration of the abdominal cavity.
3. Reconstruction of teh abdominal wall utilizing Sepramesh IP.

I would guess 22901 for the resection of the tumor, but am at a loss for the rest. Thank you for helping!!