S31.604 - Unspecified open wound of abdominal wall, left lower quadrant with penetration into peritoneal cavity S31.6 - Open wound of abdominal wall with penetration into peritoneal cavity S31.60 - Unspecified open wound of abdominal wall with penetration into peritoneal cavity S31.604 - Unspecified open wound of abdominal wall, left lower quadrant with penetration into peritoneal cavity