ICD-10-CM > S00-T88 > S30-S39 > S31 > S31.6 > S31.60 > S31.603 S31.603 Unspecified open wound of abdominal wall, right lower quadrant with penetration into peritoneal cavity Non-Billable/Non-Specific Codes S31.603A..., initial encounterS31.603D..., subsequent encounterS31.603S..., sequela