ICD-10-CM > S00-T88 > S30-S39 > S31 > S31.6 > S31.60 > S31.609 S31.609 Unspecified open wound of abdominal wall, unspecified quadrant with penetration into peritoneal cavity Non-Billable/Non-Specific Codes S31.609A..., initial encounterS31.609D..., subsequent encounterS31.609S..., sequela