ICD-10-CM > S00-T88 > S30-S39 > S31 > S31.6 > S31.65 > S31.656 S31.656 Open bite of abdominal wall, right flank with penetration into peritoneal cavity Non-Billable/Non-Specific Codes S31.656A..., initial encounterS31.656D..., subsequent encounterS31.656S..., sequela