ICD-10-CM > S00-T88 > S30-S39 > S31 > S31.1 > S31.15 > S31.155 S31.155 Open bite of abdominal wall, periumbilic region without penetration into peritoneal cavity Non-Billable/Non-Specific Codes S31.155A..., initial encounterS31.155D..., subsequent encounterS31.155S..., sequela