ICD-10-CM > S00-T88 > S30-S39 > S31 > S31.1 > S31.10 > S31.10A S31.10A Unspecified open wound of abdominal wall, unspecified flank without penetration into peritoneal cavity Non-Billable/Non-Specific Applicable To Open wound of abdominal wall of flank NOS without penetration into peritoneal cavity Codes S31.10AA..., initial encounterS31.10AD..., subsequent encounterS31.10AS..., sequela