ICD-10-CM > S00-T88 > S30-S39 > S31 > S31.6 > S31.63 > S31.637 S31.637 Puncture wound of abdominal wall without foreign body, left flank with penetration into peritoneal cavity Non-Billable/Non-Specific Codes S31.637A..., initial encounterS31.637D..., subsequent encounterS31.637S..., sequela