S31.63AA Puncture wound of abdominal wall without foreign body, unspecified flank with penetration into peritoneal cavity, initial encounter

S31.63AA is a new billable/specific diagnosis code introduced in the 2026 ICD-10-CM used to classify the following condition: Puncture wound of abdominal wall without foreign body, unspecified flank with penetration into peritoneal cavity, initial encounter.