S31.646D Puncture wound of abdominal wall with foreign body, right flank with penetration into peritoneal cavity, subsequent encounter

S31.646D is a new billable/specific and POA-exempt diagnosis code introduced in the 2026 ICD-10-CM used to classify the following condition: Puncture wound of abdominal wall with foreign body, right flank with penetration into peritoneal cavity, subsequent encounter.