S31.64AD Puncture wound of abdominal wall with foreign body, unspecified flank with penetration into peritoneal cavity, subsequent encounter

S31.64AD 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, unspecified flank with penetration into peritoneal cavity, subsequent encounter.