ICD-10-CM > K00-K95 > K65-K68 > K65 > K65.1 K65.1 Peritoneal abscess Billable/Specific Copy Code Copy Description Applicable To Abdominopelvic abscessAbscess (of) omentumAbscess (of) peritoneumMesenteric abscessRetrocecal abscessSubdiaphragmatic abscessSubhepatic abscessSubphrenic abscess