ICD-10-CM > K00-K95 > K65-K68 > K66 > K66.1 K66.1 Hemoperitoneum Billable/Specific Copy Code Copy Description Applicable To Peritoneal hematomaPeritoneal hemorrhage Type 1 Excludes traumatic hemoperitoneum (S36.8-) Type 2 Excludes retroperitoneal hematoma (K68.3)retroperitoneal hemorrhage (K68.3)