K66.1
ICD-10BillableHemoperitoneum
Official ICD-10-CM descriptor (FY2026)
Hemoperitoneum
K66.1 is valid for submission on a claim — CMS flags it as a billable, specific code.
Inclusion terms
- Peritoneal hematoma
- Peritoneal hemorrhage
Excludes1
Not coded here. An Excludes1 code should never be reported at the same time as the code above it.
- traumatic hemoperitoneum (S36.8-)
Excludes2
Not included here. The condition is not part of this code, but a patient may have both, and both codes may be reported together.
- retroperitoneal hematoma (K68.3)
- retroperitoneal hemorrhage (K68.3)
Related codes in K66
Where this code sits
- Parent code
- K66
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ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.