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K66.1

✓ Billable

Hemoperitoneum

Diseases of the digestive system (K00-K95)

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Also Known As

Peritoneal hematomaPeritoneal hemorrhage

❌ Excludes1

direct

Cannot be coded with K66.1

  • • traumatic hemoperitoneum (S36.8-)

⚠️ Excludes2

direct

May be coded together if both conditions coexist

  • • retroperitoneal hematoma (K68.3)
  • • retroperitoneal hemorrhage (K68.3)

⚠️ Excludes2

inherited from K66

Rules from parent category K66: Other disorders of peritoneum

  • • ascites (R18.-)
  • • peritoneal effusion (chronic) (R18.8)

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Code Information

CodeK66.1
BillableYes
ParentK66
CategoryDiseases of the digestive system (K00-K95)
Excludes11 rule(s)
Excludes24 note(s)

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)