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K55.9

✓ Billable

Vascular disorder of intestine, unspecified

Diseases of the digestive system (K00-K95)

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Also Known As

Ischemic colitisIschemic enteritisIschemic enterocolitis

❌ Excludes1

inherited from K55

Rules from parent category K55: Vascular disorders of intestine

  • • necrotizing enterocolitis of newborn (P77.-)

⚠️ Excludes2

inherited from K55

Rules from parent category K55: Vascular disorders of intestine

  • • angioectasia (angiodysplasia) duodenum (K31.81-)

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Code Information

CodeK55.9
BillableYes
ParentK55
CategoryDiseases of the digestive system (K00-K95)
Excludes11 rule(s)
Excludes21 note(s)

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)