ICD-10-CM K55: Vascular disorders of intestine

ICD-10-CM Diagnosis Code (2025)

Official Description for K55

Vascular disorders of intestine

Coding Notes & Guidelines for K55

Excludes1: Not Coded Here

necrotizing enterocolitis of newborn (P77.-)

Excludes1: Not Coded Here

necrotizing enterocolitis of newborn (P77.-)

Excludes2: Not Included Here

angioectasia (angiodysplasia) duodenum (K31.81-)

Excludes2: Not Included Here

necrotizing enterocolitis due to Clostridium difficile (A04.7-)

Inclusion Terms
  • Infarction of appendices epiploicae
  • Mesenteric (artery) (vein) embolism
  • Mesenteric (artery) (vein) infarction
  • Mesenteric (artery) (vein) thrombosis
Inclusion Terms
  • Gangrene of small intestine
  • Necrosis of small intestine
Inclusion Terms
  • Acute fulminant ischemic colitis
  • Subacute ischemic colitis
Inclusion Terms
  • Gangrene of large intestine
  • Necrosis of large intestine
Inclusion Terms
  • Acute intestinal infarction
  • Gangrene of intestine
  • Necrosis of intestine
Inclusion Terms
  • Chronic ischemic colitis
  • Chronic ischemic enteritis
  • Chronic ischemic enterocolitis
  • Ischemic stricture of intestine
  • Mesenteric atherosclerosis
  • Mesenteric vascular insufficiency
Inclusion Terms

Necrotizing enterocolitis, NOS

Inclusion Terms

Necrotizing enterocolitis without pneumatosis, without perforation

Inclusion Terms

Necrotizing enterocolitis with pneumatosis, without perforation

Inclusion Terms
  • Necrotizing enterocolitis with perforation
  • Necrotizing enterocolitis with pneumatosis and perforation
Inclusion Terms
  • Ischemic colitis
  • Ischemic enteritis
  • Ischemic enterocolitis

Child Codes (More Specific Codes for K55):

K55.0 - Acute vascular disorders of intestine K55.01 - Acute (reversible) ischemia of small intestine K55.011 - Focal (segmental) acute (reversible) ischemia of small intestine K55.012 - Diffuse acute (reversible) ischemia of small intestine K55.019 - Acute (reversible) ischemia of small intestine, extent unspecified K55.02 - Acute infarction of small intestine K55.021 - Focal (segmental) acute infarction of small intestine K55.022 - Diffuse acute infarction of small intestine K55.029 - Acute infarction of small intestine, extent unspecified K55.03 - Acute (reversible) ischemia of large intestine K55.031 - Focal (segmental) acute (reversible) ischemia of large intestine K55.032 - Diffuse acute (reversible) ischemia of large intestine K55.039 - Acute (reversible) ischemia of large intestine, extent unspecified K55.04 - Acute infarction of large intestine K55.041 - Focal (segmental) acute infarction of large intestine K55.042 - Diffuse acute infarction of large intestine K55.049 - Acute infarction of large intestine, extent unspecified K55.05 - Acute (reversible) ischemia of intestine, part unspecified K55.051 - Focal (segmental) acute (reversible) ischemia of intestine, part unspecified K55.052 - Diffuse acute (reversible) ischemia of intestine, part unspecified K55.059 - Acute (reversible) ischemia of intestine, part and extent unspecified K55.06 - Acute infarction of intestine, part unspecified K55.061 - Focal (segmental) acute infarction of intestine, part unspecified K55.062 - Diffuse acute infarction of intestine, part unspecified K55.069 - Acute infarction of intestine, part and extent unspecified K55.1 - Chronic vascular disorders of intestine K55.2 - Angiodysplasia of colon K55.20 - Angiodysplasia of colon without hemorrhage K55.21 - Angiodysplasia of colon with hemorrhage K55.3 - Necrotizing enterocolitis K55.30 - Necrotizing enterocolitis, unspecified K55.31 - Stage 1 necrotizing enterocolitis K55.32 - Stage 2 necrotizing enterocolitis K55.33 - Stage 3 necrotizing enterocolitis K55.8 - Other vascular disorders of intestine K55.9 - Vascular disorder of intestine, unspecified

About ICD-10-CM Code K55 (Vascular disorders of intestine)

ICD-10-CM code K55 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM K55 became effective on October 1, 2024.

This page provides detailed information about K55 - Vascular disorders of intestine. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Vascular disorders of intestine.