K55.21 Angiodysplasia of colon with hemorrhage

Billable ICD-10-CM code, FY2026. Acts as a Major Complication or Comorbidity (MCC) as a secondary diagnosis.

Applies from K55 Vascular disorders of intestine

Excludes1 (never code together)

• necrotizing enterocolitis of newborn (P77.-)

Excludes2 (not included here)

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

MS-DRG index

Defines the logic of DRG(s) 377-379 in MDC 06.

Approximate ICD-9-CM (GEMs)

• 569.85 Angiodysplasia of intestine with hemorrhage

Diagnosis Index entries for K55.21

• Angiodysplasia (cecum) (colon) › with bleeding

Nearby codes

• 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 (this code)
• 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