K57.91 Diverticulosis of intestine, part unspecified, without perforation or abscess with bleeding

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

Applies from K57 Diverticular disease of intestine

Excludes1 (never code together)

• congenital diverticulum of intestine (Q43.8)
• Meckel's diverticulum (Q43.0)

Excludes2 (not included here)

• diverticulum of appendix (K38.2)

Code also

• if applicable peritonitis K65.-

MS-DRG index

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

Approximate ICD-9-CM (GEMs)

• 562.12 Diverticulosis of colon with hemorrhage (approximate)

Code annotations containing back-references to K57.91

Back-references to K57

• Code Also: K65 Peritonitis ("if applicable diverticular disease of intestine (K57.-)")
• Type 1 Excludes: K92.2 Gastrointestinal hemorrhage, unspecified ("diverticular disease with hemorrhage (K57.-)")

Diagnosis Index entries for K57.91

• Diverticulosis › with bleeding

Nearby codes

• K57.8 Diverticulitis of intestine, part unspecified, with perforation and abscess
• K57.80 Diverticulitis of intestine, part unspecified, with perforation and abscess without bleeding
• K57.81 Diverticulitis of intestine, part unspecified, with perforation and abscess with bleeding
• K57.9 Diverticular disease of intestine, part unspecified, without perforation or abscess
• K57.90 Diverticulosis of intestine, part unspecified, without perforation or abscess without bleeding
• K57.91 Diverticulosis of intestine, part unspecified, without perforation or abscess with bleeding (this code)
• K57.92 Diverticulitis of intestine, part unspecified, without perforation or abscess without bleeding
• K57.93 Diverticulitis of intestine, part unspecified, without perforation or abscess with bleeding