K63.2 Fistula of intestine

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

Excludes1 (never code together)

• fistula of duodenum (K31.6)
• fistula of intestine with Crohn's disease (K50.013, K50.113, K50.813, K50.913,)
• fistula of intestine with ulcerative colitis (K51.013, K51.213, K51.313, K51.413, K51.513, K51.813, K51.913)

Excludes2 (not included here)

• fistula of anal and rectal regions (K60.-)
• fistula of appendix (K38.3)
• intestinal-genital fistula, female (N82.2-N82.4)
• vesicointestinal fistula (N32.1)

Code also

• , if applicable, disruption of internal operation (surgical) wound (T81.32-)

MS-DRG index

Defines the logic of DRG(s) 393-395 in MDC 06.

Approximate ICD-9-CM (GEMs)

• 569.81 Fistula of intestine, excluding rectum and anus (approximate)

Diagnosis Index entries for K63.2

• Fistula (cutaneous) › abdomen (wall)
• Fistula (cutaneous) › abdomen (wall) › intestine NEC
• Fistula (cutaneous) › abdominorectal
• Fistula (cutaneous) › abdominosigmoidal
• Fistula (cutaneous) › cecosigmoidal
• Fistula (cutaneous) › cecum
• Fistula (cutaneous) › colon
• Fistula (cutaneous) › enterocolic
• Fistula (cutaneous) › enterocutaneous
• Fistula (cutaneous) › fecal
• Fistula (cutaneous) › ileorectal or ileosigmoidal
• Fistula (cutaneous) › ileum
• Fistula (cutaneous) › intestine NEC
• Fistula (cutaneous) › intestinocolonic (abdominal)
• Fistula (cutaneous) › jejunum
• Fistula (cutaneous) › pericecal
• Fistula (cutaneous) › perineosigmoidal
• Fistula (cutaneous) › rectosigmoid (intercommunicating)
• Fistula (cutaneous) › sigmoid
• Fistula (cutaneous) › stercoral

Nearby codes

• K63 Other diseases of intestine
• K63.0 Abscess of intestine
• K63.1 Perforation of intestine (nontraumatic)
• K63.2 Fistula of intestine (this code)
• K63.3 Ulcer of intestine
• K63.4 Enteroptosis
• K63.5 Polyp of colon
• K63.8 Other specified diseases of intestine
• K63.81 Dieulafoy lesion of intestine