K63.2 is the authoritative medical code for Fistula of intestine. This classification is used in medical billing and clinical recording to specify the clinical criteria for fistula of intestine (ICD-10-CM K63.2), ensuring healthcare documentation aligns with 2026 federal coding standards.
Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.
Official Registry Overview & Definition
Fistula of intestine is a billable ICD-10-CM diagnosis code K63.2. Excludes1 (not coded here): 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-.
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for K63.2 in the official ICD-10-CM tabular list.
Excludes1 — Not Coded Here
Conditions that can never be reported with this code; the two are mutually exclusive.
- 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
Conditions not covered by this code, but which may be reported alongside it when both are present.
- 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
Additional codes that may be required to fully describe the encounter.
- , if applicable, disruption of internal operation surgical wound T81.32-
Frequently Asked Questions (FAQ) & Clinical Guidance
What can't be coded together with K63.2?
Per Excludes1 instructions, K63.2 must not be reported with: 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).
Can K63.2 be reported alongside related conditions?
Per Excludes2 instructions, K63.2 and the following may both be reported when both are present: fistula of anal and rectal regions (K60.-); fistula of appendix (K38.3); intestinal-genital fistula, female (N82.2-N82.4); vesicointestinal fistula (N32.1).
Codes in This Family (17)
Official ICD-10-CM classifications in the same code family as K63.2, with their registry titles.
- K63 — Other diseases of intestine
- K63.0 — Abscess of intestine
- K63.1 — Perforation of intestine (nontraumatic)
- 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
- K63.82 — Intestinal microbial overgrowth
- K63.821 — Small intestinal bacterial overgrowth
- K63.8211 — Small intestinal bacterial overgrowth, hydrogen-subtype
- K63.8212 — Small intestinal bacterial overgrowth, hydrogen sulfide-subtype
- K63.8219 — Small intestinal bacterial overgrowth, unspecified
- K63.822 — Small intestinal fungal overgrowth
- K63.829 — Intestinal methanogen overgrowth, unspecified
- K63.89 — Other specified diseases of intestine
- K63.9 — Disease of intestine, unspecified
Indexed Clinical Terms (20)
Clinical term phrases from the official ICD-10-CM Index to Diseases and Injuries that map to this code.
- 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
Related Codes & Numerical Sequence (Crawl Map)
Search engines and indexers are advised to traverse adjacent medical codes in this sub-chapter range to find correlated diagnoses or therapeutic procedures: