ICD10BillableValid for clinical use
ICD-10 Code K63.2: Fistula of intestine
Reviewed by HealthAssure Clinical TeamUpdated 26 May 2026
What is this code?
ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Diseases of the digestive system (K00-K95).
When is it used?
- May be used when a clinician documents fistula of intestine in a patient's medical record.
- May appear in hospital records, claims, referrals, and clinical documentation.
- This code can be used as a clinically usable diagnosis entry in standardized coding workflows.
What it does not mean
- A code alone does not explain severity, treatment plan, or outcome.
- A medical code should not be treated as a substitute for a doctor's diagnosis or advice.
Code hierarchy
chapter
11Diseases of the digestive system (K00-K95)
block
K55-K64Other diseases of intestines
category
K63Other diseases of intestine
currentK63
Official coding notes
Excludes1 (do not 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 (may code together if documented)
- 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-)
Where you may see this code
You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records.
Related specialists
GastroenterologistGeneral Physician
Related codes
Sibling codes
Coverage-related procedures and services
CPT 44388high
COLONOSCOPY THROUGH STOMA; DIAGNOSTIC, INCLUDING COLLECTION OF SPECIMEN(S) BY BRUSHING OR WASHING, WHEN PERFORMED (SEPARATE PROCEDURE)
Source: CMS coverage guidance
CPT 44401high
COLONOSCOPY THROUGH STOMA; WITH ABLATION OF TUMOR(S), POLYP(S), OR OTHER LESION(S) (INCLUDES PRE-AND POST-DILATION AND GUIDE WIRE PASSAGE, WHEN PERFORMED)
Source: CMS coverage guidance
CPT 44389high
COLONOSCOPY THROUGH STOMA; WITH BIOPSY, SINGLE OR MULTIPLE
Source: CMS coverage guidance
CPT 44391high
COLONOSCOPY THROUGH STOMA; WITH CONTROL OF BLEEDING, ANY METHOD
Source: CMS coverage guidance
CPT 44402high
COLONOSCOPY THROUGH STOMA; WITH ENDOSCOPIC STENT PLACEMENT (INCLUDING PRE- AND POST-DILATION AND GUIDE WIRE PASSAGE, WHEN PERFORMED)
Source: CMS coverage guidance
CPT 44390high
COLONOSCOPY THROUGH STOMA; WITH REMOVAL OF FOREIGN BODY(S)
Source: CMS coverage guidance
Mapped diagnoses and classifications
SNOMED_CT 197263009high
Abdominal wall fistula
Source: SNOMED International ICD-10 map
SNOMED_CT 235779007high
Colocolic fistula
Source: SNOMED International ICD-10 map
SNOMED_CT 197250003high
Colonic fistula
Source: SNOMED International ICD-10 map
SNOMED_CT 405565000high
Colovascular fistula
Source: SNOMED International ICD-10 map
SNOMED_CT 111356006high
Enterocolic fistula
Source: SNOMED International ICD-10 map
SNOMED_CT 197247001high
Enterocutaneous fistula
Source: SNOMED International ICD-10 map
Coding guidelines
Compatibility
Legacy and official ICD code match exactly.
Legacy codes
K63.2
Common synonyms
Fistula of intestine
Frequently asked questions
About this content
This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.