ICD10BillableValid for clinical use
ICD-10 Code K50.813: Crohn's disease of both small and large intestine with fistula
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 crohn's disease of both small and large intestine with fistula 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
K50-K52Noninfective enteritis and colitis
category
K50Crohn's disease [regional enteritis]
category
K50.8Crohn's disease of both small and large intestine
category
K50.81Crohn's disease of both small and large intestine with complications
currentK50.81
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
K50.811Crohn's disease of both small and large intestine with rectal bleedingcodeK50.812Crohn's disease of both small and large intestine with intestinal obstructioncodeK50.814Crohn's disease of both small and large intestine with abscesscodeK50.818Crohn's disease of both small and large intestine with other complicationcodeK50.819Crohn's disease of both small and large intestine with unspecified complicationscode
Sibling codes
K50.811Crohn's disease of both small and large intestine with rectal bleedingbillableK50.812Crohn's disease of both small and large intestine with intestinal obstructionbillableK50.814Crohn's disease of both small and large intestine with abscessbillableK50.818Crohn's disease of both small and large intestine with other complicationbillableK50.819Crohn's disease of both small and large intestine with unspecified complicationsbillable
Coverage-related procedures and services
CPT 82306high
VITAMIN D; 25 HYDROXY, INCLUDES FRACTION(S), IF PERFORMED
Source: CMS coverage guidance
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
Coding guidelines
Common synonyms
Crohn's disease of both small and large intestine with fistula
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.