ICD-10 Code K50.113 – Crohn’s Disease of Large Intestine with Fistula (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K50.113 – Crohn’s disease of large intestine with fistula
What it is
K50.113 identifies Crohn’s disease affecting the large intestine when a fistula is documented. It means chronic inflammatory bowel disease with an abnormal passage connecting the colon to another organ or skin.
Clinical signs
Clinical features vary; refer to documentation. Commonly recorded findings include colonic Crohn’s inflammation plus a fistula, such as an enteric, perianal, or cutaneous tract confirmed by exam, imaging, or operative note.
When to use this code
Use this code when the provider documents Crohn’s disease of the large intestine and specifically notes a fistula. The fistula must be part of the diagnosis, not only a suspected complication. If the record does not clearly identify large-intestine involvement, check documentation.
Do not use for
Do not use this code for Crohn’s disease without fistula, or for fistulas unrelated to Crohn’s disease. If the site is small intestine only, or the bowel location is not specified, choose the more accurate documented code.
Coding tip
Verify both the anatomic site and the fistula in the same record; if either element is missing, query the provider.