ICD-10 Code K50.10 – Crohn’s disease of large intestine without complications (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K50.10 – Crohn’s disease of large intestine without complications
What it is
K50.10 identifies Crohn’s disease limited to the large intestine, without documented complications. Use it when the record supports Crohn’s colitis and does not describe fistula, abscess, obstruction, or other complications.
Clinical signs
Typical findings include chronic inflammatory bowel disease symptoms such as abdominal pain, diarrhea, rectal bleeding, and weight loss. Clinical features vary; refer to documentation for confirmed colonic involvement and absence of complications.
When to use this code
Use this code when the provider documents Crohn’s disease of the colon or large intestine and specifies no complications. It also fits follow-up visits for known Crohn’s colitis when the encounter does not mention a flare complication or a different site. If the note is vague, check documentation before assigning K50.10.
Do not use for
Do not use K50.10 if the disease is documented in the small intestine, both small and large intestine, or an unspecified intestinal site. Do not use it when complications are recorded; code the documented complication instead.
Coding tip
Confirm both the anatomic site and the absence of complications in the provider note before coding.