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K50.113

K50.113: Crohn's disease of large intestine with fistula

Billable / specific codeICD-10-CM

K50.113 is a billable, specific ICD-10-CM code for crohn's disease of large intestine with fistula. It is valid for submission on a claim.

Check K50.113 with the rest of the claim: free scrubber

Excludes1 inherited from the categories above K50.113

A category’s note binds every code beneath it.

Written on K50.1: Crohn's disease of large intestine

  • Crohn's disease of both small and large intestine (K50.8)

Written on K50: Crohn's disease [regional enteritis]

  • ulcerative colitis (K51.-)

Other codes that can never be billed with K50.113

Their own Excludes1 notes name this code, so the conflict is not listed above.

  • E55.0Rickets, active
  • K51Ulcerative colitis
  • K63.2Fistula of intestine

Risk adjustment

K50.113 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:

  • HCC 80 Crohn's Disease (Regional Enteritis)0.550 RAF

Coefficient shown for the Community Non-dual Aged segment. A higher HCC in the same hierarchy will suppress this one, so capturing it does not always add score. Look up the whole chart to see which of its HCCs the hierarchy would zero.

Medicare coverage

K50.113 is named in 31 Medicare coverage policies: 31 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

  • A52423Billing and Coding: Infliximab and biosimilars
  • A53057Billing and Coding: Home Health Occupational Therapy
  • A55937Billing and Coding: Diagnostic Colonoscopy
  • A56394Billing and Coding: Colonoscopy and Sigmoidoscopy-Diagnostic

Alphabetic index entries that lead here

  • Enteritis›regional›large intestine›with›complication›fistula

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under K50.11

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.