K50.0Crohn's disease of small intestine

K50.0 is the ICD-10-CM diagnosis code for Crohn's disease of small intestine. It belongs to category K50 (Crohn's disease [regional enteritis]), block K50-K52 (noninfective enteritis and colitis) and chapter 11 (diseases of the digestive system). It is a header code, so it can't be reported by itself; one of its 2 subcodes must be used instead.

Within K50 (Crohn's disease [regional enteritis]), K50.0 is specifically for Crohn's disease of small intestine. Related codes cover disease of large intestine (K50.1), disease of both small and large intestine (K50.8) and disease, unspecified (K50.9).

To report this condition, pick the subcode that matches the documentation: K50.00 (without complications) and K50.01 (with complications).

Don't report K50.0 together with the conditions in its Excludes1 note: Crohn's disease of both small and large intestine (K50.8-).

Use an additional code to identify any associated fistulas, if applicable: anal fistula (K60.3-), anorectal fistula (K60.5-) and rectal fistula (K60.4-). Use an additional code to identify manifestations, such as: pyoderma gangrenosum (L88).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.