ICD-10-CM 2027
ICD-10 code for regional of enteritis
K50.90
Crohn's disease, unspecified, without complications
✓ Billable / specificCC — complication/comorbidity
From the official ICD-10-CM alphabetic index entry “Enteritis (acute) (diarrheal) (hemorrhagic) (noninfective) › regional (of)”. Page updated September 29, 2026.
About coding regional of enteritis
The ICD-10-CM code for regional of enteritis is K50.90 (Crohn's disease, unspecified, without complications). The official index lists 34 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on K50.90.
Within K50.9, choose K50.90 (without complications) only when documentation doesn't support a more specific option: with complications (K50.91).
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).
As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.
More specific regional of enteritis codes (official index)
- with
- complication K50.919 — Crohn's disease, unspecified, with unspecified complications
- abscess K50.914 — Crohn's disease, unspecified, with abscess
- fistula K50.913 — Crohn's disease, unspecified, with fistula
- intestinal obstruction K50.912 — Crohn's disease, unspecified, with intestinal obstruction
- rectal bleeding K50.911 — Crohn's disease, unspecified, with rectal bleeding
- specified complication NEC K50.918 — Crohn's disease, unspecified, with other complication
- colon
- duodenum
- ileum
- jejunum
- large bowel
- large intestine (colon) (rectum) K50.10 — Crohn's disease of large intestine without complications
- with
- complication K50.119 — Crohn's disease of large intestine with unspecified complications
- abscess K50.114 — Crohn's disease of large intestine with abscess
- fistula K50.113 — Crohn's disease of large intestine with fistula
- intestinal obstruction K50.112 — Crohn's disease of large intestine with intestinal obstruction
- rectal bleeding K50.111 — Crohn's disease of large intestine with rectal bleeding
- small intestine (duodenum) (ileum) (jejunum) involvement K50.80 — Crohn's disease of both small and large intestine without complications
- with
- complication K50.819 — Crohn's disease of both small and large intestine with unspecified complications
- abscess K50.814 — Crohn's disease of both small and large intestine with abscess
- fistula K50.813 — Crohn's disease of both small and large intestine with fistula
- intestinal obstruction K50.812 — Crohn's disease of both small and large intestine with intestinal obstruction
- rectal bleeding K50.811 — Crohn's disease of both small and large intestine with rectal bleeding
- specified complication NEC K50.818 — Crohn's disease of both small and large intestine with other complication
- specified complication NEC K50.118 — Crohn's disease of large intestine with other complication
- rectum
- small intestine (duodenum) (ileum) (jejunum) K50.00 — Crohn's disease of small intestine without complications
- with
- complication K50.019 — Crohn's disease of small intestine with unspecified complications
- abscess K50.014 — Crohn's disease of small intestine with abscess
- fistula K50.013 — Crohn's disease of small intestine with fistula
- intestinal obstruction K50.012 — Crohn's disease of small intestine with intestinal obstruction
- large intestine (colon) (rectum) involvement K50.80 — Crohn's disease of both small and large intestine without complications
- with
- complication K50.819 — Crohn's disease of both small and large intestine with unspecified complications
- abscess K50.814 — Crohn's disease of both small and large intestine with abscess
- fistula K50.813 — Crohn's disease of both small and large intestine with fistula
- intestinal obstruction K50.812 — Crohn's disease of both small and large intestine with intestinal obstruction
- rectal bleeding K50.811 — Crohn's disease of both small and large intestine with rectal bleeding
- specified complication NEC K50.818 — Crohn's disease of both small and large intestine with other complication
- rectal bleeding K50.011 — Crohn's disease of small intestine with rectal bleeding
- specified complication NEC K50.018 — Crohn's disease of small intestine with other complication
Common questions about regional of enteritis ICD-10 codes
What is the ICD-10 code for regional of enteritis?
- K50.90 — Crohn's disease, unspecified, without complications. More specific codes apply when the documentation supports them: K50.919, K50.914, K50.913, K50.912 and others below.
What is the ICD-10 code for large intestine regional of enteritis?
- K50.10 — Crohn's disease of large intestine without complications.
What is the ICD-10 code for small intestine regional of enteritis?
- K50.00 — Crohn's disease of small intestine without complications.
Is K50.90 billable?
- Yes. K50.90 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can K50.90 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict K50.90 as a principal diagnosis.
Is K50.90 a CC or MCC?
- K50.90 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.