All ICD10 Codes

K50

Non-Billable
ChapterK00–K95
Rankcategory
Description

Crohn's disease [regional enteritis]

About ICD-10-CM code K50

K50 is the ICD-10-CM diagnosis code for Crohn's disease [regional enteritis]. It sits in K00-K95 Diseases of the Digestive System, within Noninfective enteritis and colitis (K50-K52). K50 is not billable on its own, coders must choose one of its more specific child codes instead.

Use a more specific code (0 billable, 4 non-billable)
K50.0Crohn's disease of small intestinehas subcodesK50.1Crohn's disease of large intestinehas subcodesK50.8Crohn's disease of both small and large intestinehas subcodesK50.9Crohn's disease, unspecifiedhas subcodes
Metadata & Insights
  • •Non-billable category (requires more specific sub-code).
  • •Chapter 11: Diseases of the Digestive System (K00-K95).

CH11 Parent Instructions

Excludes2(Not included here. Code separately if applicable.)
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

K50-K52 Parent Instructions

Includes
  • noninfective inflammatory bowel disease
Excludes1(Not coded here. Use a different code.)
  • irritable bowel syndrome (K58.-)
  • megacolon (K59.3-)

Instructional Notes

Includes
  • granulomatous enteritis
Excludes1(Not coded here. Use a different code.)
  • ulcerative colitis (K51.-)
Use Additional Code
  • code to identify any associated fistulas, if applicable:
  • anal fistula (K60.3-)
  • anorectal fistula (K60.5-)
  • rectal fistula (K60.4-)
  • code to identify manifestations, such as:
  • pyoderma gangrenosum (L88)

Clinical Hierarchy

BillableHas subcodes
CH11Diseases of the digestive system (K00-K95)
K50-K52Noninfective enteritis and colitis (K50-K52)
K50Crohn's disease [regional enteritis]Not billable
K50.0Crohn's disease of small intestineSubcodes
K50.1Crohn's disease of large intestineSubcodes
K50.8Crohn's disease of both small and large intestineSubcodes
K50.9Crohn's disease, unspecifiedSubcodes

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to K50:

blockK50-K52
Noninfective enteritis and colitis (K50-K52)
View context instructions
chapterCH11
Diseases of the digestive system (K00-K95)
View context instructions

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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