2027 ICD-10-CM Diagnosis Code K50Crohn's disease [regional enteritis]

ICD-10-CM Codes›K00–K95›K50-K52›K50

ICD-10-CM K50
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

K50 is a non-billable ICD-10-CM category code for Crohn's disease [regional enteritis], so it cannot be submitted on claims. Use a more specific code from this category instead, such as K50.00, K50.011, K50.012, and K50.013.

Code Identity

ICD-10-CM Code
K50
Billable Status
No — Non-Billable Category
Code Describes
Crohn's disease [regional enteritis]
Short Description
Crohn's disease [regional enteritis]
Same as the full description in the CMS dataset.
Chapter
K50-K52
Noninfective enteritis and colitis

Code Classification

ChapterK00–K95Diseases of the digestive system
SectionK50-K52Noninfective enteritis and colitis
CategoryK50Crohn's disease [regional enteritis]
This CodeK50Crohn's disease [regional enteritis]

Specific Coding for Crohn's disease [regional enteritis]Overview

Non-specific codes like K50 require more characters. Use one of these billable codes instead:

  • K50.0 for Crohn's disease of small intestine

  • Use K50.00 for Crohn's disease of small intestine without complications

  • K50.01 for Crohn's disease of small intestine with complications

  • K50.1 for Crohn's disease of large intestine

  • Use K50.10 for Crohn's disease of large intestine without complications

  • K50.11 for Crohn's disease of large intestine with complications

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

  • Use K50.80 for Crohn's disease of both small and large intestine without complications

  • K50.81 for Crohn's disease of both small and large intestine with complications

  • K50.9 for Crohn's disease, unspecified

  • Use K50.90 for Crohn's disease, unspecified, without complications

  • K50.91 for Crohn's disease, unspecified, with complications

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to K50: its own notes plus those printed at block K50-K52 and Chapter 11. A note printed at a category, block or chapter applies to every code under it.

Includes

Further defines, or gives examples of, the content of the category.

On K50 itself
  • granulomatous enteritis
From Block K50-K52 Noninfective enteritis and colitis applies to 91 codes
  • noninfective inflammatory bowel disease

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

On K50 itself
  • ulcerative colitis (K51.-)
From Block K50-K52 Noninfective enteritis and colitis applies to 91 codes

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From Chapter 11 (K00-K95) Diseases of the digestive system applies to 863 codes
  • 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)

Use Additional Code

Add a second code, after this one, to fully describe the condition.

  • 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)

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name K50, its category, or a range that includes it.

Excludes1 2

These codes carry an Excludes1 note naming K50: they are not reported together with it, unless the two conditions are unrelated.

  • E55.0 Rickets, active
    Crohn's rickets (K50.-)
  • K51 Ulcerative colitis
    Crohn's disease [regional enteritis] (K50.-)

Excludes2 1

These codes carry an Excludes2 note naming K50: its condition is not part of those codes, and both may be reported when the patient has both.

  • M04 Autoinflammatory syndromes
    Crohn's disease (K50.-)

Code First 3

These codes say to code first a condition named in the note, and K50 is one of the conditions named.

Code Also 2

These codes say K50 may also be needed to fully describe the condition. The note gives no sequencing direction.

  • M07 Enteropathic arthropathies
    regional enteritis [Crohn's disease] (K50.-)
  • M08 Juvenile arthritis
    regional enteritis [Crohn's disease] (K50.-)

Patient EducationClinical

Crohn's Disease

Crohn's disease is a chronic (long-lasting) disease that causes inflammation in your digestive tract. It can affect any part of your digestive tract, which runs from your mouth to your anus. But it usually affects your small intestine and the beginning of your large intestine.

The full article covers:

  • What is Crohn's disease?
  • What causes Crohn's disease?
  • Who is more likely to develop Crohn's disease?
  • What are the symptoms of Crohn's disease?
  • What other problems can Crohn's disease cause?
  • How is Crohn's disease diagnosed?
  • What are the treatments for Crohn's disease?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About K50Overview

What is the ICD-10 code for Crohn's disease [regional enteritis]?

K50 is the ICD-10-CM category for Crohn's disease [regional enteritis], but it is a non-billable header: claims need a more specific code from this category, listed on this page.

Is K50 (Crohn's disease [regional enteritis]) a billable code?

No. This is a category header that groups the codes for Crohn's disease [regional enteritis], and headers cannot be submitted on claims. Claims for Crohn's disease [regional enteritis] need a more specific code from this category, such as K50.00, K50.011, and K50.012.

Can K50 be reported with a code from K51?

Not as a rule. The Excludes1 note on K50 lists "ulcerative colitis (K51.-)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).

Does K50 need an additional code?

When the condition applies, yes. The Use Additional Code note reads: 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). The additional code is reported after K50.