2026 ICD-10-CM Diagnosis Code K52.89Other specified noninfective gastroenteritis and colitis

ICD-10-CM Codes›K00–K95›K50-K52›K52

ICD-10-CM K52.89
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

K52.89 is a billable ICD-10-CM diagnosis code for other specified noninfective gastroenteritis and colitis. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 391 through 392. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Noninfectious gastroenteritis.

Code Identity

ICD-10-CM Code
K52.89
Billable Status
Yes — Valid for Submission
Code Describes
Other specified noninfective gastroenteritis and colitis
Short Description
Other specified noninfective gastroenteritis and colitis
Same as the full description in the CMS dataset.
Parent Code
K52.8
Other specified noninfective gastroenteritis and colitis

Code Classification

ChapterK00–K95Diseases of the digestive system
SectionK50-K52Noninfective enteritis and colitis
CategoryK52Other and unspecified noninfective gastroenteritis and colitis
This CodeK52.89Other specified noninfective gastroenteritis and colitis

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • ALPI-related inflammatory bowel disease
  • Autoimmune leukopenia
  • Behçet disease of small intestine
  • Behcet's colitis
  • Behcet's syndrome, intestinal type
  • Chronic diarrhea of infants AND/OR young children
  • Chronic infantile diarrhea due to guanylate cyclase 2C overactivity
  • Chronic inflammatory small bowel disease
  • Chronic proliferative enteritis of intestine
  • Colitis cystica profunda
  • Colitis due to IgA vasculitis
  • Congenital chronic diarrhea with protein-losing enteropathy
  • Congenital secretory diarrhea
  • Congenital secretory diarrhea, sodium type
  • Cutaneous photosensitivity and lethal colitis syndrome
  • Disorder of gastrointestinal tract co-occurrent with human immunodeficiency virus infection
  • Enteritis of small intestine caused by foreign body
  • Enteritis of small intestine due to trauma
  • Fibrinous enteritis of intestine
  • Granulomatous enteritis, non-Crohn's disease
  • Immune dysregulation, inflammatory bowel disease, arthritis, recurrent infection, lymphopenia syndrome
  • Infantile inflammatory bowel disease with neurological involvement
  • Lymphocyte count below reference range
  • Lymphocytopenia
  • Neutropaenic enterocolitis
  • Neutropenic colitis
  • Non-Crohn's granulomatous colitis
  • Noninfectious gastroenteritis with AIDS
  • Phlegmonous colitis
  • Phlegmonous enteritis of gastrointestinal tract
  • Postprandial diarrhea
  • Protein-losing enteropathy
  • Secretory diarrhea
  • Stercoral colitis
  • Syndromic congenital sodium diarrhea
  • TRIM22-related inflammatory bowel disease
  • Typhlitis
  • Typhlocolitis
  • Ulcerative gastrointestinal mucositis
  • Uremic colitis

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Colitis(acute) (catarrhal) (chronic) (noninfective) (hemorrhagic)
      • cystica superficialis
    • Colitis(acute) (catarrhal) (chronic) (noninfective) (hemorrhagic)
      • noninfective
        • specified NEC
    • Diarrhea, diarrheal(disease) (infantile) (inflammatory)
      • cachectic NEC
    • Gastroenteritis(acute) (chronic) (noninfectious)
      • noninfectious
        • specified NEC

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR DIG022
Noninfectious gastroenteritis
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Typhlitis

    necrotizing inflammation of the cecum (typhlon in greek), sometimes spreading to the appendix and/or the ileum. symptoms include abdominal pain and diarrhea. its pathogenesis is multifactorial. typhlitis is often associated with neutropenia and chemotherapy in immunocompromised individuals (immunocompromised host).

Patient EducationClinical

Digestive Diseases

When you eat, your body breaks food down to a form it can use to build and nourish cells and provide energy. This process is called digestion.

Read the full article at MedlinePlus

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

Convert K52.89 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
558.9 Noninf gastroenterit NEC
Approximate The match is approximate rather than exact.
ICD-9-CM
787.91 Diarrhea
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About K52.89Overview

Is K52.89 (Other specified noninfective gastroenteritis and colitis) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report other specified noninfective gastroenteritis and colitis on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does K52.89 group to?

When other specified noninfective gastroenteritis and colitis is the principal diagnosis on an inpatient stay, it groups to MS-DRG 391, 392, with relative weights from 0.7796 to 1.2683 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of K52.89?

Under the General Equivalence Mappings, other specified noninfective gastroenteritis and colitis converts to ICD-9-CM 558.9 (noninf gastroenterit NEC) and 787.91 (diarrhea). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.