2026 ICD-10-CM Diagnosis Code K90Intestinal malabsorption

ICD-10-CM Codes›K00–K95›K90-K95›K90

ICD-10-CM K90
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

K90 is a non-billable ICD-10-CM category code for intestinal malabsorption, so it cannot be submitted on claims. Use a more specific code from this category instead, such as K90.0, K90.1, K90.2, and K90.3.

Code Identity

ICD-10-CM Code
K90
Billable Status
No — Non-Billable Category
Code Describes
Intestinal malabsorption
Chapter
K90-K95
Other diseases of the digestive system

Code Classification

ChapterK00–K95Diseases of the digestive system
SectionK90-K95Other diseases of the digestive system
CategoryK90Intestinal malabsorption
This CodeK90Intestinal malabsorption

Specific Coding for Intestinal malabsorptionOverview

Non-specific codes like K90 require more characters. Use one of these billable codes instead:

  • Use K90.0 for Celiac disease

  • Use K90.1 for Tropical sprue

  • Use K90.2 for Blind loop syndrome, not elsewhere classified

  • Use K90.3 for Pancreatic steatorrhea

  • K90.4 for Other malabsorption due to intolerance

  • Use K90.41 for Non-celiac gluten sensitivity

  • Use K90.49 for Malabsorption due to intolerance, not elsewhere classified

  • K90.8 for Other intestinal malabsorption

  • Use K90.81 for Whipple's disease

  • K90.82 for Short bowel syndrome

  • Use K90.83 for Intestinal failure

  • Use K90.89 for Other intestinal malabsorption

  • Use K90.9 for Intestinal malabsorption, unspecified

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Type 1 Excludes

  • intestinal malabsorption following gastrointestinal surgery K91.2

Patient EducationClinical

Malabsorption Syndromes

Your small intestine does most of the digesting of the foods you eat. If you have a malabsorption syndrome, your small intestine cannot absorb nutrients from foods.

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 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About K90Overview

Is K90 (Intestinal malabsorption) a billable code?

No. This is a category header that groups the codes for intestinal malabsorption, and headers cannot be submitted on claims. Claims for intestinal malabsorption need a more specific code from this category, such as K90.0, K90.1, and K90.2.